US20070290383A1 - Method for producing a lens mold - Google Patents
Method for producing a lens mold Download PDFInfo
- Publication number
- US20070290383A1 US20070290383A1 US11/894,569 US89456907A US2007290383A1 US 20070290383 A1 US20070290383 A1 US 20070290383A1 US 89456907 A US89456907 A US 89456907A US 2007290383 A1 US2007290383 A1 US 2007290383A1
- Authority
- US
- United States
- Prior art keywords
- micro
- lenses
- lens mold
- silicone
- semiconductor chips
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Images
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B3/00—Simple or compound lenses
- G02B3/0006—Arrays
- G02B3/0012—Arrays characterised by the manufacturing method
- G02B3/0031—Replication or moulding, e.g. hot embossing, UV-casting, injection moulding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D11/00—Producing optical elements, e.g. lenses or prisms
- B29D11/00009—Production of simple or compound lenses
- B29D11/00278—Lenticular sheets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D11/00—Producing optical elements, e.g. lenses or prisms
- B29D11/00009—Production of simple or compound lenses
- B29D11/00365—Production of microlenses
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V5/00—Refractors for light sources
- F21V5/04—Refractors for light sources of lens shape
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B3/00—Simple or compound lenses
- G02B3/0006—Arrays
- G02B3/0037—Arrays characterized by the distribution or form of lenses
- G02B3/0056—Arrays characterized by the distribution or form of lenses arranged along two different directions in a plane, e.g. honeycomb arrangement of lenses
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L25/00—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof
- H01L25/03—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes
- H01L25/04—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers
- H01L25/075—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group H01L33/00
- H01L25/0753—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group H01L33/00 the devices being arranged next to each other
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L2224/42—Wire connectors; Manufacturing methods related thereto
- H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
- H01L2224/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
- H01L2224/4805—Shape
- H01L2224/4809—Loop shape
- H01L2224/48091—Arched
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L2224/42—Wire connectors; Manufacturing methods related thereto
- H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
- H01L2224/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
- H01L2224/481—Disposition
- H01L2224/48151—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive
- H01L2224/48221—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked
- H01L2224/48225—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked the item being non-metallic, e.g. insulating substrate with or without metallisation
- H01L2224/48227—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked the item being non-metallic, e.g. insulating substrate with or without metallisation connecting the wire to a bond pad of the item
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L2224/42—Wire connectors; Manufacturing methods related thereto
- H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
- H01L2224/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
- H01L2224/484—Connecting portions
- H01L2224/48463—Connecting portions the connecting portion on the bonding area of the semiconductor or solid-state body being a ball bond
- H01L2224/48465—Connecting portions the connecting portion on the bonding area of the semiconductor or solid-state body being a ball bond the other connecting portion not on the bonding area being a wedge bond, i.e. ball-to-wedge, regular stitch
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/01—Chemical elements
- H01L2924/01019—Potassium [K]
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/10—Details of semiconductor or other solid state devices to be connected
- H01L2924/11—Device type
- H01L2924/12—Passive devices, e.g. 2 terminal devices
- H01L2924/1204—Optical Diode
- H01L2924/12041—LED
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/15—Details of package parts other than the semiconductor or other solid state devices to be connected
- H01L2924/181—Encapsulation
- H01L2924/1815—Shape
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/19—Details of hybrid assemblies other than the semiconductor or other solid state devices to be connected
- H01L2924/1901—Structure
- H01L2924/1904—Component type
- H01L2924/19041—Component type being a capacitor
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/19—Details of hybrid assemblies other than the semiconductor or other solid state devices to be connected
- H01L2924/191—Disposition
- H01L2924/19101—Disposition of discrete passive components
- H01L2924/19107—Disposition of discrete passive components off-chip wires
Definitions
- the invention relates to a method for producing a lens mold suitable for manufacturing a field of micro-lenses.
- Radiation sources such as light-emitting diodes, generally have a semiconductor chip cast integrally with a transparent lens body. It is also known for the radiation output of such radiation sources to be increased by the provision of many semiconductor chips. Such radiation sources typically have a condenser optical element, which comprises a lens. However, the radiation density of such radiation sources is often unsatisfactory if it is critically important to create a highly luminous radiation source with little three-dimensional spread.
- a field of lenses forming a hexagonal lattice, which is disposed upstream, in the projection direction, of the semiconductor chips. Because of the hexagonal arrangement of the lenses, a high density of the associated semiconductor chips per unit of surface area can be attained. Since the lenses are typically formed by sphere segments, it is possible to use sphere segments with large radii for the lenses. As a result, the radiation-emitting active layer of the semiconductor chips can to a great extent be located inside the Weierstrass sphere (see Sze, Physics & Semiconductor Devices, 2nd ed., Page 694 which is incorporated herein by reference) associated with the respective sphere. This leads to a high radiation yield for the individual semiconductor chips.
- the lens mold is molded from a sheaf of closely-packed balls held by a hexagonal mounting.
- FIG. 1 a plan view on a printed circuit board, equipped with semiconductor chips and already bonded, for the radiation source of the invention
- FIG. 2 an enlarged cross-sectional view of the printed circuit board taken along line I-I of FIG. 1 above which micro-lenses have been placed;
- FIG. 3 a plan view on a field of lenses
- FIG. 4 a cross section through an apparatus that can be used to produce a casting mold for fabricating a field of micro-lenses
- FIG. 5 a plan view of the apparatus of FIG. 4 ;
- FIG. 6 a cross section through a further apparatus that can be used to produce the casting mold
- FIG. 7 a cross section through the casting apparatus used to produce the field of micro-lenses.
- FIG. 8 a graph that shows the radiation output as a function of the spacing between the upper edge of the semiconductor chip and the associated hemispherical micro-lens.
