CN105607211A - Lens adjusting structure and projection optic system - Google Patents

Lens adjusting structure and projection optic system Download PDF

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Publication number
CN105607211A
CN105607211A CN201511029281.4A CN201511029281A CN105607211A CN 105607211 A CN105607211 A CN 105607211A CN 201511029281 A CN201511029281 A CN 201511029281A CN 105607211 A CN105607211 A CN 105607211A
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CN
China
Prior art keywords
optical system
reflection
blue laser
lens
fluorescence
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Granted
Application number
CN201511029281.4A
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Chinese (zh)
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CN105607211B (en
Inventor
杜健
付瑶
孙阳
杨思文
孔维成
陈易
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China Hualu Group Co Ltd
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China Hualu Group Co Ltd
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Priority to CN201511029281.4A priority Critical patent/CN105607211B/en
Publication of CN105607211A publication Critical patent/CN105607211A/en
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Publication of CN105607211B publication Critical patent/CN105607211B/en
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Classifications

    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/02Mountings, adjusting means, or light-tight connections, for optical elements for lenses
    • G02B7/023Mountings, adjusting means, or light-tight connections, for optical elements for lenses permitting adjustment
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03BAPPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00Projectors or projection-type viewers; Accessories therefor
    • G03B21/14Details
    • G03B21/142Adjusting of projection optics
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03BAPPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00Projectors or projection-type viewers; Accessories therefor
    • G03B21/14Details
    • G03B21/20Lamp housings
    • G03B21/206Control of light source other than position or intensity

Abstract

The invention discloses a lens adjusting structure and a projection optic system. The lens adjusting structure is composed of a lens holder, a pedestal, a first pre-tightening element, a second pre-tightening element, an adjusting spring, and a fastener. The lens holder includes an adjusting part and a support part; a first guide hole and a second guide hole that are formed in the two sides of the support part are arranged on the adjusting part; and a first butt-joint element arranged between the first guide hole and the second guide hole is arranged on the lower surface of the adjusting part in a protruding mode. A first positioning element and a second positioning element are arranged on the pedestal; a penetrating opening arranged between the first positioning element and the second positioning element is formed in the pedestal; and a second butt-joint element arranged at one side of the penetrating opening is arranged in the penetrating opening. According to the invention, problems that the energy is lost and the brightness performance of the overall projection optic system is reduced due to deviation of the position of the laser convergence point relative to the phosphor coating of the fluorescence color wheel in the existing optical system can be solved.

Description

Lens are adjusted structure and projection optical system
Technical field
The present invention relates to a kind of optical element and adjust structure and there is this kind of optical element the optical system of adjusting structureSystem, is specially a kind of lens and adjusts structure and projection optical system.
Background technology
The system that optical system is made up of according to a graded multiple optical element, is generally used for imaging or workOptical treatment, can meet a series of requirements and obtain desirable high quality optical system is not several lightLearn the simple combination of element, often need the parameter of each optical element to carry out reasonable disposition and appropriate just definiteCan realize. In prior art, because the aspects such as the Calculation of Optical Path, mechanical processing technique and assembly technology are broughtError, often can cause the deviation of optical system in light path, and then affect the performance of optical system. ThoroughlyMirror is as the important optical element in optical system, and it is very large whether its positional precision well directly has light pathImpact. Fig. 9 shows the position between laser and the fluorescence colour wheel 5 being converged by lens 36 under theory statePut and be related to schematic diagram, shown in figure 9, under theory state, the laser that lens 36 converge just convergesGather on the fluorescent coating of fluorescence colour wheel 5, Figure 10 and Figure 11 show lens 36 under practical situationsPosition relationship schematic diagram between the laser converging and fluorescence colour wheel 5, shown in Figure 10 and Figure 11,In actual applications, due to the impact of the above-mentioned various errors of mentioning, laser converge focus relative fluorescence lookThe position of the fluorescent coating of wheel 5 always has certain deviation, and then causes the lasing efficiency deficiency of fluorescent material,The energy loss of optical system can increase, and the brightness characteristics of whole projection optical system declines.
