WO2000071930A1 - Luminaire with leds - Google Patents
Luminaire with leds Download PDFInfo
- Publication number
- WO2000071930A1 WO2000071930A1 PCT/EP2000/004186 EP0004186W WO0071930A1 WO 2000071930 A1 WO2000071930 A1 WO 2000071930A1 EP 0004186 W EP0004186 W EP 0004186W WO 0071930 A1 WO0071930 A1 WO 0071930A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- luminaire
- light
- reflector
- axis
- array
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S8/00—Lighting devices intended for fixed installation
- F21S8/04—Lighting devices intended for fixed installation intended only for mounting on a ceiling or the like overhead structures
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S10/00—Lighting devices or systems producing a varying lighting effect
- F21S10/02—Lighting devices or systems producing a varying lighting effect changing colors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
- F21S41/37—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors characterised by their material, surface treatment or coatings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
- F21S43/10—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source
- F21S43/13—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source characterised by the type of light source
- F21S43/14—Light emitting diodes [LED]
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
- F21S43/30—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by reflectors
- F21S43/33—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by reflectors characterised by their material, surface treatment or coatings
-
- 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
- F21V7/00—Reflectors for light sources
- F21V7/04—Optical design
-
- 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
- F21V7/00—Reflectors for light sources
- F21V7/04—Optical design
- F21V7/09—Optical design with a combination of different curvatures
-
- 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
- F21V7/00—Reflectors for light sources
- F21V7/22—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors
- F21V7/28—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors characterised by coatings
- F21V7/30—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors characterised by coatings the coatings comprising photoluminescent substances
-
- 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
- F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
- F21V9/40—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters with provision for controlling spectral properties, e.g. colour, or intensity
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
- F21S43/30—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by reflectors
- F21S43/31—Optical layout thereof
-
- 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
- F21V7/00—Reflectors for light sources
- F21V7/0008—Reflectors for light sources providing for indirect lighting
-
- 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
- F21Y2103/00—Elongate light sources, e.g. fluorescent tubes
- F21Y2103/10—Elongate light sources, e.g. fluorescent tubes comprising a linear array of point-like light-generating elements
-
- 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
- F21Y2113/00—Combination of light sources
- F21Y2113/10—Combination of light sources of different colours
- F21Y2113/13—Combination of light sources of different colours comprising an assembly of point-like light sources
-
- 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]
Definitions
- the invention relates to a luminaire having a reflector which mixes light from a multi-color array of LEDs, and more particularly to a low-profile luminaire which generates white light from a linear array of LEDs.
- a standard low profile luminaire for mounting in a ceiling employs tubular discharge lamps having fluorescent coatings which determine the spectra of emitted light.
- the lamps generally are not dimmable, and the user has no control over the color temperature.
- An array of LEDs in each of a plurality of colors offers the possibility of creating a luminaire in which the color temperature may be controlled at any power level, thereby enabling a lamp which is dimmable and emits a uniformly white light at any power level.
- JP-A-06 237 017 discloses a polychromatic light emitting diode lamp having a 3 x 3 array of light emitting diodes of two types, a first type having elements for emitting red light and blue light, and a second type having elements for emitting red light and green light.
- the stated object is to mix colors so that the mixed color would be recognized as the same color in any direction, but there are no optical provisions to facilitate mixing. It is simply a two-dimensional array of LEDs in a lamp case filled with resin, which would do little more than provide some diffusion.
- U.S. Application Serial No. 09/277,645 which was filed on March 26, 1999, discloses a luminaire having a reflector which mixes light from a multi-color array LEDs.
- the array is arranged in the entrance aperture of a reflecting tube which preferably flares outward toward the exit aperture, like a horn, and has a square or other non-round cross section.
- the object is to produce a collimated beam of white light in the manner of a spotlight.
- the design is unsuitable for a low-profile luminaire for general diffuse illumination.
- the luminaire according to the invention utilizes a linear array of light injectors, including at least one light injector in each of a plurality of colors, typically red, green, and blue.
- Each injector has an LED in the respective color, and design optics for confining the emitted light within a cone having semi-angle ⁇ s .
- the array is parallel to the y-axis of an x-y-z coordinate system, arranged so that substantially all of the emitted light is emitted in the positive x and z directions.
- a reflector situated beside the array of light injectors has a shape defined by a curve in the x-z plane in the positive x and z directions.
- the surface is formed by a projection of the curve parallel to the y-axis, and is arranged to receive substantially all of the light within the semi-angles ⁇ s of the injectors in the array.
- a luminaire according to the invention offers the advantage of adjustable color temperature, because the power to the LEDs in each color of the array may be controlled individually. Likewise, the luminaire is fully dimmable, as the power to the different color LEDs may be controlled in concert.
- the preferred luminaire also has two plane mirrors parallel to the x-z plane at the ends of the surface. Their purpose is to contain and redirect light from the injectors and the main reflector either to the main reflector or to the exit aperture.
- the reflector preferably has a Lambertian surface, which is a diffusing surface for which the intensity of reflected radiation is substantially independent of direction (a perfectly diffusing surface is a Lambert surface).
- a phosphor powder coating can yield 95- 99% reflection, while a brushed aluminum surface can yield 75% reflection.
- the surface may have partially specular reflectivity, so that it has partially directional reflected light.
- Such a luminaire could serve as a wall sconce where a portion of the light is directed at the floor for walking illumination while the rest of the light gives general diffuse illumination.
- the luminaire preferably also includes a cover plate which provides mechanical protection for the main reflector, and defines the exit aperture.