- FIG. 1 shows a plan view on a printed circuit board 1 , which is made from Al 2 O 3 or Si. Embodied on the printed circuit board 1 are terminal contacts 2 , from which conductor tracks 3 lead to contact points 4 , to which bond wires 5 are attached that lead to, among other things, chip contact faces 6 . Semiconductor chips 7 are mounted on the chip contact faces 6 and are bonded in series line by line.
- FIG. 2 shows an enlarged detail of a cross section through the printed circuit board 1 provided with micro-lenses 8 . It can be seen that the semiconductor chips 7 are each mounted with an underside 9 on the chip contact faces 6 . The bond wires 5 are each mounted on a top side 10 of the semiconductor chips 7 and lead to an adjacent chip contact face or to one of the contact points 4 .
- the micro-lenses 8 are half spheres with a radius R.
- the geometric center point of the micro-lenses 8 is located at a spacing ⁇ x from the top side of the semiconductor chips 7 .
- the spacing ⁇ x is selected such that at least half of the radiation-emitting active layer of each of the semiconductor chips 7 is located inside the Weierstrass sphere of radius R/n, where n is the index of refraction of the material used for the micro-lens 8 .
- the centers of the Weierstrass spheres coincide with the centers of the micro-lenses 8 . Radiation generated inside the Weierstrass sphere can exit the micro-lens 8 .
- micro-lenses 8 it is therefore advantageous if as large as possible a portion of the active layers of the semiconductor chips 7 come to be located inside the Weierstrass sphere. It is therefore important to select as large as possible a radius of the micro-lenses 8 . Conversely, in that case the spacing between semiconductor chips 7 must also be selected as correspondingly great. However, a great spacing between the semiconductor chips 7 means a low radiation density. The attempt is therefore made to keep the spacing between the micro-lenses 8 as slight as possible.
- the arrangement of micro-lenses 8 shown in FIG. 3 in a hexagonal lattice structure is the tightest possible arrangement of micro-lenses 8 and makes it possible to attain a high radiation output with at the same time a high radiation density.
- micro-lenses 8 are expediently cast from synthetic resin.
- the production method is performed as follows:
- a first mold plate 11 is produced, which as shown in FIG. 4 has a central arbor 12 with a hexagonal cross section that can be seen in FIG. 5 .
- the arbor 12 is disposed on a base 13 .
- Alignment pins 14 are located in the vicinity of the base 13 .
- a holder frame 15 is also mounted on the first mold plate 11 and has indentations 16 on its inside.
- the interior defined by the holder frame 15 is filled with silicone.
- a silicone frame 17 is thus formed, which in its center has an opening of hexagonal cross section. The silicone frame 17 engages the indentations 16 and can therefore be mounted easily, together with the holder frame 15 , on a second mold plate 19 , shown in FIG. 6 .
- the alignment pins 14 serve to align the holder frame 15 and the silicone frame 17 on the second mold plate 19 .
- the silicone frame 17 comes to rest on the second mold plate 19 in such a way that the opening 18 in the silicone frame 17 is aligned with a mounting 20 in the second mold plate 19 .
- the mounting 20 with its sidebars 21 , occupies the space in the silicone frame 17 that has been created by the base 13 of the first mold plate 11 .
- it likewise has a hexagonal cross section.
- Tiny balls 22 are placed close together in the mounting 20 .
- the tiny balls 22 have a radius that is essentially equivalent to the radius of the micro-lenses 8 to be produced. Since the mounting 20 has a hexagonal cross section, and since the tiny balls 22 are located close together, these balls 22 are arranged in accordance with a hexagonal lattice structure.
- the casting apparatus 23 has a suction stub 25 , on which a base plate 26 that holds the printed circuit board 1 is mounted. For that purpose, a central suction opening 27 is provided that leads to the printed circuit board 1 .
- the holder frame 15 with the micro-lens mold 24 is located above the base plate 26 . The two are partly covered by a pressing plate 28 , which is connected to the base plate 26 via a screw connection, not shown, and assures the secure seat of the micro-lens mold 24 on the base plate 26 .
- the alignment pins 14 have left leadthroughs 29 behind in the micro-lens mold 24 , and these leadthroughs serve to introduce the synthetic resin into the space in the micro-lens mold 24 above the printed circuit board 1 .
- the printed circuit board 1 under the micro-lens mold 24 is understood to have already been provided with the semiconductor chips 7 and been bonded in final form.
- casting resin is introduced through the leadthroughs. This fills the space between the micro-lens mold 24 and the circuit board 1 , thus molding the micro-lenses 8 .
- FIG. 8 finally, a graph is shown in which the radiation output ⁇ is shown in a space angle, with a one-half opening angle of 60°, that is, an opening angle of 120°, as a function of the spacing ⁇ x.
- FIG. 8 shows the results of calculations.
- the calculations were performed with a semiconductor chip 7 with an outline of 200 ⁇ m ⁇ 200 ⁇ m and a height of 250 ⁇ m. It was assumed that the semiconductor chip emitted 70% of its radiation output from the top side 10 . The further 30% was assumed to emerge from the side faces of the semiconductor chip 7 . As the spectrum, the spectrum of a black body at 2000 K was assumed.
- a line 36 finally, shows the results to be expected without a micro-lens 8 .
- the diameters of the micro-lenses 8 were 500 ⁇ m, 600 ⁇ m, and 700 ⁇ m.
- FIG. 8 clearly shows that the radiation output in the space angle enclosed assumes its greatest values at a spacing ⁇ x of 0.1 mm. The radiation output is then approximately twice as high as without micro-lenses 8 . At this spacing, a large part of the active layer of the semiconductor chip 7 is also located inside the Weierstrass sphere of the micro-lenses 8 .
