CN101495917B - Optical projection subsystem - Google Patents
Optical projection subsystem Download PDFInfo
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- CN101495917B CN101495917B CN2007800286308A CN200780028630A CN101495917B CN 101495917 B CN101495917 B CN 101495917B CN 2007800286308 A CN2007800286308 A CN 2007800286308A CN 200780028630 A CN200780028630 A CN 200780028630A CN 101495917 B CN101495917 B CN 101495917B
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Abstract
A projection subsystem includes a light engine that provides a collection lens, a collimator and at least one solid state light emitter. A projection lens assembly receives the image and provides a projection beam having a luminous flux level. The projection subsystem has a portability efficacy.
Description
CROSS-REFERENCE TO RELATED PATENT
The application based on and require the right of priority of following U.S. Provisional Patent Application: the U.S. Provisional Patent Application sequence number of submitting on July 31st, 2,006 60/820,894, it incorporates this paper in full by reference into; The sequence number of submitting on July 31st, 2,006 60/820,887, it incorporates this paper in full by reference into; The sequence number of submitting on July 31st, 2,006 60/820,888, it incorporates this paper in full by reference into; The sequence number of submitting on July 31st, 2,006 60/820,883, it incorporates this paper in full by reference into; The sequence number of submitting on August 1st, 2,006 60/821,032, it incorporates this paper in full by reference into; The sequence number of submitting on August 21st, 2,006 60/838,988, it incorporates this paper in full by reference into; And the sequence number of submitting on July 2nd, 2,007 11/772609, it incorporates this paper in full by reference into.
Background technology
Optical projector is used to project image onto the surface, watches in groups people.Optical projector comprises the optical projector subsystem, and this optical projector subsystem comprises lens, light filter, polarizer, light source, imaging device etc.The electronic projection apparatus that install known front and back can be used for education, home theater and business meetings purposes.Known luminaire comprises blackbody lamp, gas-discharge lamp, and the Solid State Source such as laser, light emitting diode (LED) and Organic Light Emitting Diode (OLED).Known head head mounted displays (HMD) can use separately.For removable application, expectation makes optical projector miniaturization aspect two of volume and thickness, and the electric energy that makes them when keeping low-power consumption, low cost and high image quality extremely effectively.Yet, the large scale of existing optical projection subsystem and high power consumption constraints develop the effort of real portable projector.Need provide miniaturization and high-level efficiency and with the method and the optical projection subsystem of cost effective manner projection qualitative picture.
Summary of the invention
The invention discloses a kind of projection subsystem.This projection subsystem comprises provides illumination subsystems incoherent, uniform beam.This illumination subsystems comprises light collecting lens, collimator and at least one solid-state light emitters.This solid-state light emitters receives electrical power level and can be connected to heating radiator.
Projection subsystem comprises imaging device.This imaging device receives view data and light beam.Imaging device provides image to refractile body.
Projection subsystem comprises the projecting lens assembly.This projecting lens assembly receives the image from refractile body, and the bundle of the image projection with luminous flux level is provided.
According to an aspect, this projection subsystem has portable effect, comprises less than 14 cubic centimetres volume and less than 14 millimeters thickness.
Description of drawings
Fig. 1 is the curve Figure 100 of observational measurement that shows the portable effect of projection subsystem.
Fig. 2 shows projection subsystem.
Fig. 3 A shows the projection subsystem that comprises anamorphic optical device.
Fig. 3 B shows the projection subsystem that comprises the deformation plance on the refractile body.
Fig. 4 shows the oblique view of the projection subsystem of Fig. 3 A.
Fig. 5 A, Fig. 5 B show and comprise that blueness stops the part of the projection subsystem of light filter.
Fig. 5 C, Fig. 5 D show the part of the projection subsystem that comprises the polarizing filter that changes picture contrast.
Fig. 6 shows the projection subsystem with panel radiator.
Fig. 7 shows the projection subsystem that comprises light recycle.
Fig. 8 shows the projection subsystem that comprises shell.
Fig. 9 shows the oblique view of projection subsystem.
Figure 10 A shows light emitting diode.
Figure 10 B shows the image that the light that passes through optical system by the emission of the light emitting diode of Figure 10 A forms.