Projecting apparatus is a kind ofly image or video can be projected to the equipment on curtain, determines the pass of projection qualityKey is often the opticator of projecting apparatus, and there are the following problems for projection optical system of the prior art:The position of converging the fluorescent coating of focus relative fluorescence colour wheel due to laser always has certain deviation, fluorescenceThe lasing efficiency deficiency of powder, the energy loss of projection optical system can increase, whole projection optical system brightDegree hydraulic performance decline.
Summary of the invention
The present invention is directed to the proposition of above problem, adjust structure and projection optical system and develop a kind of lens.
Technological means of the present invention is as follows:
A kind of lens are adjusted structure, comprising: lens carrier, pedestal, the first preload piece, the second preload piece,Adjust spring and securing member;
Described lens carrier comprises the adjustment part of horizontal positioned and is vertically placed on the support on described adjustment partPortion; Described lens press fixing by annular preform and described support portion; On described adjustment part, have respectively and establishPut the first pilot hole and the second pilot hole in both sides, described support portion; Prominent on the lower surface of described adjustment partGo out to be provided with the first interfacing part between the first pilot hole and the second pilot hole;
Described adjustment part is placed on described pedestal in the mode that can load and unload; On described pedestal, there is the first locationPart and the second keeper; On described pedestal, offer passing through between the first keeper and the second keeperOpen up mouth; In described pass through openings, be provided with the second interfacing part that is positioned at pass through openings one side; When described lensThe adjustment part of support is placed on described pedestal, and described the first keeper is placed in described the first pilot hole, instituteState the second keeper and be placed in described the second pilot hole, described the first interfacing part through described pass through openings and withDescribed the second interfacing part is oppositely arranged; Described adjustment spring is placed in described the first interfacing part and described the second dockingBetween part; By the first preload piece and the second preload piece respectively be placed in the first pilot hole the first keeper,The second keeper that is placed in the second pilot hole is connected, and then passes the first interfacing part and tune by securing memberAfter whole spring, be connected with the second interfacing part;
Further, the length of described the first pilot hole is greater than the length of described the first keeper, and described firstKeeper can move along the length direction of described the first pilot hole; The length of described the second pilot hole is greater than instituteState the length of the second keeper, described the second keeper can move along the length direction of described the second pilot hole;
Further, be provided with position instruction unit on described pedestal upper surface, this position instruction unit is used for instituteStating the initial position that adjustment part is placed on described pedestal positions;
Further, by regulating the position of the first keeper in the first pilot hole, the second keeperPosition in two pilot holes, and regulate the relative distance between the first interfacing part and the second interfacing part, changeBecome the position of described lens;
Further, described pedestal upper surface and described adjustment part lower surface are burnishing surface.
A kind of projection optical system, comprising:
For sending the LASER Light Source of blue laser;
Converge to first of the first reflection and transmission optical system for the blue laser that described LASER Light Source is sentConverge optical system;
Be transmitted through second and converge optical system for converging by described first blue laser that optical system convergesThe first reflection and transmission optical system of system;
Second converges optical system; The blue laser of being come by the first reflection and transmission optical system transmission is throughTwo converge optical system converges to fluorescence colour wheel; Described second converges optical system at least comprises 1 lens;The lens that described lens have described in above-mentioned any one are adjusted structure;
Fluorescence colour wheel; Converge by second the blue laser that optical system converges and see through described fluorescence colour wheel,And be incident to the first completely reflecting mirror; Converge blue laser that optical system converges as exciting light by secondIrradiate described fluorescence colour wheel, make described fluorescence colour wheel send green fluorescence and red fluorescence;
Be used for the first completely reflecting mirror of blue laser total reflection to the second completely reflecting mirror of incident;
Be used for the second completely reflecting mirror of blue laser total reflection to the second reflection and transmission optical system of incident;
The second reflection and transmission optical system; Described the second reflection and transmission optical system will be via the second completely reflecting mirrorThe blue laser that total reflection is come reflexes to the 3rd and converges optical system;
Converge to the of optical tunnel for blue laser that described the second reflection and transmission optical system is reflected backThree converge optical system;