- micro-lenses 8 For practical reasons, it may nevertheless be advantageous if a diameter of 700 ⁇ m is selected for the micro-lenses 8 , because otherwise problems can occur in bonding the semiconductor chips 7 to the chip contact faces 6 and in bonding the bond wires 5 . Moreover, conventional casting resins shrink upon curing, which is why the cured micro-lenses are smaller by about 6% anyway than the corresponding molds of the micro-lens mold 24 .
Abstract
A method for producing a lens mold suitable for manufacturing a field of micro-lenses is disclosed. The method includes the step of molding the lens mold from a sheaf of closely-packed balls held by a hexagonal mounting.
Description
- This is a divisional of application Ser. No. 10/343,819, filed on Jul. 15, 2003, which is a national stage of International Application No. PCT/DE01/02874, filed on Jul. 30, 2001. Priority is claimed from German Patent Application No. 100 38 213, filed on Aug. 4, 2000. The entire content of application Ser. No. 10/343,819 is incorporated herein by reference.
- 1. Field of the Invention
- The invention relates to a method for producing a lens mold suitable for manufacturing a field of micro-lenses.
- 2. Description of the Related Art
- Radiation sources, such as light-emitting diodes, generally have a semiconductor chip cast integrally with a transparent lens body. It is also known for the radiation output of such radiation sources to be increased by the provision of many semiconductor chips. Such radiation sources typically have a condenser optical element, which comprises a lens. However, the radiation density of such radiation sources is often unsatisfactory if it is critically important to create a highly luminous radiation source with little three-dimensional spread.
- Disclosed below is a field of lenses, forming a hexagonal lattice, which is disposed upstream, in the projection direction, of the semiconductor chips. Because of the hexagonal arrangement of the lenses, a high density of the associated semiconductor chips per unit of surface area can be attained. Since the lenses are typically formed by sphere segments, it is possible to use sphere segments with large radii for the lenses. As a result, the radiation-emitting active layer of the semiconductor chips can to a great extent be located inside the Weierstrass sphere (see Sze, Physics & Semiconductor Devices, 2nd ed., Page 694 which is incorporated herein by reference) associated with the respective sphere. This leads to a high radiation yield for the individual semiconductor chips.
- It is an object of the invention to create a rational method for producing a lens mold suitable for manufacturing a field of lenses.
- This object is attained according to one aspect of the invention in that the lens mold is molded from a sheaf of closely-packed balls held by a hexagonal mounting.
- Because of the hexagonal mounting, the sheaf of balls in a sense puts itself into a hexagonal lattice structure, when the balls rest tightly against one another. It therefore suffices to assure that the mounting is completely filled with the balls to be molded.
- Other objects and features of the present invention will become apparent from the following detailed description considered in conjunction with the accompanying drawings. It is to be understood, however, that the drawings are designed solely for purposes of illustration and not as a definition of the limits of the invention, for which reference should be made to the appended claims. It should be further understood that the drawings are not necessarily drawn to scale and that, unless otherwise indicated, they are merely intended to conceptually illustrate the structures and procedures described herein.
-
FIG. 1 , a plan view on a printed circuit board, equipped with semiconductor chips and already bonded, for the radiation source of the invention; -
FIG. 2 , an enlarged cross-sectional view of the printed circuit board taken along line I-I ofFIG. 1 above which micro-lenses have been placed; -
FIG. 3 , a plan view on a field of lenses; -
FIG. 4 , a cross section through an apparatus that can be used to produce a casting mold for fabricating a field of micro-lenses; -
FIG. 5 , a plan view of the apparatus ofFIG. 4 ; -
FIG. 6 , a cross section through a further apparatus that can be used to produce the casting mold; -
FIG. 7 , a cross section through the casting apparatus used to produce the field of micro-lenses; and -
FIG. 8 , a graph that shows the radiation output as a function of the spacing between the upper edge of the semiconductor chip and the associated hemispherical micro-lens. -
FIG. 1 shows a plan view on a printedcircuit board 1, which is made from Al2O3 or Si. Embodied on the printedcircuit board 1 areterminal contacts 2, from which conductor tracks 3 lead tocontact points 4, to whichbond wires 5 are attached that lead to, among other things,chip contact faces 6.Semiconductor chips 7 are mounted on thechip contact faces 6 and are bonded in series line by line. -
FIG. 2 shows an enlarged detail of a cross section through the printedcircuit board 1 provided with micro-lenses 8. It can be seen that thesemiconductor chips 7 are each mounted with anunderside 9 on thechip contact faces 6. Thebond wires 5 are each mounted on atop side 10 of thesemiconductor chips 7 and lead to an adjacent chip contact face or to one of thecontact points 4. - The micro-lenses 8 are half spheres with a radius R. The geometric center point of the
micro-lenses 8 is located at a spacing Δx from the top side of thesemiconductor chips 7. The spacing Δx is selected such that at least half of the radiation-emitting active layer of each of thesemiconductor chips 7 is located inside the Weierstrass sphere of radius R/n, where n is the index of refraction of the material used for themicro-lens 8. The centers of the Weierstrass spheres coincide with the centers of the micro-lenses 8. Radiation generated inside the Weierstrass sphere can exit themicro-lens 8. It is therefore advantageous if as large as possible a portion of the active layers of thesemiconductor chips 7 come to be located inside the Weierstrass sphere. It is therefore important to select as large as possible a radius of themicro-lenses 8. Conversely, in that case the spacing betweensemiconductor chips 7 must also be selected as correspondingly great. However, a great spacing between thesemiconductor chips 7 means a low radiation density. The attempt is therefore made to keep the spacing between themicro-lenses 8 as slight as possible. The arrangement ofmicro-lenses 8 shown inFIG. 3 in a hexagonal lattice structure is the tightest possible arrangement ofmicro-lenses 8 and makes it possible to attain a high radiation output with at the same time a high radiation density. - The micro-lenses 8 are expediently cast from synthetic resin. The production method is performed as follows:
- First, a
first mold plate 11 is produced, which as shown inFIG. 4 has acentral arbor 12 with a hexagonal cross section that can be seen inFIG. 5 . Thearbor 12 is disposed on abase 13.Alignment pins 14 are located in the vicinity of thebase 13. Aholder frame 15 is also mounted on thefirst mold plate 11 and hasindentations 16 on its inside. The interior defined by theholder frame 15 is filled with silicone. Asilicone frame 17 is thus formed, which in its center has an opening of hexagonal cross section. Thesilicone frame 17 engages theindentations 16 and can therefore be mounted easily, together with theholder frame 15, on asecond mold plate 19, shown inFIG. 6 . The alignment pins 14, also present here, serve to align theholder frame 15 and thesilicone frame 17 on thesecond mold plate 19. As a result, thesilicone frame 17 comes to rest on thesecond mold plate 19 in such a way that theopening 18 in thesilicone frame 17 is aligned with a mounting 20 in thesecond mold plate 19. The mounting 20, with itssidebars 21, occupies the space in thesilicone frame 17 that has been created by thebase 13 of thefirst mold plate 11. Furthermore, it likewise has a hexagonal cross section.Tiny balls 22 are placed close together in the mounting 20. Thetiny balls 22 have a radius that is essentially equivalent to the radius of themicro-lenses 8 to be produced. Since the mounting 20 has a hexagonal cross section, and since thetiny balls 22 are located close together, theseballs 22 are arranged in accordance with a hexagonal lattice structure. - Next, the
opening 18 is filled with silicone. The result is themicro-lens mold 24, shown inFIG. 7 in acasting apparatus 23. Thecasting apparatus 23 has asuction stub 25, on which abase plate 26 that holds the printedcircuit board 1 is mounted. For that purpose, acentral suction opening 27 is provided that leads to the printedcircuit board 1. Theholder frame 15 with themicro-lens mold 24 is located above thebase plate 26. The two are partly covered by apressing plate 28, which is connected to thebase plate 26 via a screw connection, not shown, and assures the secure seat of themicro-lens mold 24 on thebase plate 26. - The alignment pins 14 have left
leadthroughs 29 behind in themicro-lens mold 24, and these leadthroughs serve to introduce the synthetic resin into the space in themicro-lens mold 24 above the printedcircuit board 1. - It should be noted that the printed
circuit board 1 under themicro-lens mold 24 is understood to have already been provided with thesemiconductor chips 7 and been bonded in final form. - Finally, casting resin is introduced through the leadthroughs. This fills the space between the
micro-lens mold 24 and thecircuit board 1, thus molding themicro-lenses 8. - In
FIG. 8 , finally, a graph is shown in which the radiation output φ is shown in a space angle, with a one-half opening angle of 60°, that is, an opening angle of 120°, as a function of the spacing Δx. -
FIG. 8 shows the results of calculations. The calculations were performed with asemiconductor chip 7 with an outline of 200 μm×200 μm and a height of 250 μm. It was assumed that the semiconductor chip emitted 70% of its radiation output from thetop side 10. The further 30% was assumed to emerge from the side faces of thesemiconductor chip 7. As the spectrum, the spectrum of a black body at 2000 K was assumed. The calculations were performed for two types of casting resin in which thesemiconductor chip 7 is embedded. These were first a casting resin with an index of refraction of n=1.55 and second a casting resin with an index of refraction of n=1.87. The calculated curves 30, 31 and 32 each represent the results frommicro-lenses 8 with the radii of 250 μm, 300 μm, and 350 μm, for an index of refraction of n=1.55. Thecurves micro-lenses 8 with the radii of 250 μm, 300 μm, and 350 μm, for an index of refraction of n=1.78 of the casting resin. Aline 36, finally, shows the results to be expected without amicro-lens 8. - The diameters of the
micro-lenses 8 were 500 μm, 600 μm, and 700 μm.FIG. 8 clearly shows that the radiation output in the space angle enclosed assumes its greatest values at a spacing Δx of 0.1 mm. The radiation output is then approximately twice as high as withoutmicro-lenses 8. At this spacing, a large part of the active layer of thesemiconductor chip 7 is also located inside the Weierstrass sphere of themicro-lenses 8. - The advantages of the hexagonal arrangement of
micro-lenses 8 will become apparent from Table 1 that follows:TABLE 1 Arrangement Square Hexagonal Hexagonal Lens diameter 600 μm 600 μm 700 μm Area per unit 0.36 mm2 0.312 mm2 0.42 mm2 cell Total radiation 0.4777 W 0.45919 W 0.48668 W output at 70° half angle Radiation 1.3269 W/mm2 1.4718 W/mm2 1.1588 W/mm2 conduction per unit of surface area - From Table 1 it becomes clear that increasing the radius of the
micro-lenses 8 does not necessarily lead to an increase in the radiation output per unit of surface area. This is because, although with the greater radius of the micro-lenses 8 a larger portion of the active layer of thesemiconductor chips 7 comes to be located inside the Weierstrass sphere, in return the spacing of thesemiconductor chips 7 increases, so that the luminance decreases. - For practical reasons, it may nevertheless be advantageous if a diameter of 700 μm is selected for the
micro-lenses 8, because otherwise problems can occur in bonding thesemiconductor chips 7 to the chip contact faces 6 and in bonding thebond wires 5. Moreover, conventional casting resins shrink upon curing, which is why the cured micro-lenses are smaller by about 6% anyway than the corresponding molds of themicro-lens mold 24. - Thus, while there have shown and described and pointed out fundamental novel features of the invention as applied to a preferred embodiment thereof, it will be understood that various omissions and substitutions and changes in the form and details of the devices illustrated, and in their operation, may be made by those skilled in the art without departing from the spirit of the invention. For example, it is expressly intended that all combinations of those elements and/or method steps which perform substantially the same function in substantially the same way to achieve the same results are within the scope of the invention. Moreover, it should be recognized that structures and/or elements and/or method steps shown and/or described in connection with any disclosed form or embodiment of the invention may be incorporated in any other disclosed or described or suggested form or embodiment as a general matter of design choice. It is the intention, therefore, to be limited only as indicated by the scope of the claims appended hereto.