Figure 11 A, Figure 11 B, Figure 11 C, Figure 11 D show the example of mounting optical component in projection subsystem.
Figure 12 A, Figure 12 B show alternative embodiment of projection subsystem.
Embodiment
Use for moving, wish that the projection diagonal line is 12 centimetres or bigger image, under the situation of ambienting lighting,, will need the luminous flux and at least 30 of at least 3 lumens usually: 1 contrast ratio for good visuality.Provide other desired feature of excellent images quality can comprise a large amount of resolvable picture elements, wide colour gamut, and the image homogeneity.
Use for moving, " portable effect " can be defined as the combination metric of the small size to projection subsystem, high effect and high luminous output.Fig. 1 is the curve Figure 100 of two aspects that shows the portable effect of projection subsystem.Term " projection subsystem " relates to light source, imaging device and refractive optical components that is associated or reflection optics (for example lens, reflective mirror), or is used to provide the beam splitter of projection optics image.When the longitudinal axis 102 expression is applied to light source with 1 watt electric power, the lumen number of the power efficiency of projection subsystem.The volume of transverse axis 104 expression projection subsystems.Portable effect 108 increases along with the increase of efficient, and increases along with reducing of volume.When the higher and volume of power efficiency more hour, the portability of projection subsystem increases.
The desired characteristics of projection subsystem comprises the luminous flux of the middle-and-high-ranking number of projected image, big screen size, high contrast, big amount of pixels and wide colour gamut.Fig. 1 shows a kind of approach of some features in these features of comparison different optical system.As described in present the disclosed embodiments, the projection subsystem with incoherent light source can provide the useful combination of desired characteristics.
As shown in Figure 1, power efficiency and the size of the representational conventional A of projection subsystem, C, D and E have been carried out assessing and drawing on curve Figure 100.Subsystem A and C are being better than giving D of system and E usually aspect power efficiency and the size, but the above two use the coherent laser source, and the coherent laser source has especially under the situation of electric fault or mechanical fault the defective of expensive, the low image quality that is caused by laser speckle and potential eye-safe problem.Subsystem D and E use incoherent led light source, and it can overcome the defective based on the system of laser, but they are relatively large, power efficiency is relatively low or the two exists simultaneously and causes limited portable effect.Exemplary projection subsystem of the present invention is depicted as the B of projection subsystem on curve Figure 100, and this subsystem uses incoherent light source and has than littler size of subsystem D and E and the efficient of Geng Gao.
When with the projector design miniaturization or when scaled, the ambient light level in the projection environment can be not scaled.For when having surround lighting for the beholder of colony provides enough bright projected image, need enough projection light power levels.For example, if with the compact in size of light emitting source, (for example) also is applied to less light emitting source with identical electrical power level, then should understand occurrence temperature rising by less light emitting source, and it is overheated to cause.For scaled electrical power level to avoid making small-sized light emitting source overheated and do not reduce the luminous flux of projected image output, need to optimize the optical efficiency of projector optics device.The high power solid-state laser of the coherent light of collimation can improve power efficiency though can effectively produce highly, uses coherent light can produce speckle, reduces the picture quality of projection.And use laser can increase the misgivings about eye-safe, especially under the situation of electric fault or mechanical fault.
As described in the embodiment that describes below, optics is with improved combine and assemble, to reach the high light flux level with low electric power level desired in the micro projection subsystem.Avoid using coherent source.The portable effect of projection subsystem is strengthened.Particularly, many optical losss that can take place usually during by the air between the optics of conventional projector have been avoided when light.
Projection subsystem disclosed herein can operation in having the zone 110 high portability effect, among curve Figure 100.Zone 110 volume is limited to and is not more than 14 cubic centimetres and efficient and is not less than 3.8 lumens/1 watt.
Another module of portable effect comprises the thickness of projection subsystem along its thinnest axle.When projection subsystem when thickness axis has less than 14 millimeters thickness, this projection subsystem is best suited for pocket portable device.Portable effect be luminous flux on the other hand.When luminous flux is at least 3 Lhr.s, projection subsystem is best suited for pocket portable device.