Optical tunnel; Converge blue laser that optical system converges through optical tunnel all after light by the described the 3rdBe incident to speculum;
Speculum; The uniform blue laser that is incident to described speculum enters TIR prism after reflection;
TIR prism; After the catadioptric of the blue laser that enters TIR prism by TIR prism, be irradiated to numeral micro-Mirror device;
And DMD; Be irradiated to blue laser on described DMD micro-through described numeralAfter mirror device, again reflex to TIR prism, finally enter projection lens;
The green fluorescence that fluorescence colour wheel sends and red fluorescence through second converge arrive after optical system first anti-Penetrate transmission optics system, then reflex to the second reflection and transmission optics through described the first reflection and transmission optical systemSystem; The green fluorescence being reflected back by the first reflection and transmission optical system and red fluorescence are by the second reflectionTransmission optics system is transmitted through the 3rd and converges optical system, then through the 3rd converge arrive after optical system evenOptical wand; Converge by the described the 3rd green fluorescence and red fluorescence that optical system converges equal through optical tunnelAfter light, be incident to speculum; Be incident to uniform green fluorescence and the reflection of red fluorescence process of described speculumAfter enter TIR prism, enter the green fluorescence of TIR prism and red fluorescence by the catadioptric of TIR prismAfter be irradiated to DMD; Be irradiated to green fluorescence and red fluorescence warp on described DMDAfter crossing described DMD, again reflex to TIR prism, finally enter projection lens;
Further, described projection optical system also comprises:
Be placed in the first relay optical system between described fluorescence colour wheel and the first completely reflecting mirror; Through described fluorescenceThe blue laser that colour wheel sees through transfers to the first completely reflecting mirror by the first relay optical system;
Be placed in the second relay optical system between the first completely reflecting mirror and the second completely reflecting mirror; Be all-trans by firstPenetrate the blue laser that mirror total reflection comes and transfer to the second completely reflecting mirror by the second relay optical system;
Further, described projection optical system also comprises: be placed in the second completely reflecting mirror and the second reflection and transmissionThe 3rd relay optical system between optical system; The blue laser of being come by the second completely reflecting mirror total reflection is logicalCross the 3rd relay optical system and transfer to the second reflection and transmission optical system;
Further, described projection optical system also comprises: be placed in the 4th between optical tunnel and speculumOptical system continues; The uniform blue laser forming after optical tunnel is by the 4th relay optical system transmissionTo speculum; The uniform green fluorescence forming after optical tunnel and red fluorescence are by the 4th relay opticalSystem transfers to speculum;
Further, described projection optical system also comprises: be placed in the 5th between speculum and TIR prismRelay optical system; The blue laser being reflected back by speculum transfers to TIR by the 5th relay optical systemPrism; The green fluorescence being reflected back by speculum and red fluorescence transfer to by the 5th relay optical systemTIR prism.
Owing to having adopted technique scheme, lens provided by the invention are adjusted structure and projection optical system,Can adjust corresponding lens position, correct the Calculation of Optical Path, mechanical processing technique and assembly technology etc.The error that aspect is brought, can be very helpful to the raising of Performance of Optical System; The present invention is simple in structure,Use parts few, adjust structure outside the light path of optical system, can prevent the light pair that is in course of adjustmentOperating personnel produce injury, and scioptics are adjusted the adjustment of structure, make second to converge optical system and convergedThe blue laser coming can just converge on the fluorescent coating of fluorescence colour wheel, has ensured the laser of fluorescent materialEfficiency, has avoided the position of existing optical system due to the fluorescent coating of laser convergence focus relative fluorescence colour wheelPut and have deviation, the problem that the energy loss causing and the brightness characteristics of whole projection optical system decline.
Brief description of the drawings
Fig. 1 and Fig. 2 are the structural representations that lens of the present invention are adjusted structure;
Fig. 3 and Fig. 4 are the structural representations of pedestal of the present invention;
Fig. 5 and Fig. 6 are the structural representations of lens carrier of the present invention;
Fig. 7 is the structural representation of projection optical system of the present invention;
Fig. 8 is that the present invention second converges the operation principle between the included lens of optical system and fluorescence colour wheelSchematic diagram;
Fig. 9 is that the position relationship between laser and the fluorescence colour wheel being converged by lens under theory state is illustratedFigure;
Figure 10 and Figure 11 are between the laser and fluorescence colour wheel being converged by lens under practical situationsPosition relationship schematic diagram;
Figure 12 is the structural representation of fluorescence colour wheel of the present invention.