Claims (5)
1. A method for producing a lens mold suitable for manufacturing a field of micro-lenses, comprising the step of molding the lens mold from a sheaf of closely-packed balls held by a hexagonal mounting.
2. The method of claim 1 , wherein the lens mold is cast from silicone.
3. The method of claim 1 , wherein the mounting is surrounded by a silicone frame comprising an opening, said opening being aligned with the mounting.
4. The method of claim 3 , wherein the silicone frame is produced by filling silicone into the interior defined by a holder frame mounted on a first mold plate and surrounding an arbor of the first mold plate.
5. The method of claim 1 , wherein the balls have a radius that is essentially equivalent to the radius of the micro-lenses to be produced.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/894,569 US20070290383A1 (en) | 2000-08-04 | 2007-08-20 | Method for producing a lens mold |
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10038213A DE10038213A1 (en) | 2000-08-04 | 2000-08-04 | Radiation source and method of making a lens mold |
PCT/DE2001/002874 WO2002013231A2 (en) | 2000-08-04 | 2001-07-30 | Radiation source and method for producing a lens mould |
US10/343,819 US7262437B2 (en) | 2000-08-04 | 2001-07-30 | Radiation source and method for producing a lens mould |
DE10038213.4 | 2002-08-04 | ||
US11/894,569 US20070290383A1 (en) | 2000-08-04 | 2007-08-20 | Method for producing a lens mold |
Related Parent Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2001/002874 Division WO2002013231A2 (en) | 2000-08-04 | 2001-07-30 | Radiation source and method for producing a lens mould |
US10/343,819 Division US7262437B2 (en) | 2000-08-04 | 2001-07-30 | Radiation source and method for producing a lens mould |
Publications (1)
Publication Number | Publication Date |
---|---|
US20070290383A1 true US20070290383A1 (en) | 2007-12-20 |
Family
ID=7651403
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/343,819 Expired - Fee Related US7262437B2 (en) | 2000-08-04 | 2001-07-30 | Radiation source and method for producing a lens mould |
US11/894,569 Abandoned US20070290383A1 (en) | 2000-08-04 | 2007-08-20 | Method for producing a lens mold |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/343,819 Expired - Fee Related US7262437B2 (en) | 2000-08-04 | 2001-07-30 | Radiation source and method for producing a lens mould |
Country Status (7)
Country | Link |
---|---|
US (2) | US7262437B2 (en) |
EP (1) | EP1320890A2 (en) |
JP (2) | JP2004506321A (en) |
CN (2) | CN100517706C (en) |
DE (1) | DE10038213A1 (en) |
TW (1) | TW538255B (en) |
WO (1) | WO2002013231A2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20120170265A1 (en) * | 2009-09-17 | 2012-07-05 | Koninklijke Philips Electronics N.V. | Light-source module and light-emitting device |
WO2020225195A1 (en) * | 2019-05-09 | 2020-11-12 | Signify Holding B.V. | Improved thermal management in laser-based lighting using a truncated ball lens |
Families Citing this family (62)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2329756A (en) | 1997-09-25 | 1999-03-31 | Univ Bristol | Assemblies of light emitting diodes |
DE10051159C2 (en) * | 2000-10-16 | 2002-09-19 | Osram Opto Semiconductors Gmbh | LED module, e.g. White light source |
WO2003096387A2 (en) * | 2002-05-08 | 2003-11-20 | Phoseon Technology, Inc. | High efficiency solid-state light source and methods of use and manufacture |
US8063575B2 (en) | 2002-07-04 | 2011-11-22 | Tridonic Jennersdorf Gmbh | Current supply for luminescent diodes |
DE10230103B4 (en) * | 2002-07-04 | 2012-10-31 | Tridonic Ag | Power supply for light-emitting diodes |
EP2298229A1 (en) | 2002-07-25 | 2011-03-23 | Jonathan S. Dahm | Method and apparatus for using light emitting diodes for curing |
AU2003298561A1 (en) | 2002-08-23 | 2004-05-13 | Jonathan S. Dahm | Method and apparatus for using light emitting diodes |
EP1553641B1 (en) | 2002-08-29 | 2011-03-02 | Seoul Semiconductor Co., Ltd. | Light-emitting device having light-emitting diodes |
US7777235B2 (en) * | 2003-05-05 | 2010-08-17 | Lighting Science Group Corporation | Light emitting diodes with improved light collimation |
US7633093B2 (en) * | 2003-05-05 | 2009-12-15 | Lighting Science Group Corporation | Method of making optical light engines with elevated LEDs and resulting product |
US7300182B2 (en) * | 2003-05-05 | 2007-11-27 | Lamina Lighting, Inc. | LED light sources for image projection systems |
US7095053B2 (en) * | 2003-05-05 | 2006-08-22 | Lamina Ceramics, Inc. | Light emitting diodes packaged for high temperature operation |
US7528421B2 (en) * | 2003-05-05 | 2009-05-05 | Lamina Lighting, Inc. | Surface mountable light emitting diode assemblies packaged for high temperature operation |
WO2005041632A2 (en) | 2003-10-31 | 2005-05-12 | Phoseon Technology, Inc. | Collection optics for led array with offset hemispherical or faceted surfaces |