Fig. 2 shows projection subsystem 200.Projection subsystem 200 can be used for rest image or the video image of projection from miniature electronic system (for example mobile phone, PDA(Personal Digital Assistant), GPS (GPS) receiver).Electric energy and view data that projection subsystem 200 receives from miniature electronic system (not shown among Fig. 2), this projection subsystem is embedded in this miniature electronic system.Projection subsystem 200 can be used as the assembly of the micro projector annex that is used to show computer video.Projection subsystem 200 can be used for enough little so that in the system of carrying, and when not in use, can put it into the pocket of clothes, for example the pocket of shirt.Can with by the image projection of projection subsystem's 200 projections to the reflective projection screen, on the wall of light colour, on the blank or on the paper or on other known projecting plane.For example, projection subsystem 200 can embed in the portable computer (for example laptop computer or mobile phone).
Solid-state light emitters 210 receives the power supply 212 with electrical power level.Solid-state light emitters 210 is thermally coupled to heating radiator 214.This solid-state light emitters provides the light beam of the emission with transmitter luminous flux level.According to an aspect, light beam 204 comprises incoherent light.According to another aspect, light beam 204 comprises the illumination of the part focusedimage of solid-state light emitters 210.According to another aspect, solid-state light emitters 210 comprises one or more light emitting diodes (LED).According to another aspect, light collecting lens 206 comprises packaged lens.According to another aspect, collimator 208 comprises focalizer, this focalizer comprises: first Fresnel lens with the first non-faceted side and first faceted side, this first non-faceted side is used to receive first uncollimated rays, and the first faceted side is used to launch collimated light beam; And second Fresnel lens with the second non-faceted side and second faceted side, this second non-faceted side is used for directly receiving basically collimated light beam, and the second faceted side is used for the emitting output light bundle.According to another aspect, can be as the shown solid-state light emitters 210 of arranging in the U.S. Provisional Application 60/820,883.According to another aspect, can the method shown in U.S. Provisional Application 60/820,887,60/820,888,60/821,032,60/838,988 arrange light engine 202.
According to another aspect, the electrical power level that projection subsystem 200 has is not more than 3.6 watts.According to another aspect, the volume that projection subsystem 200 has is less than 14 cubic centimetres.According to another aspect, the thickness that projection subsystem 200 has is less than 14 millimeters.
According to another aspect, the f-number that projection subsystem 200 has is less than 2.4.According to another aspect, the ANSI that this projection subsystem has (ANSI) contrast ratio is at least 30: 1.According to another aspect, the ANSI contrast ratio that this projection subsystem has is at least 50: 1.According to another aspect, the ON/OFF contrast ratio that this projection subsystem has is at least 100: 1.
Fig. 3 A shows projection subsystem 300.Projection subsystem 300 and projection subsystem 200 are similar, and different is that anamorphic optical device 302 is included in the projection subsystem 300.The reference number identical with employed reference number among Fig. 2 that uses among Fig. 3 A represented identical or similar parts.In others, projection subsystem 300 is similar to projection subsystem 200.Anamorphic optical device 302 changes the aspect ratio of light beam 304.Anamorphic optical device 302 changes beam shape so that first aspect ratio in the light engine 202 adapts to the second different aspect ratio in the refractile body 220.According to an aspect, first aspect ratio is 1: 1, and second aspect ratio is 16: 9.According to another aspect, first aspect ratio is 1: 1, and second aspect ratio is 4: 3.According to an aspect, the aspect ratio of second aspect ratio and imaging device 236 coupling.According to an aspect, anamorphic optical device 302 comprises the anamorphote lens shown in Fig. 3 A.According to another aspect shown in Fig. 3 B, the deformation plance 306 that is arranged on the refractile body 320 is used as anamorphic optical device.In others, refractile body 320 is similar to the refractile body 220 among the FIG.3A.
According to another aspect, polarizing filter can be arranged on position 330 or 332 places among Fig. 3 A.The polarizing filter at position 330 or 332 places has improved the optical contrast ratio of optical subsystem 300.According to an aspect, the polarizing filter that is arranged on 330,332 places, position comprises multi-layer optical film.
Fig. 4 shows the oblique view of the projection subsystem 300 of Fig. 3.Projection subsystem 300 has thickness 402.Projection subsystem 300 has by the cross-sectional area 400 shown in the plane of getting ready perpendicular to thickness 402.Cross-sectional area 400 comprises area component 206,208,236,220,250,302 and has intervention air space between the component of using light.The volume of projection subsystem 300 is mathematical product of thickness 402 and cross-sectional area 400.