- This plate may be transparent, or may provide any desired amount of diffusion. It may be designed as a lens which cooperates with a reflector having a non-uniform intensity.
- Fig. 1 is a schematic perspective of a low-profile luminaire according to the invention.
- Fig. 2A is a schematic end view of the luminaire, showing the geometry.
- Fig. 2B is a table defining the parameters in Fig. 2A.
- Fig. 3 is a schematic end view showing a luminaire with a cover plate configured as a Fresnel lens.
- Fig. 4 shows a design variation utilizing a main reflector designed as a series of specular reflecting slats parallel to the y-axis.
- the luminaire according to the invention comprises a linear array of LED sources or injectors 10, a specially curved Lambertian reflector 20, two specular reflecting planar sidewalls 30, and a transparent cover plate 40.
- the design parameters of the LED sources 10 and of the reflector 20 are interrelated. There is no single optimum design, but rather a set of trade offs among such parameters as thickness, total lumen output, and degree of color mixing at the cove ⁇ late (all designs mix well at a distance). In order to get good color mixing at the cover plate, the different color LEDs should be distributed as uniformly as possible.
- the luminaire has a width W, a length L, and a thickness T (x, y, and z dimensions respectively; a left-handed coordinate system is shown).
- the constraints on each of the dimensions are different and depend on the application, but generally the width is 100- 400 mm, the thickness is 10-25% of the width, and the length can vary from about 100 mm to several meters (there is no constraint on the length).
- Each source 10 is a package of one or more LED chips plus primary optics, comprising an "injector".
- Each injector emits into a cone of semi- angle ⁇ s , which is determined by a reflector such as a compound parabolic concentrator (CPC) or other optics.
- CPC compound parabolic concentrator
- the reflector 20 is a Lambertian reflector which maximizes diffusion.
- the reflector 20 is shaped such that the injectors illuminate the reflector either uniformly along the x direction or, more generally, according to a specified (non- uniform) pattern. The choice of pattern depends upon the application (see below for an example using a non-uniform distribution).
- the reflector shape is defined by a curve in the x-z plane, which accomplishes this illumination pattern.
- the surface is then defined by a parallel projection of this curve in the y-direction. It is important to note that a surface generated in this way is relatively easy to manufacture.
- the starting material e.g. glass or aluminum
- Fig. 2 shows one method, where the injector emission cone full angle 2 ⁇ S is divided into (2n) intervals bounded by (2n+l) rays.
- the first ray (r is chosen as an extreme ray of the injector, making an angle of 2 ⁇ S with the x-axis.
- the next point (x 2 , y ) is chosen such that it lies on the next ray (r 2 ), a distance in the x direction proportional to the reciprocal of the fractional flux ⁇ i desired for that x-coordinate.
- ⁇ l/(2n) for all i.
- Subsequent points are defined by repeating this procedure (see the inductive formula in Fig. 2), and then connecting the set of points and smoothing the curve appropriately. The details of the smoothing are not important to the proper functioning. It is also possible to design the curve empirically, either experimentally or using a ray-tracing program.
- a reflector of the general shape of Fig. 2 can be varied in a trial-and-error fashion until the distribution at the cover plate (or at some intermediate distance away from the cover plate) has the desired distribution, uniform or otherwise.
- the transparent cover plate 40 provides mechanical protection to the main reflector 20, and defines the exit aperture. It may be plastic or glass. It is permissible that this plate be a flat, smooth plate (i.e. clear transparent), or that it have any desired amount of diffusion (e.g. ground glass, prismatic glass, corrugated glass, etc.). The specific properties of the cover plate will affect the appearance of the luminaire, and to a certain extent the overall light output distribution. The cover plate is not essential to the principle of operation, but rather allows design variation.
- the injectors determine such properties as the luminaire width and thickness, the amount of near-field color mixing (i.e. what is seen at the exit aperture), and the total lumen output for a given exit aperture area.
- the injector influences the luminaire size and also the total lumen output for a given luminaire size
- the parameter ⁇ s the angular emission width of the injector. From the invariance of the etendue, the larger the angle ⁇ s , the smaller the injector exit aperture can be. A smaller injector allows a higher packing density (and thus more total lumen output for a given luminaire length). But with the necessarily-larger ⁇ 2 S , the luminaire thickness must increase (as can be seen by considering Fig. 2). On the other hand, a larger ⁇ s allows better lateral mixing of colors in the near field as there is a greater overlap of the beams on the reflector.
- each injector may be positioned with its cone axis rotated by a specific angle ⁇ t out of the x-z plane. For example, injectors away from the midpoint of the source array may be rotated to point slightly towards the center (a "toe-in” angle). Additionally, each injector may emit into an elliptical cone, wider in the x-y plane, with a semi-angle up to 45 degrees, and narrower in the x-z plane. This better optimizes mixing and size, at the cost of some increased design complexity.
- Another variation is to put in two or more rows of injectors. This has the benefit of increasing the amount of light available, and also of improving mixing (since more than one LED can illuminate the same region of the reflector), while somewhat complicating the design of the main reflector and increasing the thickness.
- the main reflector can be made to have a partly specular/partly Lambertian reflectivity (by any of several techniques).
- a luminaire would have a partly directional beam.
- An example application is a wall sconce where a portion of the beam is directed at the floor for walking illumination, while the rest of the light gives general diffuse illumination.
- Fig. 3 shows an example of an application using a non-uniform intensity distribution across the exit aperture.
