CN204009344U - A kind of optical projection system with forward projection's optical screen - Google Patents
A kind of optical projection system with forward projection's optical screen Download PDFInfo
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- CN204009344U CN204009344U CN201420402424.6U CN201420402424U CN204009344U CN 204009344 U CN204009344 U CN 204009344U CN 201420402424 U CN201420402424 U CN 201420402424U CN 204009344 U CN204009344 U CN 204009344U
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Abstract
The utility model relates to a kind of optical projection system with forward projection's optical screen, Ta You forward projection screen (1) and projector (2) form, described forward projection's screen (1) comprises basalis (4), microprism array structure layer (5), metal medium minute surface reflective membrane (8) and light diffuse reflector (9), microprism array structure layer (5) is arranged at basalis (4) towards projector's (2) one sides, and microprism array structure layer (5) is comprised of bottom surface (6), projector's incident ray shadow surface (7) and ambient light absorption layer (10).The utility model has the advantage of: under bright light environments, have high-gain, high-contrast also has without surperficial dazzle and high color rendition degree simultaneously; Can optionally in micro-prism structure layer outside, stick layer protective layer, there is scratch resistance, dustproof, aging-resistant characteristic.
Description
Technical field
The utility model relates to optical projection system, particularly a kind of optical projection system with forward projection's optical screen.
Background technology
In recent years, along with the raising of the luminosity of projector own, most of projection screens need to be used in natural light or very bright environment.Problem due to know-why, with general glass bead screen, when moulding curtain, ash curtain etc. and carry out projected image in vain, black pattern on the stronger projected image of surround lighting is thereupon brighter, the contrast degradation of projected image, image color is thin out because of the surround lighting that superposeed, and causes color reducibility very undesirable.
Thereby using projection screen under bright light environments, forward projection's screen especially, solves the true reappearance ability of the color rendition performance, particularly black pattern of projected image, seems particularly important.Thereby need a kind of can true reappearance black image, under bright light environments, have forward projection's screen of high-contrast.
In existing front projection screen, U.S. utility new patent US6842282B2 adopts the structure of soot layer 101 and grating layer 102 combinations, as shown in Figure 5, utilized the traceability reflex characteristic of glass microballoon, and absorbed component environment light 108 with the blacking sidewall of grating, thereby improved the contrast of projected image.Yet the intrinsic feature of this screen microballon traceability reflex makes, and it is excessive that observer 104 departs from traceability reflex light 105 directions, and projected image brightness will sharply decline.Even in soot layer near projector's one side, increase a light diffusion layer 103, visible angle in order to expanded view as reflection ray, but parts of images reflection ray 106 can be because the absorption of grating blacking sidewall 107, reduced equally projected image display brightness, especially when short distance forward projection, luminance loss is even more serious.
Utility model content
The purpose of this utility model is to overcome the shortcoming of prior art, a kind of optical projection system with forward projection's optical screen is provided, especially provides a kind of under bright light environments, there is high-gain, high-contrast also has the forward projection's screen without surperficial dazzle and high color rendition degree simultaneously.
The purpose of this utility model is achieved through the following technical solutions: a kind of optical projection system with forward projection's optical screen, Ta You forward projection screen and projector form, described forward projection's screen comprises basalis, microprism array structure layer, metal medium minute surface reflective membrane and light diffuse reflector, microprism array structure layer is arranged at basalis towards projector's one side, microprism array structure layer is by bottom surface, projector's incident ray shadow surface and ambient light absorption layer form, bottom surface and basalis laminating, projector's incident ray shadow surface is towards projector, ambient light absorption layer deviates from projector, metal medium minute surface reflective membrane is arranged on projector's incident ray shadow surface, and metal medium minute surface reflective membrane starts from the intersection point of ambient light absorption layer and projector's incident ray shadow surface, along projector's incident ray shadow surface, to bottom surface, extend, terminate in projector and launch projector's incident ray just through the crossing intersection point place of Qie Yugai projector incident ray shadow surface, adjacent microprism array structure layer top, light diffuse reflector is arranged at the outside of metal medium minute surface reflective membrane.
The outside of described microprism array structure layer is also provided with protective seam.
In space between described protective seam and microprism array structure layer, be filled with refractive index and protective seam refractive index differs the adhesive linkage that is less than 0.1.