In figure: 1, LASER Light Source, 2, first converge optical system, and 3, the first reflection and transmission optical system,4, second converge optical system, 5, fluorescence colour wheel, 6, the first relay optical system, 7, the first total reflectionMirror, 8, the second relay optical system, 9, the second completely reflecting mirror, 10, the 3rd relay optical system, 11,The second reflection and transmission optical system, 12, the 3rd converge optical system, and 13, optical tunnel, 14, the 4th relayingOptical system, 15, speculum, 16, the 5th relay optical system, 17, TIR prism, 18, digital micro-mirrorDevice, 19, projection lens, 20, adjustment part, 21, support portion, 22, annular preform, 23, first leadXiang Kong, 24, the second pilot hole, 25, the first interfacing part, 26, the first keeper, 27, the second keeper,28, pass through openings, 29, the second interfacing part, 30, the first preload piece, 31, the second preload piece, 32, tightFirmware, 33, position instruction unit, 34, adjust spring, 35, pedestal, 36, lens, 57, blue light transmissionRegion, 58, red fluorescence powder region, 59, green light fluorescent powder region, B, blue laser, R, red glimmeringLight, G, green fluorescence.
Detailed description of the invention
As shown in Figure 1, Figure 2, a kind of lens shown in Fig. 3, Fig. 4, Fig. 5 and Fig. 6 adjust structure, comprising:Lens carrier, pedestal 35, the first preload piece 30, the second preload piece 31, adjustment spring 34 and securing member 32;Described lens carrier comprises the adjustment part 20 of horizontal positioned and is vertically placed on the support on described adjustment part 20Portion 21; Described lens 36 press fixing by annular preform 22 and described support portion 21; Described adjustment partOn 20, there is the first pilot hole 23 and the second pilot hole 24 that are separately positioned on 21 both sides, described support portion; ?Outstanding being provided with between the first pilot hole 23 and the second pilot hole 24 on the lower surface of described adjustment part 20The first interfacing part 25; Described adjustment part 20 is placed on described pedestal 35 in the mode that can load and unload; DescribedOn pedestal 35, there is the first keeper 26 and the second keeper 27; On described pedestal 35, offer and be positioned atPass through openings 28 between positioning piece 26 and the second keeper 27; In described pass through openings 28, be provided with positionIn the second interfacing part 29 of pass through openings 28 1 sides; Described in the adjustment part 20 of described lens carrier is placed onOn pedestal 35, described the first keeper 26 is placed in described the first pilot hole 23, described the second keeper 27Be placed in described the second pilot hole 24, described the first interfacing part 25 is through described pass through openings 28 and with describedThe second interfacing part 29 is oppositely arranged; Described adjustment spring 34 is placed in described the first interfacing part 25 and described secondBetween interfacing part 29; By the first preload piece 30 and the second preload piece 31 respectively be placed in the first pilot hole 23In the first keeper 26, the second keeper 27 that is placed in the second pilot hole 24 be connected, then pass throughSecuring member 32 is connected with the second interfacing part 29 with after adjustment spring 34 through the first interfacing part 25; Enter oneStep ground, the length of described the first pilot hole 23 is greater than the length of described the first keeper 26, and described first is fixedPosition part 26 can move along the length direction of described the first pilot hole 23; The length of described the second pilot hole 24Be greater than the length of described the second keeper 27, described the second keeper 27 can be along described the second pilot hole 24Length direction move; Further, on described pedestal 35 upper surfaces, be provided with position instruction unit 33, this positionPutting instruction unit 33 positions for the initial position that described adjustment part 20 is placed on described pedestal 35;Further, by regulating position, second keeper 27 of the first keeper 26 in the first pilot hole 23Position in the second pilot hole 24, and regulate the phase between the first interfacing part 25 and the second interfacing part 29Adjust the distance, change the position of described lens 36; Further, described pedestal 35 upper surfaces and described tuneWhole 20 lower surfaces are burnishing surface.