- the transparent cover plate 40 is a cylindrical Fresnel lens, and the output distribution in the x-z plane will be concentrated about the -z direction. The distribution in the y-z plane will remain Lambertian.
- Fig. 4 shows a variation wherein the curved main reflector 30 is approximated by a series of flat specular reflecting segments 32, which are connected by intermediate segments 34, which do not receive light.
- the segments 32 may be oriented so that any desired direction of reflected light may be achieved, shown here as all being parallel to the z-axis. Since metal reflectors with strongly anisotropic scattering properties exist, there is considerable design freedom for a reflector of this type.
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP00931162A EP1099080A1 (en) | 1999-05-20 | 2000-05-01 | Luminaire with leds |
JP2000620280A JP2003500846A (en) | 1999-05-20 | 2000-05-01 | Lighting device having LED |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/315,706 US6257737B1 (en) | 1999-05-20 | 1999-05-20 | Low-profile luminaire having a reflector for mixing light from a multi-color linear array of LEDs |
US09/315,706 | 1999-05-20 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2000071930A1 true WO2000071930A1 (en) | 2000-11-30 |
Family
ID=23225688
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2000/004186 WO2000071930A1 (en) | 1999-05-20 | 2000-05-01 | Luminaire with leds |
Country Status (5)
Country | Link |
---|---|
US (1) | US6257737B1 (en) |
EP (1) | EP1099080A1 (en) |
JP (1) | JP2003500846A (en) |
CN (1) | CN1306610A (en) |
WO (1) | WO2000071930A1 (en) |
Cited By (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2003062700A1 (en) * | 2002-01-22 | 2003-07-31 | Pulsar Light Of Cambridge Limited | Lighting panel |
GB2428881A (en) * | 2005-08-03 | 2007-02-07 | Lung-Chien Chen | A White Light Emitting Diode |
DE10161935B4 (en) * | 2000-12-18 | 2007-03-22 | Koito Mfg. Co., Ltd. | A method of designing a reflective surface of a reflector in a vehicle lamp |
DE102006042648A1 (en) * | 2006-09-12 | 2008-03-27 | Diehl Aerospace Gmbh | Lighting module for lighting cabin of aircraft, has multiple light emitting diodes, with reflector and with screen, where light emitting diodes are arranged in area covered by observation zone of screen |
DE102007020397A1 (en) * | 2007-04-27 | 2008-10-30 | Bombardier Transportation Gmbh | Lighting device for the illumination of vehicle interiors |
EP2080950A1 (en) * | 2006-11-10 | 2009-07-22 | Lo, Mei-Liang | A heat dissipating apparatus for lamp and method thereof |
EP2138874A1 (en) * | 2007-09-13 | 2009-12-30 | Kun Dian Photoelectric Enterprise Co. | Led lighting fixture |
EP2499425A1 (en) * | 2009-11-11 | 2012-09-19 | Danmarks Tekniske Universitet | Diffusely radiating led light system |
EP2420873A3 (en) * | 2001-12-14 | 2013-01-16 | QUALCOMM MEMS Technologies, Inc. | Uniform illumination system |
WO2013103667A3 (en) * | 2012-01-06 | 2013-10-10 | Cree, Inc. | Light fixture with textured reflector |
CN105473934A (en) * | 2013-08-08 | 2016-04-06 | 皇家飞利浦有限公司 | Universal daytime running lamp for automotive vehicles |
EP2326869B1 (en) * | 2008-09-12 | 2016-06-29 | Koninklijke Philips N.V. | Luminaire and illumination system |
EP3073179A1 (en) * | 2015-03-23 | 2016-09-28 | Siteco Beleuchtungstechnik GmbH | Led module with vaned reflector and luminaire with corresponding led module |
US9476566B2 (en) | 2012-01-06 | 2016-10-25 | Cree, Inc. | Light fixture with textured reflector |
WO2016171631A1 (en) * | 2015-04-24 | 2016-10-27 | VRTAČNIK, Hine, Alex | Led illuminating device with multi-segment directional optics |
AT16366U1 (en) * | 2015-03-30 | 2019-07-15 | Zumtobel Lighting Gmbh | Method and system for generating light staging |
NL2022923B1 (en) * | 2019-04-11 | 2020-10-20 | Etap Nv | A lighting unit |
WO2023078600A1 (en) * | 2021-11-04 | 2023-05-11 | Osram Gmbh | Optical device for disinfecting upper air layers in a room |
Families Citing this family (127)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20030133292A1 (en) * | 1999-11-18 | 2003-07-17 | Mueller George G. | Methods and apparatus for generating and modulating white light illumination conditions |
US6565248B2 (en) * | 1999-12-17 | 2003-05-20 | Kabushiki Kaisha Toshiba | Light guide, line illumination apparatus, and image acquisition system |
AU2001252894A1 (en) | 2000-03-06 | 2001-09-17 | Teledyne Lighting And Display Products, Inc. | Lighting apparatus having quantum dot layer |
US6603243B2 (en) * | 2000-03-06 | 2003-08-05 | Teledyne Technologies Incorporated | LED light source with field-of-view-controlling optics |