Fig. 5 A, Fig. 5 B show the part of the projection subsystem 500,510 that is similar to projection subsystem 200 or 300.Projection subsystem 500 comprises light filter 502.Light filter 502 is adjacent with collimator 208.According to an aspect, light filter 502 comprises the optics that separates with collimator 208.According to another aspect, light filter 502 comprises the filter layer on the collimator 208.According to an aspect, collimator 208 is between light filter shown in Fig. 5 A 502 and lens 206.According to shown in Fig. 5 B on the other hand, light filter 504 is between collimator 208 and lens 206.Light filter 502,504 comprises that also the blueness of shielding of ultraviolet (UV) radiation stops light filter.When allow the part that need be present in the blue color spectrum in the projected image by the time, blueness stops that its wavelength of filter blocks is blue light and the ultraviolet light that is easy to damage the dioptrics device.Light filter 502 or 504 stops that unwanted light arrives refractile body 220.
Fig. 5 C, 5D show the part of the projection subsystem 520,540 that is similar to projection subsystem 200 or 300.Projection subsystem 520 comprises light filter 522.Light filter 522 is arranged between refractile body 220 and the projecting lens assembly 250.Projection subsystem 540 comprises refractile body 220A, and this refractile body comprises the light filter 542 of contiguous polarizing filter 224.Light filter 542 is arranged between polarizing filter 224 and the plastic resin body 230.Light filter 522,542 comprises polarizing filter.Polarizing filter 522,542 has increased the contrast of projected image.According to an aspect, projection subsystem according to Fig. 5 D is described in the U.S. Patent application (being designated patent application serial number 11/457,599) of title for " Polarizing Beam SplittersIncorporating Reflective and Absorptive Polarizers and Image DisplaySystems Thereof (adopting the polarization beam apparatus and the image display system thereof of reflection and absorptive polarizers) " to some extent.
Fig. 6 shows projection subsystem 600, and it is similar to the projection subsystem 300 among Fig. 4, and different is that this projection subsystem 600 comprises panel radiator 602, and the projection subsystem 300 among Fig. 4 comprises the have projection heating radiator 214 of (for example fin or pin).In others, projection subsystem 600 is similar to projection subsystem 300.According to an aspect, panel radiator 602 has the lower face 604 on the external packing surface that is exposed to pocket portable electronic instrument assembly (for example mobile phone, PDA(Personal Digital Assistant), GPS (GPS) or similar pocket equipment).According to another aspect, other element thermo-contact in panel radiator 602 and the electron device, thus disperse heat.According to another aspect, in the process of using, lower face 604 can be arranged as with auxiliary external heater and contact with the realization extended use.
Fig. 7 shows projection subsystem 700, and it is similar to the projection subsystem 300 among Fig. 3 A, and different is that this projection subsystem 700 comprises the light polarizing film 702 that is provided with along the optical path between light collecting lens 206 and the refractile body 220.According to an aspect, light polarizing film 702 is arranged between collimator 208 shown in Fig. 7 and the refractile body 220.Light polarizing film 702 is returned polarized light emission the reflecting surface of solid-state light emitters 210 so that light recycle to be provided.Comprise that light polarizing film 702 has increased the luminous flux of this projection subsystem.According to an aspect, polarisation recycle is described in the U.S. Patent application of submitting on July 2nd, 2,007 11/772,609 to some extent.
Fig. 8 shows the projection subsystem 800 that is similar to Fig. 3 A, 7 projection subsystem.Projection subsystem 800 comprise seal optics 206,208,702,302,220 to small part and protect optical component surfaces to avoid polluting and the shell 802 of moisture.According to an aspect, shell 802 can comprise air strainer 806.Air strainer 806 limit air flow, leach the pressure between pollutant and balance shell 802 inside and the ambient atmosphere.According to an aspect, air strainer 806 comprises the drying agent 808 that reduces shell 802 interior humidities.According to another aspect, shell 802 is used for mechanical mounting optical component.