A kind of projection optical system as shown in Figure 7, comprising: for sending the LASER Light Source 1 of blue laser;Converge to first of the first reflection and transmission optical system 3 for the blue laser that described LASER Light Source 1 is sentConverge optical system 2; Be transmitted through for converging by described first blue laser that optical system 2 convergesTwo converge the first reflection and transmission optical system 3 of optical system 4; Second converges optical system 4; Anti-by firstPenetrating blue laser that 3 transmissions of transmission optics system come converges optical system 4 through second and converges to iridescentWheel 5; Described second converges optical system 4 at least comprises 1 lens 36; Described lens 36 have above-mentionedLens described in one are adjusted structure; Fluorescence colour wheel 5; Converge by second the blueness that optical system 4 convergesLaser sees through described fluorescence colour wheel 5, and is incident to the first completely reflecting mirror 7; Converging optical system 4 by second convergesPoly-blue laser of coming irradiates described fluorescence colour wheel 5 as exciting light, makes described fluorescence colour wheel 5 send greenLook fluorescence and red fluorescence; First complete for by blue laser total reflection to the second completely reflecting mirror 9 of incidentSpeculum 7; Second complete for by blue laser total reflection to the second reflection and transmission optical system 11 of incidentSpeculum 9; The second reflection and transmission optical system 11; Described the second reflection and transmission optical system 11 will be viaThe blue laser that two completely reflecting mirror 9 total reflections are come reflexes to the 3rd and converges optical system 12; Described in inciting somebody to actionThe blue laser that the second reflection and transmission optical system 11 reflects back converges to the 3rd of optical tunnel 13 and converges lightSystem 12; Optical tunnel 13; Converging by the described the 3rd the blue laser that optical system 12 converges passes throughOptical tunnel 13 is all incident to speculum 15 after light; Speculum 15; Be incident to the uniform of described speculum 15Blue laser enters TIR prism 17 after reflection; TIR prism 17; The blueness that enters TIR prism 17 swashsAfter the catadioptric of light by TIR prism 17, be irradiated to DMD 18; With DMD 18;Be irradiated to blue laser on described DMD 18 again anti-after described DMD 18Be incident upon TIR prism 17, finally enter projection lens 19; The green fluorescence that fluorescence colour wheel 5 sends and red glimmeringLight arrives the first reflection and transmission optical system 3 after second converges optical system 4, then through described first anti-Penetrate transmission optics system 3 and reflex to the second reflection and transmission optical system 11; By the first reflection and transmission optical system3 green fluorescences that reflect back and red fluorescence are transmitted through the 3rd remittance by the second reflection and transmission optical system 11Poly-optical system 12 then arrives optical tunnel 13 after the 3rd converges optical system 12; By the described the 3rdConverging green fluorescence and the red fluorescence that optical system 12 converges is all incident to after light through optical tunnel 13Speculum 15; The uniform green fluorescence and the red fluorescence that are incident to described speculum 15 enter after reflectionTIR prism 17, the green fluorescence and the red fluorescence that enter TIR prism 17 pass through the catadioptric of TIR prism 17After penetrating, be irradiated to DMD 18; Be irradiated to green fluorescence and redness on described DMD 18Fluorescence again reflexes to TIR prism 17 after described DMD 18, finally enters projection lens19; Further, described projection optical system also comprises: be placed in described fluorescence colour wheel 5 and the first total reflectionThe first relay optical system 6 between mirror 7; The blue laser seeing through through described fluorescence colour wheel 5 passes through in firstThe optical system that continues 6 transfers to the first completely reflecting mirror 7; Be placed in the first completely reflecting mirror 7 and the second completely reflecting mirror 9 itBetween the second relay optical system 8; The blue laser of being come by the first completely reflecting mirror 7 total reflections passes through in secondThe optical system that continues 8 transfers to the second completely reflecting mirror 9; Further, described projection optical system also comprises: putThe 3rd relay optical system 10 between the second completely reflecting mirror 9 and the second reflection and transmission optical system 11; ByThe blue laser that the second completely reflecting mirror 9 total reflections are come transfers to second anti-by the 3rd relay optical system 10Penetrate transmission optics system 11; Further, described projection optical system also comprises: be placed in optical tunnel 13 and anti-Penetrate the 4th relay optical system 14 between mirror 15; The uniform blue laser forming after optical tunnel 13Transfer to speculum 15 by the 4th relay optical system 14; What after optical tunnel 13, form is green uniformlyLook fluorescence and red fluorescence transfer to speculum 15 by the 4th relay optical system 14; Further, described inProjection optical system also comprises: be placed in the 5th relay optical system between speculum 15 and TIR prism 1716; The blue laser being reflected back by speculum 15 transfers to TIR rib by the 5th relay optical system 16Mirror 17; The green fluorescence being reflected back by speculum 15 and red fluorescence are by the 5th relay optical system 16Transfer to TIR prism 17.