US6637924B2 (en) | 2000-11-15 | 2003-10-28 | Teledyne Lighting And Display Products, Inc. | Strip lighting apparatus and method |
US6547416B2 (en) * | 2000-12-21 | 2003-04-15 | Koninklijke Philips Electronics N.V. | Faceted multi-chip package to provide a beam of uniform white light from multiple monochrome LEDs |
US6523977B2 (en) * | 2001-02-20 | 2003-02-25 | Prokia Technology Co., Ltd. | Illuminating apparatus including a plurality of light sources that generate primary color light components |
US6784603B2 (en) * | 2001-07-20 | 2004-08-31 | Teledyne Lighting And Display Products, Inc. | Fluorescent lighting apparatus |
JP3986779B2 (en) * | 2001-08-15 | 2007-10-03 | 株式会社小糸製作所 | Vehicle lighting |
CN100342173C (en) * | 2001-08-27 | 2007-10-10 | 皇家飞利浦电子股份有限公司 | Light panel with enlarged viewing window |
US6948840B2 (en) * | 2001-11-16 | 2005-09-27 | Everbrite, Llc | Light emitting diode light bar |
US7153015B2 (en) * | 2001-12-31 | 2006-12-26 | Innovations In Optics, Inc. | Led white light optical system |
US6641284B2 (en) * | 2002-02-21 | 2003-11-04 | Whelen Engineering Company, Inc. | LED light assembly |
WO2003087655A2 (en) * | 2002-04-05 | 2003-10-23 | Gibson Guitar Corp. | Multicolor function indicator light |
US6856436B2 (en) * | 2002-06-26 | 2005-02-15 | Innovations In Optics, Inc. | Scanning light source system |
US6857772B2 (en) * | 2002-12-10 | 2005-02-22 | Innovations In Optics, Inc. | High performance light engine |
AT500750B8 (en) * | 2003-06-06 | 2007-02-15 | Zizala Lichtsysteme Gmbh | VEHICLE HEADLIGHTS |
US7521667B2 (en) | 2003-06-23 | 2009-04-21 | Advanced Optical Technologies, Llc | Intelligent solid state lighting |
US20070171649A1 (en) * | 2003-06-23 | 2007-07-26 | Advanced Optical Technologies, Llc | Signage using a diffusion chamber |
US20070051883A1 (en) * | 2003-06-23 | 2007-03-08 | Advanced Optical Technologies, Llc | Lighting using solid state light sources |
US20070235639A1 (en) * | 2003-06-23 | 2007-10-11 | Advanced Optical Technologies, Llc | Integrating chamber LED lighting with modulation to set color and/or intensity of output |
US6995355B2 (en) * | 2003-06-23 | 2006-02-07 | Advanced Optical Technologies, Llc | Optical integrating chamber lighting using multiple color sources |
US7145125B2 (en) * | 2003-06-23 | 2006-12-05 | Advanced Optical Technologies, Llc | Integrating chamber cone light using LED sources |
US20070138978A1 (en) * | 2003-06-23 | 2007-06-21 | Advanced Optical Technologies, Llc | Conversion of solid state source output to virtual source |
US7915085B2 (en) | 2003-09-18 | 2011-03-29 | Cree, Inc. | Molded chip fabrication method |
US7578600B2 (en) * | 2003-10-10 | 2009-08-25 | Federal Signal Corporation | LED light assembly with reflector having segmented curve section |
US8197110B2 (en) * | 2003-10-10 | 2012-06-12 | Federal Signal Corporation | Light assembly incorporating reflective features |
US7118261B2 (en) * | 2003-11-21 | 2006-10-10 | Whelen Engineering Company, Inc. | White position taillight for aircraft |
US7408201B2 (en) * | 2004-03-19 | 2008-08-05 | Philips Lumileds Lighting Company, Llc | Polarized semiconductor light emitting device |
US7808011B2 (en) * | 2004-03-19 | 2010-10-05 | Koninklijke Philips Electronics N.V. | Semiconductor light emitting devices including in-plane light emitting layers |
US7255264B2 (en) * | 2004-04-24 | 2007-08-14 | De Leon Hilary Laing | Cellular phone-based automatic payment system |
CN100412646C (en) * | 2004-05-08 | 2008-08-20 | 凛宜股份有限公司 | Light source device |
DE102004044358A1 (en) * | 2004-09-14 | 2006-03-16 | Jaschkowitz, Dieter | Light-emitting diode system for generating homogeneous flat light |
ATE514899T1 (en) * | 2004-09-20 | 2011-07-15 | Koninkl Philips Electronics Nv | LED COLLIMATOR ELEMENT WITH AN ASYMMETRIC COLLIMATOR |
US7513642B2 (en) * | 2004-09-20 | 2009-04-07 | Koninklijke Philips Electronics N.V. | LED collimator element with a semiparabolic reflector |
US7144131B2 (en) * | 2004-09-29 | 2006-12-05 | Advanced Optical Technologies, Llc | Optical system using LED coupled with phosphor-doped reflective materials |
US7220021B2 (en) * | 2004-12-01 | 2007-05-22 | Motorola, Inc. | Compact color illumination device |
KR100665005B1 (en) * | 2004-12-30 | 2007-01-09 | 삼성전기주식회사 | Backlight system having leds |
TWI263098B (en) * | 2005-02-16 | 2006-10-01 | Au Optronics Corp | Backlight module |
CA2620144A1 (en) * | 2005-04-06 | 2006-10-12 | Tir Technology Lp | Lighting module with compact colour mixing and collimating optics |
US20060274526A1 (en) * | 2005-04-26 | 2006-12-07 | Tir Systems Ltd. | Integrated sign illumination system |