Described microprism array structure layer is that circle ring array is arranged or linear array is arranged, and the formed angle αHe of ambient light absorption layer and bottom surface projector's incident ray shadow surface and the formed angle β in bottom surface become large or changeless gradually.
Described projector's incident ray shadow surface and the formed angle β in bottom surface make the emergent ray of projector's incident ray after the metal medium specular layer mirror-reflection on projector's incident ray shadow surface perpendicular to bottom surface.
The formed angle α in described ambient light absorption layer and bottom surface just meets on the terminal of adjacent metal dielectric mirror facet reflective film of projector's incident ray directive rear projection machine one side the intersection point of ambient light absorption layer and projector's incident ray shadow surface.
The adjacent crown of microprism array structure layer is apart from being remained unchanged or reduced gradually by the direction away from projector, and this spacing is not more than 1/2 of projected image pixel wide.
The section of described light diffuse reflector is circular arc, ellipse or rectangle.
The utlity model has following advantage: under bright light environments, have high-gain, high-contrast also has without surperficial dazzle and high color rendition degree simultaneously; Can optionally in micro-prism structure layer outside, stick layer protective layer, there is scratch resistance, dustproof, aging-resistant characteristic.
Accompanying drawing explanation
Fig. 1 is that microprism array structure layer is gradual change cross-sectional structure schematic diagram;
Fig. 2 is that microprism array structure layer is the projection system architecture schematic diagram of endless belt array;
Fig. 3 is the projection system architecture schematic diagram that the xsect of microprism array structure layer is linear array;
Tu4Wei forward projection optical screen has the projection system architecture schematic diagram of protective seam;
Fig. 5 is a kind of forward projection screen construction schematic diagram of prior art;
In figure: 1-forward projection screen, 2-projector, 3-observation point; 4-basalis; 5-microprism array structure layer, 6-bottom surface, 7-projector incident ray shadow surface; 8-metal medium minute surface reflective membrane; 9-light diffuse reflector, 10-ambient light absorption layer, 11-projector incident ray; 12-protective seam, 13-adhesive linkage.
Embodiment
Below in conjunction with accompanying drawing, the utility model and embodiment are further described, but protection domain of the present utility model is not limited to the following stated.
[embodiment 1]:
The microprism array structure layer 5 of the present embodiment is gradual change cross-sectional structure form.
As shown in Figure 1, a kind of optical projection system with forward projection's optical screen, Ta You forward projection screen 1 and projector 2 form, described forward projection's screen 1 comprises basalis 4, microprism array structure layer 5, metal medium minute surface reflective membrane 8 and light diffuse reflector 9, microprism array structure layer 5 is arranged at basalis 4 towards projector's 2 one sides, microprism array structure layer 5 is by bottom surface 6, projector's incident ray shadow surface 7 and ambient light absorption layer 10 form, bottom surface 6 and basalis 4 laminatings, projector's incident ray shadow surface 7 is towards projector 2, ambient light absorption layer 10 deviates from projector 2, metal medium minute surface reflective membrane 8 is arranged on projector's incident ray shadow surface 7, and metal medium minute surface reflective membrane 8 starts from the intersection point of ambient light absorption layer 10Yu projector incident ray shadow surface 7, along 6 extensions to bottom surface of projector's incident ray shadow surface 7, terminate in projector's incident ray 11 that projector 2 launches just through the adjacent microprism array structure layer 5 crossing intersection point place of top Qie Yugai projector incident ray shadow surface 7, light diffuse reflector 9 is arranged at the outside of metal medium minute surface reflective membrane 8, described microprism array structure layer 5 is circle ring array arrangement or linear array arrangement, and ambient light absorption layer 10 becomes large or changeless with bottom surface 6 formed angle αHe projector incident ray shadow surface 7 gradually with the formed angle β in bottom surface 6, described projector's incident ray shadow surface 7 makes the emergent ray of projector's incident ray 11 after metal medium specular layer 8 mirror-reflections on projector's incident ray shadow surface 7 perpendicular to bottom surface 6 with the formed angle β in bottom surface 6, described ambient light absorption layer 10 and the formed angle α in bottom surface 6 just meet on the terminal of adjacent metal dielectric mirror facet reflective film 8 of projector's incident ray 11 directive rear projection machine 2 one sides the intersection point of ambient light absorption layer 10Yu projector incident ray shadow surface 7, the adjacent crown of microprism array structure layer 5 is apart from being remained unchanged or reduced gradually by the direction away from projector, and this spacing is not more than 1/2 of projected image pixel wide, or less, especially take 1/10 for the best, the section of described light diffuse reflector 9 is circular arc, ellipse or rectangle.