The present invention first converges optical system 2, second and converges optical system 4 and the 3rd and converge optical system 12Adopt the combination of convex lens and concavees lens; The first relay optical system 6, the second relay optical system 8, the 3rdRelay optical system 10 and the 4th relay optical system 14 adopt relay lens group, for completing laser beamConverge, disperse and spatial modulation; Described DMD 18 (DMD) contains digital micro-mirror array, each numberThe on off state of word micro mirror array can be controlled, and makes light obtain corresponding spatial modulation; Described the first reflectionTransmission optics system 3 adopts RG reflection DM mirror, anti-is greenly popular in blue spectroscope; Described the second reflection and transmissionOptical system 11 adopts B reflection DM mirror, i.e. anti-blue red green spectroscope thoroughly; Described LASER Light Source 1 adopts halfConductor Laser diode; Described fluorescence colour wheel 5 High Rotation Speed in use; Described securing member 32 is through firstThrough hole on interfacing part 25, described adjustment spring 34 are connected with the screwed hole on the second interfacing part 29; InstituteState the first keeper 26 and the second keeper 27 adopts Nut column; Described the first preload piece 30, the second pretensionPart 31 and securing member 32 adopt screw; Described annular preform 22 is held in described support portion 21 by screw handleOn; Described pedestal 35 can be the part shell of projection optical system. B in Fig. 7 is that dotted line represents bluenessLaser, the R side of being dotted line represents red fluorescence, G is that chain-dotted line represents green fluorescence.
Figure 12 shows the structural representation of fluorescence colour wheel 5 of the present invention, as shown in figure 12, and the present inventionDescribed fluorescence colour wheel 5 has blue light regional transmission 57, red fluorescence powder region 58 and green light fluorescent powder region59; Fig. 8 is that the present invention second converges the work between the included lens of optical system 4 36 and fluorescence colour wheel 5Make principle schematic, as shown in Figure 8, blue laser converges optical system 4 by second and converges to iridescentWheel 5, is seen through by blue transmission region, simultaneously excitated red fluorescent powder region 58 and green light fluorescent powder region 59Produce respectively red fluorescence and green fluorescence, the hot spot of assembling on fluorescent coating is less, and energy is more concentrated,The launching efficiency of fluorescent material is higher, can produce higher energy, is just finally reflected in whole optical propertyThat brightness is higher; The present invention is by configuring described lens adjustment to the second lens 36 that converge in optical system 4Structure, the position that makes blue laser converge focus is positioned on the fluorescent coating of fluorescence colour wheel 5, realizes glimmeringLight powder excites and reaches peak efficiency.
Location, guiding and the adjustment of lens carrier of the present invention is all parallel with the optical path direction of optical system,Particularly, with the axially parallel of lens 36, the first keeper 26 and the second keeper that on pedestal 35, have27, the first pilot hole 23 and the second pilot hole 24 on corresponding described adjustment part 20, rises axially directed respectivelyEffect; The first interfacing part 25 through pass through openings 28 is oppositely arranged with described the second interfacing part 29, and logicalCross mounting fastener 32 and regulate securing member 32 to change the first interfacing part 25 and described the second interfacing part 29Relative distance. Concrete lens 36 adjustment processes are followed successively by: lens carrier are mounted on pedestal 35,Make adjustment part 20 be placed on the initial position on described pedestal 35 according to the mark of position instruction unit 33, logicalCross the first preload piece 30 and be connected with the first keeper 26 that is placed in the first pilot hole 23, pre-by secondTight part 31 is connected with the second keeper 27 that is placed in the second pilot hole 24, carries out pre-pressing, makes lensSupport and pedestal 35 can relative motion but and not exclusively fastening, connect the first interfacing part by securing member 3225 and second interfacing part 29, turn Fastener 32, realizes lens carrier and axially finely tunes, after having adjusted, completeComplete urgent the first preload piece 30 and the second preload piece 31, the final position of fixed lens support; Described pedestal35 upper surfaces and described adjustment part 20 lower surfaces are burnishing surface, to ensure the continuous of lens carrier adjustment actionSmooth; The first preload piece 30 and the second preload piece 31 are taken into account pretension and fixing effect.