US7585096B2 (en) * | 2005-05-18 | 2009-09-08 | Visteon Global Technologies, Inc. | Compound trough reflector for LED light sources |
TWI258044B (en) * | 2005-06-01 | 2006-07-11 | Au Optronics Corp | Direct-type backlight unit structure |
WO2007081719A2 (en) | 2006-01-05 | 2007-07-19 | Illumitex, Inc. | Separate optical device for directing light from an led |
US20070215195A1 (en) | 2006-03-18 | 2007-09-20 | Benyamin Buller | Elongated photovoltaic cells in tubular casings |
US7235736B1 (en) | 2006-03-18 | 2007-06-26 | Solyndra, Inc. | Monolithic integration of cylindrical solar cells |
US8425271B2 (en) * | 2006-09-01 | 2013-04-23 | Cree, Inc. | Phosphor position in light emitting diodes |
US7910938B2 (en) * | 2006-09-01 | 2011-03-22 | Cree, Inc. | Encapsulant profile for light emitting diodes |
JP2010506402A (en) | 2006-10-02 | 2010-02-25 | イルミテックス, インコーポレイテッド | LED system and method |
US20090275157A1 (en) * | 2006-10-02 | 2009-11-05 | Illumitex, Inc. | Optical device shaping |
US9159888B2 (en) * | 2007-01-22 | 2015-10-13 | Cree, Inc. | Wafer level phosphor coating method and devices fabricated utilizing method |
US9024349B2 (en) | 2007-01-22 | 2015-05-05 | Cree, Inc. | Wafer level phosphor coating method and devices fabricated utilizing method |
JP5153152B2 (en) * | 2007-01-31 | 2013-02-27 | 富士フイルム株式会社 | Surface lighting device |
ITVI20070031A1 (en) * | 2007-02-01 | 2008-08-02 | Beghelli Spa | HIGH PERFORMANCE LIGHTING EQUIPMENT AND OPTIMAL INSTALLATION OF CEILING AND WALL-MOUNTED LIGHT |
WO2008098360A1 (en) * | 2007-02-16 | 2008-08-21 | Koninklijke Philips Electronics N.V. | Optical system for luminaire |
US7641361B2 (en) * | 2007-05-24 | 2010-01-05 | Brasstech, Inc. | Light emitting diode lamp |
US7940341B2 (en) * | 2007-08-23 | 2011-05-10 | Philips Lumileds Lighting Company | Light source for a projector |
CN102003643B (en) * | 2007-09-07 | 2014-03-05 | 展晶科技(深圳)有限公司 | Illuminating system using light-emitting diodes and light-emitting diodes thereof |
JP2009099271A (en) * | 2007-10-12 | 2009-05-07 | Harison Toshiba Lighting Corp | Hollow surface lighting device |
EP2207993A4 (en) * | 2007-11-08 | 2013-09-04 | Innovations In Optics Inc | Led illumination system |
US9041285B2 (en) | 2007-12-14 | 2015-05-26 | Cree, Inc. | Phosphor distribution in LED lamps using centrifugal force |
US8322881B1 (en) | 2007-12-21 | 2012-12-04 | Appalachian Lighting Systems, Inc. | Lighting fixture |
US8878219B2 (en) * | 2008-01-11 | 2014-11-04 | Cree, Inc. | Flip-chip phosphor coating method and devices fabricated utilizing method |
CN101939849A (en) | 2008-02-08 | 2011-01-05 | 伊鲁米特克有限公司 | Be used for the system and method that emitter layer is shaped |
EP2340391A1 (en) * | 2008-10-31 | 2011-07-06 | Code 3, Inc. | Light fixture with inner and outer trough reflectors |
TW201034256A (en) | 2008-12-11 | 2010-09-16 | Illumitex Inc | Systems and methods for packaging light-emitting diode devices |
US8869419B2 (en) * | 2009-02-13 | 2014-10-28 | Soliduv, Inc. | Efficient irradiation system using curved reflective surfaces |
DE102009010213A1 (en) * | 2009-02-23 | 2010-08-26 | Osram Gesellschaft mit beschränkter Haftung | Optoelectronic module |
US8449128B2 (en) | 2009-08-20 | 2013-05-28 | Illumitex, Inc. | System and method for a lens and phosphor layer |
US8585253B2 (en) | 2009-08-20 | 2013-11-19 | Illumitex, Inc. | System and method for color mixing lens array |
US10546846B2 (en) | 2010-07-23 | 2020-01-28 | Cree, Inc. | Light transmission control for masking appearance of solid state light sources |
US9166126B2 (en) | 2011-01-31 | 2015-10-20 | Cree, Inc. | Conformally coated light emitting devices and methods for providing the same |
EP3205925A1 (en) | 2011-04-08 | 2017-08-16 | Brite Shot, Inc. | Led array lighting assembly |
KR101824039B1 (en) | 2011-07-29 | 2018-01-31 | 엘지이노텍 주식회사 | display apparatus |
US9279564B1 (en) | 2011-08-11 | 2016-03-08 | Universal Lighting Technologies, Inc. | Indirect area lighting apparatus and methods |
CN202561464U (en) * | 2011-08-29 | 2012-11-28 | 魏子涵 | Reflective type LED illuminating lamp |
US9752753B2 (en) | 2012-03-14 | 2017-09-05 | Samsung Display Co., Ltd. | Display device comprising the same |
US9188290B2 (en) * | 2012-04-10 | 2015-11-17 | Cree, Inc. | Indirect linear fixture |
US9616811B2 (en) | 2012-07-10 | 2017-04-11 | Emergency Technology, Inc. | Emergency vehicle light fixture with reflective surface having alternating linear and revolved parabolic segments |
US9366396B2 (en) | 2013-01-30 | 2016-06-14 | Cree, Inc. | Optical waveguide and lamp including same |
US9625638B2 (en) | 2013-03-15 | 2017-04-18 | Cree, Inc. | Optical waveguide body |