Fig. 9 shows the projection subsystem 900 that is similar to the projection subsystem shown in Fig. 2.Projection subsystem 900 comprises the solid-state light emitters (not shown among Fig. 9) that is connected to power supply by electric wire 902,904.This solid-state light emitters is thermally coupled to heating radiator 906.Projection subsystem 900 comprises light collecting lens 908.Projection subsystem 900 comprises imaging device 912, refractile body 914 and projecting lens 916.
Figure 10 A shows the light emitting diode 1000 as exemplary solid-state light emitters, for example solid-state light emitters among Fig. 2 210.Via closing line 1002,1004 light emitting diode 1000 is connected to power supply.Light emitting diode 1000 comprises luminous zone 1008,1010,1012,1014,1016.Other zone of light emitting diode 1000 (for example zone 1018,1020,1022,1024,1026,1028) comprises that dark space, these dark spaces comprise electric conductor and can not produce light.Therefore, the image of light emitting diode 1000 is to produce the zone of light and do not produce the pattern in the zone of light.For using in projection, the brightness that it is desirable to image is even relatively, shown in Figure 10 B.According to an aspect, provide uniform luminance for having instructed in the U.S. Patent Publication 2007/0153397 of " PROJECTION SYSTEM WITH BEAMHOMOGENIZER (optical projection system) " with light beam balanced device at title.
Figure 11 A shows the example of mounting optical component in projection subsystem.Moulding part 1100 comprises the opticator 1102 along optical axis 1104, and takes shape in mounting flange part 1106 in the integrative-structure with opticator 1102.Opticator 1102 comprises lens, but any optics of this projection subsystem all can be used for replacing this lens.This moulding part by refractive material for example transparent plastic resin make.Mounting flange part 1106 has and is configured as the edge 1108,1110 that cooperates with adjacent moulding part.Can friction installation, buckle by being used for plastic resin spear mould parts install, bonding, screw thread or other known attachment method be attached to one another the edge.
Figure 11 B shows the example of mounting optical component in projection subsystem.Optics 1120 is embedded in the groove 1122,1124 of cooperation halfbody of mounting pipe 1126.A plurality of opticses are installed in this mounting pipe.Along separator bar 1128 assembling mounting pipe 1126.Opticator 1120 comprises lens, but any optics that projection subsystem can be installed similarly substitutes these lens.
Figure 11 C shows the example of mounting optical component in projection subsystem.Optics 1130 is embedded in the groove 1132 of mounting groove 1134.To cover 1136 and be fixed to this mounting groove.A plurality of opticses are installed in the mounting groove 1134.Along separator bar 1138 assembling mounting groove 1134 and lids 1136.Opticator 1130 comprises lens, and still, any optics that projection subsystem can be installed similarly substitutes these lens.
Figure 11 D shows the example with the combination of the refractile body 1150 of mounting flange edge 1152,1154,1156 moulding that are similar to those mounting flange edges shown in Figure 11 A (for example refractile body 220 of Fig. 2).
Figure 12 A, 12B show has alternative embodiment of the projection subsystem of portable effect as mentioned above.Figure 12 A shows the projection subsystem 1202 that comprises light engine 1204, imaging device 1206 and projecting lens assembly 1208.Imaging device 1206 comprises transmission imaging device.Figure 12 B shows the projection subsystem 1222 that comprises light engine 124, imaging device 1226, anamorphote lens 1228 and projecting lens assembly 1230.Imaging device 1226 is the catoptric imaging device such as can departing from the reflective mirror pel array, and this imaging device does not need to be used for the polarized light of its operation.
Example
Projection subsystem is configured to be similar to Fig. 7 and Fig. 9, and this projection subsystem has the refractile body that is similar to Fig. 3 B.Solid-state light emitters is by the blue InGaN mould of Part No. C450-EZ1000-S30000 and the White LED made by the isogonism yellow fluorophor that Cree company (NC 27703 for 4600 Silicon Drive, Durham) produces.Light collecting lens with and describe with being connected among the U.S. Patent Publication US 2007/0152231 to some extent of LED.Collimator is the Fresnel lens that has the non-faceted side that is used to receive uncollimated rays and be used to launch the faceted side of collimated light beam.Refractile body is as the molded plastics polarising beam splitter (PBS) described in the U.S. Patent Publication US 2007/0024981.Reflection polarizing film, one one is the element 702 shown in Fig. 7 in PBS, is made by 3M company (St.Paul, MN 55144), commodity are called " VIKUITI " senior light polarizing film (APF).Imaging device is the LCOS miniscope with inner red color filter, green color filter and blue color filter, and part number is HX7007ATBFA, is produced by Himax Display (No. 26 2 buildings, Zih Lian road, Shu Xiang park, TaiNan County,TaiWan, postcode 74445).