US7964883B2 (en) * | 2004-02-26 | 2011-06-21 | Lighting Science Group Corporation | Light emitting diode package assembly that emulates the light pattern produced by an incandescent filament bulb |
TWI312583B (en) | 2004-03-18 | 2009-07-21 | Phoseon Technology Inc | Micro-reflectors on a substrate for high-density led array |
US20050225222A1 (en) * | 2004-04-09 | 2005-10-13 | Joseph Mazzochette | Light emitting diode arrays with improved light extraction |
CA2589570C (en) * | 2004-06-15 | 2010-04-13 | Henkel Corporation | High power led electro-optic assembly |
US7252408B2 (en) * | 2004-07-19 | 2007-08-07 | Lamina Ceramics, Inc. | LED array package with internal feedback and control |
JP3802910B2 (en) * | 2004-09-13 | 2006-08-02 | ローム株式会社 | Semiconductor light emitting device |
US20090057697A1 (en) * | 2004-10-28 | 2009-03-05 | Henkel Corporation | Led assembly with led-reflector interconnect |
EP1866954B1 (en) | 2004-12-30 | 2016-04-20 | Phoseon Technology, Inc. | Methods and systems relating to light sources for use in industrial processes |
US9793247B2 (en) | 2005-01-10 | 2017-10-17 | Cree, Inc. | Solid state lighting component |
US7821023B2 (en) | 2005-01-10 | 2010-10-26 | Cree, Inc. | Solid state lighting component |
US9070850B2 (en) | 2007-10-31 | 2015-06-30 | Cree, Inc. | Light emitting diode package and method for fabricating same |
DE102005041064B4 (en) * | 2005-08-30 | 2023-01-19 | OSRAM Opto Semiconductors Gesellschaft mit beschränkter Haftung | Surface-mountable optoelectronic component and method for its production |
JP4521350B2 (en) * | 2005-10-13 | 2010-08-11 | オリンパス株式会社 | Lens array mold and method for manufacturing lens array mold |
TW200741134A (en) * | 2005-12-12 | 2007-11-01 | Koninkl Philips Electronics Nv | Optical device for creating an illumination window |
US9335006B2 (en) | 2006-04-18 | 2016-05-10 | Cree, Inc. | Saturated yellow phosphor converted LED and blue converted red LED |
US10295147B2 (en) | 2006-11-09 | 2019-05-21 | Cree, Inc. | LED array and method for fabricating same |
US8115213B2 (en) | 2007-02-08 | 2012-02-14 | Phoseon Technology, Inc. | Semiconductor light sources, systems, and methods |
JP5193490B2 (en) | 2007-04-20 | 2013-05-08 | 株式会社ミツトヨ | Measuring method using tracking laser interferometer |
JP2009099925A (en) | 2007-09-27 | 2009-05-07 | Tokyo Electron Ltd | Annealing apparatus |
WO2009041466A1 (en) * | 2007-09-27 | 2009-04-02 | Tokyo Electron Limited | Annealing apparatus |
DE102007059548A1 (en) * | 2007-09-28 | 2009-04-02 | Osram Opto Semiconductors Gmbh | Optoelectronic component and coupling-out lens for an optoelectronic component |
TWI384651B (en) * | 2008-08-20 | 2013-02-01 | Au Optronics Corp | A light emitting diodes structure and a light emitting diodes structure forming method |
US9425172B2 (en) | 2008-10-24 | 2016-08-23 | Cree, Inc. | Light emitter array |
KR100998017B1 (en) * | 2009-02-23 | 2010-12-03 | 삼성엘이디 주식회사 | Lens for Light Emitting Diode Package and Light Emitting Diode Package Having The Same |
US8653737B2 (en) | 2009-04-14 | 2014-02-18 | Phoseon Technology, Inc. | Controller for semiconductor lighting device |
US8678612B2 (en) | 2009-04-14 | 2014-03-25 | Phoseon Technology, Inc. | Modular light source |
US8657475B2 (en) | 2009-10-14 | 2014-02-25 | 3M Innovative Properties Company | Light source |
US8465172B2 (en) | 2009-12-17 | 2013-06-18 | Phoseon Technology, Inc. | Lighting module with diffractive optical element |
JP5526876B2 (en) * | 2010-03-09 | 2014-06-18 | 東京エレクトロン株式会社 | Heating device and annealing device |
US8669697B2 (en) | 2010-03-11 | 2014-03-11 | Phoseon Technology, Inc. | Cooling large arrays with high heat flux densities |
DE102010027875A1 (en) | 2010-04-16 | 2011-10-20 | Osram Opto Semiconductors Gmbh | Optoelectronic component and method for producing an optoelectronic component |
US8591078B2 (en) | 2010-06-03 | 2013-11-26 | Phoseon Technology, Inc. | Microchannel cooler for light emitting diode light fixtures |
JPWO2012057163A1 (en) * | 2010-10-26 | 2014-05-12 | 東芝ライテック株式会社 | Light emitting device and lighting device |
US9357592B2 (en) | 2010-11-18 | 2016-05-31 | Phoseon Technology, Inc. | Light source temperature monitor and control |
US9786811B2 (en) | 2011-02-04 | 2017-10-10 | Cree, Inc. | Tilted emission LED array |
US10842016B2 (en) | 2011-07-06 | 2020-11-17 | Cree, Inc. | Compact optically efficient solid state light source with integrated thermal management |
US8872137B2 (en) | 2011-09-15 | 2014-10-28 | Phoseon Technology, Inc. | Dual elliptical reflector with a co-located foci for curing optical fibers |
US9126432B2 (en) | 2011-09-20 | 2015-09-08 | Phoseon Technology, Inc. | Differential Ultraviolet curing using external optical elements |
EP2766762B1 (en) | 2011-10-12 | 2019-07-17 | Phoseon Technology, Inc. | Multiple light collection and lens combinations with co-located foci for curing optical fibers |
US8823279B2 (en) | 2011-10-27 | 2014-09-02 | Phoseon Technology, Inc. | Smart FET circuit |