US10436969B2 (en) | 2013-01-30 | 2019-10-08 | Ideal Industries Lighting Llc | Optical waveguide and luminaire incorporating same |
US9869432B2 (en) | 2013-01-30 | 2018-01-16 | Cree, Inc. | Luminaires using waveguide bodies and optical elements |
US10422944B2 (en) | 2013-01-30 | 2019-09-24 | Ideal Industries Lighting Llc | Multi-stage optical waveguide for a luminaire |
US9291320B2 (en) | 2013-01-30 | 2016-03-22 | Cree, Inc. | Consolidated troffer |
US9690029B2 (en) | 2013-01-30 | 2017-06-27 | Cree, Inc. | Optical waveguides and luminaires incorporating same |
US9442243B2 (en) | 2013-01-30 | 2016-09-13 | Cree, Inc. | Waveguide bodies including redirection features and methods of producing same |
US9423104B2 (en) * | 2013-03-14 | 2016-08-23 | Cree, Inc. | Linear solid state lighting fixture with asymmetric light distribution |
US9920901B2 (en) | 2013-03-15 | 2018-03-20 | Cree, Inc. | LED lensing arrangement |
US10379278B2 (en) * | 2013-03-15 | 2019-08-13 | Ideal Industries Lighting Llc | Outdoor and/or enclosed structure LED luminaire outdoor and/or enclosed structure LED luminaire having outward illumination |
US9798072B2 (en) | 2013-03-15 | 2017-10-24 | Cree, Inc. | Optical element and method of forming an optical element |
US10502899B2 (en) | 2013-03-15 | 2019-12-10 | Ideal Industries Lighting Llc | Outdoor and/or enclosed structure LED luminaire |
US9581750B2 (en) | 2013-03-15 | 2017-02-28 | Cree, Inc. | Outdoor and/or enclosed structure LED luminaire |
US10436970B2 (en) | 2013-03-15 | 2019-10-08 | Ideal Industries Lighting Llc | Shaped optical waveguide bodies |
US10209429B2 (en) | 2013-03-15 | 2019-02-19 | Cree, Inc. | Luminaire with selectable luminous intensity pattern |
US9366799B2 (en) | 2013-03-15 | 2016-06-14 | Cree, Inc. | Optical waveguide bodies and luminaires utilizing same |
US9513424B2 (en) | 2013-03-15 | 2016-12-06 | Cree, Inc. | Optical components for luminaire |
US9632295B2 (en) | 2014-05-30 | 2017-04-25 | Cree, Inc. | Flood optic |
US10400984B2 (en) | 2013-03-15 | 2019-09-03 | Cree, Inc. | LED light fixture and unitary optic member therefor |
WO2014206971A1 (en) * | 2013-06-25 | 2014-12-31 | Nestec S.A. | Selection panel for a beverage dispensing device |
CN103438368B (en) * | 2013-07-30 | 2015-09-23 | 达亮电子(苏州)有限公司 | Plate lamp module and backlight module |
US9683717B1 (en) | 2014-05-12 | 2017-06-20 | Universal Lighting Technologies, Inc. | Asymmetric area lens for low-profile lighting system |
KR20160000972A (en) * | 2014-06-25 | 2016-01-06 | 주식회사 케이엠더블유 | An indirect lighting device using LED |
USD753851S1 (en) | 2014-10-08 | 2016-04-12 | BeON HOME INC. | Illumination unit |
USD752272S1 (en) * | 2014-10-08 | 2016-03-22 | BeON HOME INC. | Electronic component for illumination device |
US9816681B1 (en) | 2015-05-06 | 2017-11-14 | Universal Lighting Technologies, Inc. | Side lit indirect flexible lighting system |
CN104976551A (en) * | 2015-05-20 | 2015-10-14 | 杨晓珺 | Adjustable blackboard lamp without direct glare |
US20170023208A1 (en) * | 2015-07-22 | 2017-01-26 | JST Performance, LLC | Method and apparatus for indirect lighting |
US9512978B1 (en) | 2015-08-13 | 2016-12-06 | Randal L Wimberly | Vortex light projection system, LED lensless primary optics system, and perfectly random LED color mixing system |
RU2607696C1 (en) * | 2015-11-14 | 2017-01-10 | Дмитрий Александрович Смолин | Light-emitting diode lamp with optical element |
US10618833B2 (en) | 2015-12-18 | 2020-04-14 | Heraeus Quarzglas Gmbh & Co. Kg | Preparation of a synthetic quartz glass grain |
JP6940236B2 (en) | 2015-12-18 | 2021-09-22 | ヘレウス クワルツグラス ゲーエムベーハー ウント コンパニー カーゲー | Preparation of quartz glass body by monitoring the dew point in the melting furnace |
JP6981710B2 (en) | 2015-12-18 | 2021-12-17 | ヘレウス クワルツグラス ゲーエムベーハー ウント コンパニー カーゲー | Preparation of Fused Quartz from Silicon Dioxide Granules |
TWI808933B (en) | 2015-12-18 | 2023-07-21 | 德商何瑞斯廓格拉斯公司 | Quartz glass body, silicon dioxide granulate, light guide, illuminant, and formed body, and process for preparing the same |
WO2017103121A2 (en) | 2015-12-18 | 2017-06-22 | Heraeus Quarzglas Gmbh & Co. Kg | Production of an opaque silica glass article |
TWI812586B (en) | 2015-12-18 | 2023-08-21 | 德商何瑞斯廓格拉斯公司 | Quartz glass body, manufacturing process and application thereof, and process for controlling a dew point at an outlet of an oven |
US10730780B2 (en) | 2015-12-18 | 2020-08-04 | Heraeus Quarzglas Gmbh & Co. Kg | Preparation of a quartz glass body in a multi-chamber oven |
TW201736291A (en) | 2015-12-18 | 2017-10-16 | 何瑞斯廓格拉斯公司 | Increase in silicon content in the preparation of quartz glass |