Lens provided by the invention are adjusted structure and projection optical system, can carry out corresponding lens positionAdjust, correct the error that the aspects such as the Calculation of Optical Path, mechanical processing technique and assembly technology are brought, to opticsThe raising of systematic function can be very helpful; The present invention is simple in structure, use parts are few, adjust structure existsOutside the light path of optical system, the light that can prevent from being in course of adjustment produces injury to operating personnel, passes throughLens are adjusted the adjustment of structure, make second to converge the blue laser that optical system converges and can just convergeGather on the fluorescent coating of fluorescence colour wheel, ensured the lasing efficiency of fluorescent material, avoided existing optical systemSystem is because the position of the fluorescent coating of laser convergence focus relative fluorescence colour wheel exists deviation, the energy causingThe problem that the brightness characteristics of amount loss and whole projection optical system declines.
The above, be only preferably detailed description of the invention of the present invention, but not office of protection scope of the present inventionBe limited to this, any be familiar with those skilled in the art the present invention disclose technical scope in, according to thisThe technical scheme of invention and inventive concept thereof are equal to replaces or changes, and all should be encompassed in protection of the present inventionWithin scope.

Claims (10)

1. lens are adjusted a structure, it is characterized in that described lens adjustment structure comprises: lens carrier, baseSeat, the first preload piece, the second preload piece, adjustment spring and securing member;
Described lens carrier comprises the adjustment part of horizontal positioned and is vertically placed on the support on described adjustment partPortion; Described lens press fixing by annular preform and described support portion; On described adjustment part, have respectively and establishPut the first pilot hole and the second pilot hole in both sides, described support portion; Prominent on the lower surface of described adjustment partGo out to be provided with the first interfacing part between the first pilot hole and the second pilot hole;
Described adjustment part is placed on described pedestal in the mode that can load and unload; On described pedestal, there is the first locationPart and the second keeper; On described pedestal, offer passing through between the first keeper and the second keeperOpen up mouth; In described pass through openings, be provided with the second interfacing part that is positioned at pass through openings one side; When described lensThe adjustment part of support is placed on described pedestal, and described the first keeper is placed in described the first pilot hole, instituteState the second keeper and be placed in described the second pilot hole, described the first interfacing part through described pass through openings and withDescribed the second interfacing part is oppositely arranged; Described adjustment spring is placed in described the first interfacing part and described the second dockingBetween part; By the first preload piece and the second preload piece respectively be placed in the first pilot hole the first keeper,The second keeper that is placed in the second pilot hole is connected, and then passes the first interfacing part and tune by securing memberAfter whole spring, be connected with the second interfacing part.
2. lens according to claim 1 are adjusted structure, it is characterized in that the length of described the first pilot holeDegree is greater than the length of described the first keeper, and described the first keeper can be along the length of described the first pilot holeDirection moves; The length of described the second pilot hole is greater than the length of described the second keeper, described the second locationPart can move along the length direction of described the second pilot hole.
3. lens according to claim 1 are adjusted structure, it is characterized in that establishing on described pedestal upper surfaceBe equipped with position instruction unit, this position instruction unit is for being placed on the initial bit on described pedestal to described adjustment partPut and position.
4. lens according to claim 1 are adjusted structure, it is characterized in that by regulating the first keeperPosition in the first pilot hole, the position of the second keeper in the second pilot hole, and regulate first pairRelative distance between fitting and the second interfacing part, changes the position of described lens.
5. lens according to claim 1 are adjusted structure, it is characterized in that described pedestal upper surface and instituteState adjustment part lower surface and be burnishing surface.