US8931928B2 (en) | 2011-11-01 | 2015-01-13 | Phoseon Technology, Inc. | Removable window frame for lighting module |
US8851715B2 (en) | 2012-01-13 | 2014-10-07 | Phoseon Technology, Inc. | Lamp ventilation system |
US8888336B2 (en) | 2012-02-29 | 2014-11-18 | Phoseon Technology, Inc. | Air deflectors for heat management in a lighting module |
US8678622B2 (en) | 2012-04-27 | 2014-03-25 | Phoseon Technology, Inc. | Wrap-around window for lighting module |
CN103511975A (en) * | 2013-10-25 | 2014-01-15 | 浙江晶日照明科技有限公司 | Light-emitting device suitable for LED wash wall lamp |
CN104566210A (en) * | 2013-10-25 | 2015-04-29 | 浚洸光学科技股份有限公司 | Micro structure ranging method |
US11149936B2 (en) * | 2020-02-18 | 2021-10-19 | Exposure Illumination Architects, Inc. | Uniformly lit planar field of illumination |
CN111169058B (en) * | 2020-04-13 | 2020-07-03 | 成都菲斯特科技有限公司 | Fresnel lens mold and preparation method thereof and preparation method of Fresnel lens |
Citations (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4022855A (en) * | 1975-03-17 | 1977-05-10 | Eastman Kodak Company | Method for making a plastic optical element having a gradient index of refraction |
US4165474A (en) * | 1977-12-27 | 1979-08-21 | Texas Instruments Incorporated | Optoelectronic displays using uniformly spaced arrays of semi-sphere light-emitting diodes |
US4975814A (en) * | 1988-08-10 | 1990-12-04 | Telefunken Electronic Gmbh | Wide-area lamp |
US5396350A (en) * | 1993-11-05 | 1995-03-07 | Alliedsignal Inc. | Backlighting apparatus employing an array of microprisms |
US5439621A (en) * | 1993-04-12 | 1995-08-08 | Minnesota Mining And Manufacturing Company | Method of making an array of variable focal length microlenses |
US5528474A (en) * | 1994-07-18 | 1996-06-18 | Grote Industries, Inc. | Led array vehicle lamp |
US5600148A (en) * | 1994-12-30 | 1997-02-04 | Honeywell Inc. | Low power infrared scene projector array and method of manufacture |
US5726719A (en) * | 1994-10-17 | 1998-03-10 | Sharp Kabushiki Kaisha | Projection-type color display device |
US6096159A (en) * | 1997-09-12 | 2000-08-01 | Sony Corporation | Method of manufacturing plano lens |
US6339503B1 (en) * | 1998-11-06 | 2002-01-15 | Oni Systems Corp. | Optical interconnect using microlens/minilens relay |
US6365920B1 (en) * | 1997-03-18 | 2002-04-02 | Korvet Lights | Luminescent diode |
US20030178627A1 (en) * | 2000-10-16 | 2003-09-25 | Werner Marchl | Led module |
US6665060B1 (en) * | 1999-10-29 | 2003-12-16 | Cytyc Corporation | Cytological imaging system and method |
US6715901B2 (en) * | 2002-08-15 | 2004-04-06 | Shi-Hwa Huang | Image projector system having a light source that includes at least four light emitting diode modules |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1203357A (en) * | 1968-12-13 | 1970-08-26 | Rlm Res Corp | Production of lenticular sheets for integral photography |
JPS6179269A (en) * | 1984-09-26 | 1986-04-22 | Hitachi Micro Comput Eng Ltd | Optical communication equipment |
JPS62262023A (en) * | 1986-05-09 | 1987-11-14 | Hitachi Ltd | Liquid crystal display device |
JPS6332972A (en) * | 1986-07-26 | 1988-02-12 | Mitsubishi Cable Ind Ltd | Lamp |
JPH038204A (en) | 1989-06-05 | 1991-01-16 | Nippon Denyo Kk | Led lamp device |
JP2626305B2 (en) | 1991-04-23 | 1997-07-02 | 日本ビクター株式会社 | How to make a fly-eye lens plate stamper |
JP2900000B2 (en) | 1991-07-12 | 1999-06-02 | タキロン株式会社 | Light emitting display and method of manufacturing the same |
KR100407874B1 (en) | 1994-09-09 | 2004-05-24 | 코닌클리케 필립스 일렉트로닉스 엔.브이. | Mold manufacturing method for optical element manufacturing and apparatus for performing same |
JPH08227603A (en) * | 1995-02-21 | 1996-09-03 | Koito Mfg Co Ltd | Display lamp for vehicle |
DE19621148A1 (en) * | 1996-05-14 | 1997-12-04 | Magna Reflex Holding Gmbh | Lighting element, especially e.g. for use in motor vehicles |
JPH1012926A (en) | 1996-06-20 | 1998-01-16 | Toyoda Gosei Co Ltd | Full color emission diode lamp and display |
BR9813223A (en) | 1997-09-25 | 2000-08-29 | Univ Bristol | Optical radiation device |
-
2000
- 2000-08-04 DE DE10038213A patent/DE10038213A1/en not_active Withdrawn
-
2001
- 2001-07-17 TW TW090117424A patent/TW538255B/en not_active IP Right Cessation
- 2001-07-30 WO PCT/DE2001/002874 patent/WO2002013231A2/en active Application Filing
- 2001-07-30 CN CNB018137725A patent/CN100517706C/en not_active Expired - Fee Related
- 2001-07-30 JP JP2002518497A patent/JP2004506321A/en active Pending
- 2001-07-30 EP EP01956408A patent/EP1320890A2/en not_active Withdrawn
- 2001-07-30 CN CNA2008100012624A patent/CN101219568A/en active Pending
- 2001-07-30 US US10/343,819 patent/US7262437B2/en not_active Expired - Fee Related
-
2006
- 2006-11-08 JP JP2006302593A patent/JP2007112134A/en active Pending
-
2007
- 2007-08-20 US US11/894,569 patent/US20070290383A1/en not_active Abandoned
Patent Citations (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4022855A (en) * | 1975-03-17 | 1977-05-10 | Eastman Kodak Company | Method for making a plastic optical element having a gradient index of refraction |