JP2019502633A (en) | 2015-12-18 | 2019-01-31 | ヘレウス クワルツグラス ゲーエムベーハー ウント コンパニー カーゲー | Glass fiber and base material made of homogeneous quartz glass |
KR20180095879A (en) | 2015-12-18 | 2018-08-28 | 헤래우스 크바르츠글라스 게엠베하 & 컴파니 케이지 | Treating the carbon-doped silica granules at elevated temperatures to reduce the alkaline earth metal content of the silica granules |
US11719882B2 (en) | 2016-05-06 | 2023-08-08 | Ideal Industries Lighting Llc | Waveguide-based light sources with dynamic beam shaping |
US10416377B2 (en) | 2016-05-06 | 2019-09-17 | Cree, Inc. | Luminaire with controllable light emission |
JP6204559B1 (en) * | 2016-06-07 | 2017-09-27 | ルーメンス カンパニー リミテッド | Linear LED module and backlight unit including the same |
DE202016103973U1 (en) * | 2016-07-21 | 2017-10-25 | Quantec Grund GmbH & Co. KG | Light-emitting device, reflector and obstacle fire |
US10739513B2 (en) | 2018-08-31 | 2020-08-11 | RAB Lighting Inc. | Apparatuses and methods for efficiently directing light toward and away from a mounting surface |
US10801679B2 (en) | 2018-10-08 | 2020-10-13 | RAB Lighting Inc. | Apparatuses and methods for assembling luminaires |
EP3868957B1 (en) * | 2020-02-20 | 2023-08-02 | Joseph Vögele AG | Road finisher with indirect lighting of a working area |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1021159A (en) * | 1963-11-18 | 1966-03-02 | Lucas Industries Ltd | Lamps |
EP0362993A2 (en) * | 1988-10-05 | 1990-04-11 | Hewlett-Packard Company | Nonimaging light source |
US5222795A (en) * | 1991-12-26 | 1993-06-29 | Light Sciences, Inc. | Controlled light extraction from light guides and fibers |
DE4237107A1 (en) * | 1992-11-03 | 1994-05-05 | Wustlich Holding Gmbh | Background illumination device for flat display surface - arranges LEDs in row parallel to one side wall on circuit board, below display surface, provides convex side wall, and fills enclosed space with light-scattering transparent material |
JPH06237017A (en) | 1993-02-10 | 1994-08-23 | Iwasaki Electric Co Ltd | Polychromatic light emitting diode lamp |
US5642933A (en) * | 1993-12-29 | 1997-07-01 | Patlite Corporation | Light source structure for signal indication lamp |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5613751A (en) * | 1995-06-27 | 1997-03-25 | Lumitex, Inc. | Light emitting panel assemblies |
-
1999
- 1999-05-20 US US09/315,706 patent/US6257737B1/en not_active Expired - Fee Related
-
2000
- 2000-05-01 JP JP2000620280A patent/JP2003500846A/en active Pending
- 2000-05-01 WO PCT/EP2000/004186 patent/WO2000071930A1/en not_active Application Discontinuation
- 2000-05-01 EP EP00931162A patent/EP1099080A1/en not_active Withdrawn
- 2000-05-01 CN CN00800939A patent/CN1306610A/en active Pending
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1021159A (en) * | 1963-11-18 | 1966-03-02 | Lucas Industries Ltd | Lamps |
EP0362993A2 (en) * | 1988-10-05 | 1990-04-11 | Hewlett-Packard Company | Nonimaging light source |
US5222795A (en) * | 1991-12-26 | 1993-06-29 | Light Sciences, Inc. | Controlled light extraction from light guides and fibers |
DE4237107A1 (en) * | 1992-11-03 | 1994-05-05 | Wustlich Holding Gmbh | Background illumination device for flat display surface - arranges LEDs in row parallel to one side wall on circuit board, below display surface, provides convex side wall, and fills enclosed space with light-scattering transparent material |
JPH06237017A (en) | 1993-02-10 | 1994-08-23 | Iwasaki Electric Co Ltd | Polychromatic light emitting diode lamp |
US5642933A (en) * | 1993-12-29 | 1997-07-01 | Patlite Corporation | Light source structure for signal indication lamp |
Cited By (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10161935B4 (en) * | 2000-12-18 | 2007-03-22 | Koito Mfg. Co., Ltd. | A method of designing a reflective surface of a reflector in a vehicle lamp |
EP2420873A3 (en) * | 2001-12-14 | 2013-01-16 | QUALCOMM MEMS Technologies, Inc. | Uniform illumination system |
GB2401675A (en) * | 2002-01-22 | 2004-11-17 | Pulsar Light Of Cambridge Ltd | Lighting panel |
GB2401675B (en) * | 2002-01-22 | 2006-03-15 | Pulsar Light Of Cambridge Ltd | Lighting panel |
WO2003062700A1 (en) * | 2002-01-22 | 2003-07-31 | Pulsar Light Of Cambridge Limited | Lighting panel |
GB2428881A (en) * | 2005-08-03 | 2007-02-07 | Lung-Chien Chen | A White Light Emitting Diode |
DE102006042648A1 (en) * | 2006-09-12 | 2008-03-27 | Diehl Aerospace Gmbh | Lighting module for lighting cabin of aircraft, has multiple light emitting diodes, with reflector and with screen, where light emitting diodes are arranged in area covered by observation zone of screen |