The measurement result of size and performance is summarized in the following table, and wherein IEC is the abbreviation of International Electrotechnical Commission (International Electrotechnical Commission).
Though described the present invention in conjunction with the preferred embodiments, person of skill in the art will appreciate that, can make amendment to form and details under the premise without departing from the spirit and scope of the present invention.
Claims (23)
1. projection subsystem comprises:
Light engine, it provides light beam, described light engine comprises light collecting lens, collimator and at least one solid-state incoherent light transmitter, described at least one solid-state incoherent light transmitter receipt electrical power level, and can be connected to heating radiator, and the light beam with transmitter luminous flux level is provided;
Imaging device, at least one component that it receives view data and receives described light beam, described imaging device provides image;
The projecting lens assembly, it receives described image, and the bundle of the image projection with projected luminous flux level is provided; And
Described projection subsystem has portable effect, the ratio that comprises luminous flux and electrical power level at least 3.8 lumens to 1 watt, and projection subsystem's volume is less than 14 cubic centimetres.
2. projection subsystem according to claim 1 also comprises:
The refractile body that comprises inner polarizing filter, described refractile body receive described light beam and the polarized component of described light beam are offered described imaging device.
3. projection subsystem according to claim 2, the thickness that wherein said projection subsystem has is less than 14 millimeters.
4. projection subsystem according to claim 2 also comprises at least one lens face with non-zero lens power that is close to described imaging device.
5. projection subsystem according to claim 4, wherein said lens face comprises the curved surface of described refractile body.
6. projection subsystem according to claim 2, wherein said portable effect comprises the portable effect limit that is selected from by the following group of forming: electric power is less than 3.6 watts, the projected luminous flux level is at least 7 lumens/watt with the ratio of electrical power level, and the ratio of projected luminous flux level and electrical power level is at least 10 lumens/watt.
7. projection subsystem according to claim 2 also comprises described heating radiator.
8. projection subsystem according to claim 2, wherein said refractile body comprises the plastic resin material body on the opposite side that is positioned at described inner polarizing filter.
9. projection subsystem according to claim 2, wherein said inner polarizing filter comprises multi-layer optical film.
10. projection subsystem according to claim 2 also comprises the reflective polarizer that contiguous described collimator is provided with.
11. projection subsystem according to claim 2 comprises the distortion optical surface of the aspect ratio of adjusting described image projection bundle.
12. a projection subsystem comprises:
Light engine, it provides light beam, and described light engine comprises light collecting lens, collimator and at least one solid-state incoherent light transmitter, described at least one solid-state incoherent light transmitter receipt electrical power level, and can be connected to heating radiator, and the light beam with transmitter luminous flux level is provided;
Imaging device, at least one component that it receives view data and receives described light beam, described imaging device provides image;
The projecting lens assembly, it receives described image, and the bundle of the image projection with projected luminous flux level is provided; And
Described projection subsystem has portable effect, and wherein said electrical power level is less than 3.6 watts, and projection subsystem's volume is less than 14 cubic centimetres, and projection subsystem's thickness is less than 14 millimeters.
13. projection subsystem according to claim 12, the ratio that wherein said portable effect comprises described luminous flux level and described electrical power level at least 3.8 lumens to 1 watt.
14. projection subsystem according to claim 12, wherein said light collecting lens comprises hemispherical lens.
15. projection subsystem according to claim 12, wherein the light emitting diode source comprises at least one light emitting diode in the non-homogeneous zone with high light emission and low light emission, and part focusing is full of low light emitting area to increase the irradiation homogeneity.
16. projection subsystem according to claim 12 also comprises the reflect polarized light recirculator that contiguous described collimator is provided with.
17. projection subsystem according to claim 12 comprises the distortion optical surface, described distortion optical surface receives described light beam and makes described beam-shaping to change the aspect ratio of described light beam.