US4165474A (en) * | 1977-12-27 | 1979-08-21 | Texas Instruments Incorporated | Optoelectronic displays using uniformly spaced arrays of semi-sphere light-emitting diodes |
US4975814A (en) * | 1988-08-10 | 1990-12-04 | Telefunken Electronic Gmbh | Wide-area lamp |
US5439621A (en) * | 1993-04-12 | 1995-08-08 | Minnesota Mining And Manufacturing Company | Method of making an array of variable focal length microlenses |
US5396350A (en) * | 1993-11-05 | 1995-03-07 | Alliedsignal Inc. | Backlighting apparatus employing an array of microprisms |
US5528474A (en) * | 1994-07-18 | 1996-06-18 | Grote Industries, Inc. | Led array vehicle lamp |
US5726719A (en) * | 1994-10-17 | 1998-03-10 | Sharp Kabushiki Kaisha | Projection-type color display device |
US5600148A (en) * | 1994-12-30 | 1997-02-04 | Honeywell Inc. | Low power infrared scene projector array and method of manufacture |
US6365920B1 (en) * | 1997-03-18 | 2002-04-02 | Korvet Lights | Luminescent diode |
US6096159A (en) * | 1997-09-12 | 2000-08-01 | Sony Corporation | Method of manufacturing plano lens |
US6339503B1 (en) * | 1998-11-06 | 2002-01-15 | Oni Systems Corp. | Optical interconnect using microlens/minilens relay |
US6665060B1 (en) * | 1999-10-29 | 2003-12-16 | Cytyc Corporation | Cytological imaging system and method |
US20030178627A1 (en) * | 2000-10-16 | 2003-09-25 | Werner Marchl | Led module |
US6715901B2 (en) * | 2002-08-15 | 2004-04-06 | Shi-Hwa Huang | Image projector system having a light source that includes at least four light emitting diode modules |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20120170265A1 (en) * | 2009-09-17 | 2012-07-05 | Koninklijke Philips Electronics N.V. | Light-source module and light-emitting device |
US9743521B2 (en) * | 2009-09-17 | 2017-08-22 | Philips Lighting Holding B.V. | Light-source module and light-emitting device |
WO2020225195A1 (en) * | 2019-05-09 | 2020-11-12 | Signify Holding B.V. | Improved thermal management in laser-based lighting using a truncated ball lens |
Also Published As
Publication number | Publication date |
---|---|
US20040026706A1 (en) | 2004-02-12 |
CN1447983A (en) | 2003-10-08 |
WO2002013231A2 (en) | 2002-02-14 |
TW538255B (en) | 2003-06-21 |
JP2007112134A (en) | 2007-05-10 |
CN101219568A (en) | 2008-07-16 |
US7262437B2 (en) | 2007-08-28 |
JP2004506321A (en) | 2004-02-26 |
CN100517706C (en) | 2009-07-22 |
EP1320890A2 (en) | 2003-06-25 |
WO2002013231A3 (en) | 2002-06-20 |
DE10038213A1 (en) | 2002-03-07 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US20070290383A1 (en) | Method for producing a lens mold | |
KR101488448B1 (en) | Led package and method for fabricating the same | |
US10677417B2 (en) | Package for light emitting device and method for packaging the same | |
US6407411B1 (en) | Led lead frame assembly | |
KR101149645B1 (en) | Optocoupler devices | |
JP4444822B2 (en) | Surface mountable small light emitting diode and / or photodiode and method for manufacturing the diode | |
US20090004778A1 (en) | Manufacturing Method of Light Emitting Diode | |
US10692825B2 (en) | Light-emitting chip package | |
US20100127288A1 (en) | Light-emitting diode devices and methods for fabricating the same | |
CN110828447B (en) | Semiconductor package and method for manufacturing the same | |
JP2000277808A (en) | Light source device and its manufacture | |
US11223000B2 (en) | Method of manufacturing light emitting element mounting base member, method of manufacturing light emitting device using the light emitting element mounting base member, light emitting element mounting base member, and light emitting device using the light emitting element mounting base member | |
KR100757825B1 (en) | Manufacturing method of light emitting diode | |
KR101078028B1 (en) | Light emitting diode and lead frame thereof | |
US7515061B2 (en) | LED package structure for increasing light-emitting efficiency and method of packaging the same | |
US7662661B2 (en) | Method of manufacturing a substrate structure for increasing cutting precision and strength thereof | |
US20220021189A1 (en) | Laser device and method for manufacturing a laser device | |
KR101549383B1 (en) | Led package and method for fabricating the same | |
JP2936244B2 (en) | LED lighting equipment | |
KR101423455B1 (en) | Led package and method for fabricating the same | |
TW202109921A (en) | Semiconductor light-emitting device | |
CN113571490A (en) | Package structure and method for forming the same | |
US8026618B2 (en) | Semiconductor device comprising a plastic housing, a semiconductor chip and an interposer including a convex or concave lens-shape top side fitting shape | |
KR20180035563A (en) | Light source unit and method for manufacturing the same |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
STCB | Information on status: application discontinuation |
Free format text: EXPRESSLY ABANDONED -- DURING EXAMINATION |