6. a projection optical system, is characterized in that described projection optical system comprises:
For sending the LASER Light Source of blue laser;
Converge to first of the first reflection and transmission optical system for the blue laser that described LASER Light Source is sentConverge optical system;
Be transmitted through second and converge optical system for converging by described first blue laser that optical system convergesThe first reflection and transmission optical system of system;
Second converges optical system; The blue laser of being come by the first reflection and transmission optical system transmission is throughTwo converge optical system converges to fluorescence colour wheel; Described second converges optical system at least comprises 1 lens;The lens that described lens have described in claim 1 to 5 any one are adjusted structure;
Fluorescence colour wheel; Converge by second the blue laser that optical system converges and see through described fluorescence colour wheel,And be incident to the first completely reflecting mirror; Converge blue laser that optical system converges as exciting light by secondIrradiate described fluorescence colour wheel, make described fluorescence colour wheel send green fluorescence and red fluorescence;
Be used for the first completely reflecting mirror of blue laser total reflection to the second completely reflecting mirror of incident;
Be used for the second completely reflecting mirror of blue laser total reflection to the second reflection and transmission optical system of incident;
The second reflection and transmission optical system; Described the second reflection and transmission optical system will be via the second completely reflecting mirrorThe blue laser that total reflection is come reflexes to the 3rd and converges optical system;
Converge to the of optical tunnel for blue laser that described the second reflection and transmission optical system is reflected backThree converge optical system;
Optical tunnel; Converge blue laser that optical system converges through optical tunnel all after light by the described the 3rdBe incident to speculum;
Speculum; The uniform blue laser that is incident to described speculum enters TIR prism after reflection;
TIR prism; After the catadioptric of the blue laser that enters TIR prism by TIR prism, be irradiated to numeral micro-Mirror device;
And DMD; Be irradiated to blue laser on described DMD micro-through described numeralAfter mirror device, again reflex to TIR prism, finally enter projection lens;
The green fluorescence that fluorescence colour wheel sends and red fluorescence through second converge arrive after optical system first anti-Penetrate transmission optics system, then reflex to the second reflection and transmission optics through described the first reflection and transmission optical systemSystem; The green fluorescence being reflected back by the first reflection and transmission optical system and red fluorescence are by the second reflectionTransmission optics system is transmitted through the 3rd and converges optical system, then through the 3rd converge arrive after optical system evenOptical wand; Converge by the described the 3rd green fluorescence and red fluorescence that optical system converges equal through optical tunnelAfter light, be incident to speculum; Be incident to uniform green fluorescence and the reflection of red fluorescence process of described speculumAfter enter TIR prism, enter the green fluorescence of TIR prism and red fluorescence by the catadioptric of TIR prismAfter be irradiated to DMD; Be irradiated to green fluorescence and red fluorescence warp on described DMDAfter crossing described DMD, again reflex to TIR prism, finally enter projection lens.
7. projection optical system according to claim 6, also is characterized in that described projection optical systemComprise:
Be placed in the first relay optical system between described fluorescence colour wheel and the first completely reflecting mirror; Through described fluorescenceThe blue laser that colour wheel sees through transfers to the first completely reflecting mirror by the first relay optical system;
Be placed in the second relay optical system between the first completely reflecting mirror and the second completely reflecting mirror; Be all-trans by firstPenetrate the blue laser that mirror total reflection comes and transfer to the second completely reflecting mirror by the second relay optical system.
8. projection optical system according to claim 6, also is characterized in that described projection optical systemComprise: be placed in the 3rd relay optical system between the second completely reflecting mirror and the second reflection and transmission optical system;The blue laser of being come by the second completely reflecting mirror total reflection transfers to the second reflection by the 3rd relay optical systemTransmission optics system.
9. projection optical system according to claim 6, also is characterized in that described projection optical systemComprise: be placed in the 4th relay optical system between optical tunnel and speculum; What after optical tunnel, form is equalEven blue laser transfers to speculum by the 4th relay optical system; What after optical tunnel, form is evenGreen fluorescence and red fluorescence transfer to speculum by the 4th relay optical system.
10. projection optical system according to claim 6, is characterized in that described projection optical systemAlso comprise: be placed in the 5th relay optical system between speculum and TIR prism; Reflected back by speculumBlue laser transfer to TIR prism by the 5th relay optical system; The green being reflected back by speculumFluorescence and red fluorescence transfer to TIR prism by the 5th relay optical system.
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