18. a method comprises:
Provide light beam from light engine, described light engine comprises light collecting lens, collimator and at least one solid-state incoherent light transmitter, described at least one solid-state incoherent light transmitter receipt electrical power level, and can be connected to heating radiator, and the light beam with transmitter luminous flux level is provided;
Receive at least one component of described light beam at the imaging device place that receives view data, and provide image from described imaging device;
The place receives described image at the projecting lens assembly, and the bundle of the image projection with projected luminous flux level is provided; And
Portable effect is provided, the ratio that described portable effect comprises luminous flux and electrical power level at least 3.8 lumens to 1 watt, and projection subsystem's volume is less than 14 cubic centimetres.
19. method according to claim 18 also comprises:
Receive described light beam at the refractile body place that comprises inner polarizing filter, described refractile body offers described imaging device with the polarized component of described light beam.
20. method according to claim 18, and
Arrange described optics and select the size of described optics, so that the volume that described projection subsystem has is no more than 14 cubic centimetres.
21. method according to claim 18, and
The recycle of cremasteric reflex polarized light is to provide at least 38.5% collection efficiency ratio.
22. method according to claim 18, and
The distortion optical surface of contiguous described refractile body is provided, and described distortion optical surface limits the aspect ratio of imaging beam.
23. method according to claim 18,
The focusing adjustment that spacing is adjusted that comprises between described projecting lens assembly and the described imaging device is provided.
Applications Claiming Priority (15)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US82088706P | 2006-07-31 | 2006-07-31 | |
| US82089406P | 2006-07-31 | 2006-07-31 | |
| US82088806P | 2006-07-31 | 2006-07-31 | |
| US82088306P | 2006-07-31 | 2006-07-31 | |
| US60/820,887 | 2006-07-31 | ||
| US60/820,894 | 2006-07-31 | ||
| US60/820,883 | 2006-07-31 | ||
| US60/820,888 | 2006-07-31 | ||
| US82103206P | 2006-08-01 | 2006-08-01 | |
| US60/821,032 | 2006-08-01 | ||
| US83898806P | 2006-08-21 | 2006-08-21 | |
| US60/838,988 | 2006-08-21 | ||
| US11/772,609 | 2007-07-02 | ||
| US11/772,609 US8075140B2 (en) | 2006-07-31 | 2007-07-02 | LED illumination system with polarization recycling |
| PCT/US2007/074825 WO2008016905A1 (en) | 2006-07-31 | 2007-07-31 | Optical projection subsystem |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101495917A CN101495917A (en) | 2009-07-29 |
| CN101495917B true CN101495917B (en) | 2011-08-10 |
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ID=40925433
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007800286308A Active CN101495917B (en) | 2006-07-31 | 2007-07-31 | Optical projection subsystem |
| CN200780028791.7A Expired - Fee Related CN101495906B (en) | 2006-07-31 | 2007-07-31 | LED illumination system with polarization recycling |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200780028791.7A Expired - Fee Related CN101495906B (en) | 2006-07-31 | 2007-07-31 | LED illumination system with polarization recycling |
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| Country | Link |
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| CN (2) | CN101495917B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5504747B2 (en) * | 2009-08-20 | 2014-05-28 | セイコーエプソン株式会社 | projector |
| CN103491859B (en) * | 2011-03-02 | 2017-04-05 | 华柏恩视觉诊断公司 | fundus camera system and method |
| JP5223941B2 (en) * | 2011-03-28 | 2013-06-26 | カシオ計算機株式会社 | Projection device |
| CN107678238A (en) * | 2017-10-27 | 2018-02-09 | 扬州吉新光电有限公司 | A kind of Wavelength converter and its manufacture method |
| EP3988988A4 (en) * | 2018-09-28 | 2023-09-13 | Evident Corporation | Microscope system, projection unit, and image projection method |
| JP2021128273A (en) * | 2020-02-14 | 2021-09-02 | キヤノン株式会社 | Light source device and image projection device having the same |
-
2007
- 2007-07-31 CN CN2007800286308A patent/CN101495917B/en active Active
- 2007-07-31 CN CN200780028791.7A patent/CN101495906B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN101495906B (en) | 2012-07-04 |
| CN101495906A (en) | 2009-07-29 |
| CN101495917A (en) | 2009-07-29 |
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