Basalis 4 can be hard macromolecular material (as PMMA, PC, PVC etc.), with 5 pressing of microprism array structure layer to form hard curtain, also can be soft material (as TPU, EVA, PET, silicon rubber etc.), push formation with microprism array structure layer 5 simultaneously, or pressing again after forming respectively, forms soft curtain.Microprism array structure layer 5 consists of black material visible ray to high-absorbility, its cut-open view is jagged prism array, the adjacent crown distance of microprism array structure layer 5 is by the direction away from projector, can be to remain unchanged, also can be to reduce gradually, and this spacing is not more than 1/2 of projected image pixel wide, or less, especially take 1/10 as best.
Bottom surface 6 can be combined by adhesive and basalis 4, can be also same materials with basalis 4, one-shot forming.Ambient light absorption layer 10 surfaces are black, and surface can be smooth surface, can be also rough surface, and 10 pairs of visible rays of ambient light absorption layer have high absorptivity, projector's incident ray shadow surface 7 is black, surface can be smooth surface, also can be rough surface, 7 pairs of visible rays of projector's incident ray shadow surface have high absorptivity, metal medium minute surface reflective membrane 8 can consist of argent, aluminium, copper, gold etc., thickness can be between 0.05 micron to 1 micron, take 0.3 micron as best, and 8 pairs of visible rays of metal medium reflective membrane have high specular reflectance, light diffuse reflector 9 is by BaSO
4or TiO
2deng light diffusion material, form, be arranged at metal medium reflective membrane 8 outsides on projector's incident ray shadow surface 7, its width equals the width of metal medium reflective membrane 8, the thickness 1 μ m～50 μ m of light diffuse reflector 9, take 25 microns as best, 9 pairs of projector's 2 incident raies of light diffuse reflector have diffusivity, change the original direction of propagation of incident ray, incident ray energy is redistributed in space, and can adjust accordingly according to different demands, projector's 2 incident raies via this light diffuse reflector 9 after, it can be Lambertian reflection light distribution, also can be to distribute by the diffuse reflection light intensity of certain chief ray direction.
The ambient light R10 of higher position oblique incidence above screen, just directive has ambient light absorption layer 10, its absorptivity is not less than 90%, only have seldom component environment light to reflect through projector's incident ray shadow surface 7, enter observation point 3 one sides, thereby effectively raise under bright light environments the contrast of projected image and color rendition degree; The ambient light R11 of lower position oblique incidence below screen, just directive has ambient light absorption layer 10, visible ray also can major part be absorbed, only have seldom component environment light to reflect via projector's incident ray shadow surface 7, enter observation point 3 one sides, thereby also can effectively raise under bright light environments the contrast of projected image and color rendition degree.
[embodiment 2]:
As shown in Figure 2, the xsect of the microprism array structure layer 5 of the present embodiment is zonary structure, and all the other architectural characteristics are with embodiment 1.
When light diffuse reflector 9 is Lambertian reflection surface, its reflection ray intensity is all the time with to disperse cosine of an angle proportional, even project image light on the short segment distance of projector 2, due to the reflection of Lambertian reflection surface to light, make the image visual angle of observation point 3 one sides large, and have very high brightness of image homogeneity.Ambient light absorption layer 10 has very strong absorption, and the ambient light R10 of directive ambient light absorption layer 10 and R11, by most of absorption of corresponding ambient light absorption layer 10, make this plane in bright light environments, have higher contrast.Projector 2 is less apart from the vertical range of basalis 4 planes, is generally less than and equals 1m, take and is less than or equal to 0.6m as best, is applicable to short distance Projection Display, has low gain, high-contrast, large visible angle and brightness uniformity.