EP2080950A4 (en) * | 2006-11-10 | 2010-12-22 | Thermoking Technology Internat | A heat dissipating apparatus for lamp and method thereof |
EP2080950A1 (en) * | 2006-11-10 | 2009-07-22 | Lo, Mei-Liang | A heat dissipating apparatus for lamp and method thereof |
DE102007020397B8 (en) * | 2007-04-27 | 2012-08-30 | Bombardier Transportation Gmbh | Lighting device for the illumination of vehicle interiors |
DE102007020397B4 (en) * | 2007-04-27 | 2012-06-21 | Bombardier Transportation Gmbh | Lighting device for the illumination of vehicle interiors |
WO2008132008A1 (en) * | 2007-04-27 | 2008-11-06 | Bombardier Transportation Gmbh | Illumination device for illuminating the inside of a vehicle |
DE102007020397A1 (en) * | 2007-04-27 | 2008-10-30 | Bombardier Transportation Gmbh | Lighting device for the illumination of vehicle interiors |
EP2138874A1 (en) * | 2007-09-13 | 2009-12-30 | Kun Dian Photoelectric Enterprise Co. | Led lighting fixture |
EP2326869B1 (en) * | 2008-09-12 | 2016-06-29 | Koninklijke Philips N.V. | Luminaire and illumination system |
EP2499425A1 (en) * | 2009-11-11 | 2012-09-19 | Danmarks Tekniske Universitet | Diffusely radiating led light system |
US9476566B2 (en) | 2012-01-06 | 2016-10-25 | Cree, Inc. | Light fixture with textured reflector |
WO2013103667A3 (en) * | 2012-01-06 | 2013-10-10 | Cree, Inc. | Light fixture with textured reflector |
US9488329B2 (en) | 2012-01-06 | 2016-11-08 | Cree, Inc. | Light fixture with textured reflector |
CN105473934B (en) * | 2013-08-08 | 2018-03-30 | 皇家飞利浦有限公司 | General daytime running lamps for motor vehicles |
CN105473934A (en) * | 2013-08-08 | 2016-04-06 | 皇家飞利浦有限公司 | Universal daytime running lamp for automotive vehicles |
EP3073179A1 (en) * | 2015-03-23 | 2016-09-28 | Siteco Beleuchtungstechnik GmbH | Led module with vaned reflector and luminaire with corresponding led module |
AT16366U1 (en) * | 2015-03-30 | 2019-07-15 | Zumtobel Lighting Gmbh | Method and system for generating light staging |
WO2016171631A1 (en) * | 2015-04-24 | 2016-10-27 | VRTAČNIK, Hine, Alex | Led illuminating device with multi-segment directional optics |
NL2022923B1 (en) * | 2019-04-11 | 2020-10-20 | Etap Nv | A lighting unit |
WO2023078600A1 (en) * | 2021-11-04 | 2023-05-11 | Osram Gmbh | Optical device for disinfecting upper air layers in a room |
Also Published As
Publication number | Publication date |
---|---|
JP2003500846A (en) | 2003-01-07 |
CN1306610A (en) | 2001-08-01 |
US6257737B1 (en) | 2001-07-10 |
EP1099080A1 (en) | 2001-05-16 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US6257737B1 (en) | Low-profile luminaire having a reflector for mixing light from a multi-color linear array of LEDs | |
JP4783504B2 (en) | Lighting device having LED | |
EP1259754B1 (en) | Luminaire with a reflector and leds | |
US7854539B2 (en) | Illumination device comprising a light source and a light-guide | |
EP1996857B1 (en) | Optical device for mixing and redirecting light | |
US6095666A (en) | Light source | |
US6601970B2 (en) | Linear lighting system | |
US4242727A (en) | Luminaire reflector | |
US9423097B2 (en) | Light-emitting module with a curved prism sheet | |
CN103858244A (en) | Illumination devices including multiple light emitting elements | |
US20190186710A1 (en) | Led light fixture with light shaping features | |
CN101730818A (en) | Solid state optical system | |
US20110141725A1 (en) | Variable-color lighting system | |
US11131432B2 (en) | Variable beam source with mixing chamber | |
JPH07153302A (en) | Illumination apparatus | |
JP6919860B2 (en) | Lamps for wall irradiation and lighting equipment using them | |
WO2005106323A1 (en) | Variable colour lighting | |
JP4800184B2 (en) | Lighting device | |
Chaves et al. | Virtual filaments that mimic conventional light bulb filaments | |
CN110177973A (en) | Solid state illuminator light fixture and lamps and lanterns | |
JP2004139844A (en) | Lighting system |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 00800939.2 Country of ref document: CN |
|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): CN JP |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2000931162 Country of ref document: EP |
|
ENP | Entry into the national phase |
Ref document number: 2000 620280 Country of ref document: JP Kind code of ref document: A |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWP | Wipo information: published in national office |
Ref document number: 2000931162 Country of ref document: EP |
|
WWW | Wipo information: withdrawn in national office |
Ref document number: 2000931162 Country of ref document: EP |