When light diffuse reflector 9 is non-Lambertian reflection surface, there is stronger transmission light-dispersing effect.After projector's incident ray 11 transmitted light diffuse reflectors 9, via metal medium minute surface reflective membrane 8 mirror-reflections, in projection process again via 9 scatterings of light diffuse reflector, projector 2 projects image light in short distance, light ray energy mainly concentrates in the mirror-reflection light direction by metal medium minute surface reflective membrane 8 mirror-reflections, simultaneously due to the scattering to a certain extent of 9 pairs of incident raies of light diffuse reflector, make the image visual angle at observation point 3 places less, weakening due to 9 pairs of light scattering effects of light diffuse reflector simultaneously, make to inject ambient light wherein via metal medium minute surface reflective membrane 8 mirror-reflections after, inject ambient light absorption layer 10, major part is absorbed, and ambient light absorption layer 10 has very strong absorption equally to other directional ring environmental light, make this screen in bright light environments, have high contrast, relatively concentrated due to image light energy, make this screen there is very high gain.
[embodiment 3]:
As shown in Figure 3, the xsect of the microprism array structure layer 5 of the present embodiment is linear array type structure, and ambient light absorption layer 10 Mian Yu bottom surfaces 6, place are vertical, and all the other architectural characteristics are with embodiment 1.
Optical fiber diffuse reflector 9 is Lambertian reflection surface, its reflection ray intensity is all the time with to disperse cosine of an angle proportional, even if projector 2 projects image light in short distance, due to the reflection of Lambertian reflection surface to light, make the image visual angle of observation point 3 one sides large, and have very high brightness of image homogeneity.10 pairs of ambient lights of ambient light absorption layer have very strong absorption, make this screen in bright light environments, have high contrast.
Projector 2 is larger apart from the vertical range of basalis 4 planes, is generally more than or equal to 2m, take and is more than or equal to 4m as best, is applicable to length apart from Projection Display, has low gain, high-contrast, large visible angle and brightness uniformity.
[embodiment 4]:
As shown in Figure 4, the present embodiment has scratch resistance, dustproof, and aging-resistant characteristic, can be used for any one embodiment in above-mentioned three kinds of embodiment.Be to be also provided with protective seam 12 in the outside of microprism array structure layer 5, in described protective seam 12 and the space between microprism array structure layer 5, be filled with refractive index and protective seam 12 refractive indexes differ the adhesive linkage 13 that is less than 0.1.On the surface in the outside of the more close projector 2 of protective seam 12, scribble scratch resistance and add hard conating, this adds hard conating can be anti-dazzle coating, can be also the rough surface of dazzle that disappears, thereby makes forward projection's screen 1 have scratch resistance, dustproof, aging-resistant characteristic.
Claims (8)
- The optical projection system of 1.Yi Zhongdai forward projection optical screen, it is characterized in that: Ta You forward projection screen (1) and projector (2) form, described forward projection's screen (1) comprises basalis (4), microprism array structure layer (5), metal medium minute surface reflective membrane (8) and light diffuse reflector (9), microprism array structure layer (5) is arranged at basalis (4) towards projector's (2) one sides, microprism array structure layer (5) is by bottom surface (6), projector's incident ray shadow surface (7) and ambient light absorption layer (10) form, bottom surface (6) and basalis (4) laminating, projector's incident ray shadow surface (7) is towards projector (2), ambient light absorption layer (10) deviates from projector (2), metal medium minute surface reflective membrane (8) is arranged on projector's incident ray shadow surface (7), and metal medium minute surface reflective membrane (8) starts from the intersection point of ambient light absorption layer (10) and projector's incident ray shadow surface (7), along projector's incident ray shadow surface (7) (6) extension to bottom surface, terminate in projector (2) and launch projector's incident ray (11) just through the crossing intersection point place of adjacent microprism array structure layer (5) top Qie Yugai projector incident ray shadow surface (7), light diffuse reflector (9) is arranged at the outside of metal medium minute surface reflective membrane (8).
- 2. a kind of optical projection system with forward projection's optical screen according to claim 1, is characterized in that: the outside of described microprism array structure layer (5) is also provided with protective seam (12).
- 3. a kind of optical projection system with forward projection's optical screen according to claim 2, is characterized in that: in the space between described protective seam (12) and microprism array structure layer (5), be filled with refractive index and protective seam (12) refractive index differs the adhesive linkage (13) that is less than 0.1.
- 4. a kind of optical projection system with forward projection's optical screen according to claim 1, it is characterized in that: described microprism array structure layer (5) is circle ring array arrangement or linear array arrangement, and ambient light absorption layer (10) becomes gradually large or immobilizes with the formed angle β in bottom surface (6) with bottom surface (6) formed angle αHe projector incident ray shadow surface (7).
- 5. a kind of optical projection system with forward projection's optical screen according to claim 1, is characterized in that: described projector's incident ray shadow surface (7) makes the emergent ray of projector's incident ray (11) after metal medium specular layer (8) mirror-reflection on projector's incident ray shadow surface (7) perpendicular to bottom surface (6) with the formed angle β in bottom surface (6).
- 6. a kind of optical projection system with forward projection's optical screen according to claim 1, is characterized in that: described ambient light absorption layer (10) and the formed angle α in bottom surface (6) just meet on the terminal of adjacent metal dielectric mirror facet reflective film (8) of projector's incident ray (11) directive rear projection machine (2) one sides the intersection point of ambient light absorption layer (10) and projector's incident ray shadow surface (7).
- 7. a kind of optical projection system with forward projection's optical screen according to claim 1, it is characterized in that: the adjacent crown of microprism array structure layer (5) is apart from being remained unchanged or reduced gradually by the direction away from projector, and this spacing is not more than 1/2 of projected image pixel wide.
- 8. a kind of optical projection system with forward projection's optical screen according to claim 1, is characterized in that: the section of described light diffuse reflector (9) is circular arc, ellipse or rectangle.
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| CN201420402424.6U CN204009344U (en) | 2014-07-21 | 2014-07-21 | A kind of optical projection system with forward projection's optical screen |
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| CN201420402424.6U CN204009344U (en) | 2014-07-21 | 2014-07-21 | A kind of optical projection system with forward projection's optical screen |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104062839A (en) * | 2014-07-21 | 2014-09-24 | 成都菲斯特科技有限公司 | Projection system with forward projection optical screen |
| CN109557760A (en) * | 2019-01-08 | 2019-04-02 | 成都菲斯特科技有限公司 | A kind of off-axis short focus orthographic projection optical screen and optical projection system |
| CN110297387A (en) * | 2018-03-22 | 2019-10-01 | 深圳光峰科技股份有限公司 | Screen and optical projection system |
| CN110297385A (en) * | 2018-03-22 | 2019-10-01 | 深圳光峰科技股份有限公司 | Screen and optical projection system |
| CN110361921A (en) * | 2018-04-02 | 2019-10-22 | 深圳光峰科技股份有限公司 | Screen and optical projection system |
| US10564536B2 (en) | 2017-09-20 | 2020-02-18 | Coretronic Corporation | Projection screen and projection system |
| US10571792B2 (en) | 2017-09-20 | 2020-02-25 | Coretronic Corporation | Projection device and projection system |
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- 2014-07-21 CN CN201420402424.6U patent/CN204009344U/en active Active
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104062839A (en) * | 2014-07-21 | 2014-09-24 | 成都菲斯特科技有限公司 | Projection system with forward projection optical screen |
| CN104062839B (en) * | 2014-07-21 | 2016-01-20 | 成都菲斯特科技有限公司 | A kind of optical projection system with forward projection's optical screen |
| US10564536B2 (en) | 2017-09-20 | 2020-02-18 | Coretronic Corporation | Projection screen and projection system |
| US10571792B2 (en) | 2017-09-20 | 2020-02-25 | Coretronic Corporation | Projection device and projection system |
| CN110297387A (en) * | 2018-03-22 | 2019-10-01 | 深圳光峰科技股份有限公司 | Screen and optical projection system |
| CN110297385A (en) * | 2018-03-22 | 2019-10-01 | 深圳光峰科技股份有限公司 | Screen and optical projection system |
| US11143947B2 (en) | 2018-03-22 | 2021-10-12 | Appotronics Corporation Limited | Screen and projection system |
| US11448952B2 (en) | 2018-03-22 | 2022-09-20 | Appotronics Corporation Limited | Screen and projection system |
| CN110361921A (en) * | 2018-04-02 | 2019-10-22 | 深圳光峰科技股份有限公司 | Screen and optical projection system |
| CN110361921B (en) * | 2018-04-02 | 2021-08-24 | 深圳光峰科技股份有限公司 | Screen and projection system |
| CN109557760A (en) * | 2019-01-08 | 2019-04-02 | 成都菲斯特科技有限公司 | A kind of off-axis short focus orthographic projection optical screen and optical projection system |
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