CN204883152U - Miniature projector of DLP - Google Patents
Miniature projector of DLP Download PDFInfo
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- CN204883152U CN204883152U CN201520589136.0U CN201520589136U CN204883152U CN 204883152 U CN204883152 U CN 204883152U CN 201520589136 U CN201520589136 U CN 201520589136U CN 204883152 U CN204883152 U CN 204883152U
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- 230000003287 optical effect Effects 0.000 claims abstract description 37
- 238000007493 shaping process Methods 0.000 claims abstract description 9
- 230000000644 propagated effect Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 230000005540 biological transmission Effects 0.000 description 5
- 241001025261 Neoraja caerulea Species 0.000 description 4
- 230000003247 decreasing effect Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000004447 accommodation reflex Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000002310 reflectometry Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS 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
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
Abstract
The utility model discloses a miniature projector of DLP. This miniature projector of DLP includes: illuminating optical system includes: light source, beam shaping part and light beam guiding part, DMD light modulator, this DMD light modulator is parallel with light beam guiding part rectangular prism's a right -angle side, and projector lens group. This miniature projector of DLP structural configuration is equitable, mutually supports through adopting the free -form surface battery of lens, and the design that its off -axis deflected has reduced the distance that light was propagated, has shortened the optical distance, has reduced loss of light energy, has improved the projection quality when reducing the miniature projector of DLP volume, satisfies the market requirement of lumen degree height, miniaturation.
Description
Technical field
The utility model relates to digital projection display technique field, particularly a kind of DLP miniature projector.
Background technology
In recent years, along with the continuous progress of science and technology, each electronic product is all tending towards miniaturization, portative future development, projector is no exception, DLP miniature projector, also referred to as digital light processing projector, be using digital micro-mirror device dmd chip as image device, realized the instrument of projects images by accommodation reflex light.The miniature DLP projector used on the market at present is also called as pouch-type or hand held projector, the structures shape of its light path design size of projector, how under the prerequisite reducing light energy losses, that light channel structure can be designed again is rationally compact, thus meet microminiaturized requirement, becoming those skilled in the art has one of technical matters to be solved.
Utility model content
In order to solve the problem, the utility model provides a kind of rationally distributed, and production cost is lower, meets the market demands DLP miniature projector that lumen degree is high, microminiaturized.
The technical scheme that the utility model adopts is:
A kind of DLP miniature projector, comprising: lamp optical system, comprising: light source, beam shaping parts, light beam guiding part, DMD photomodulator, and projection lens set; Described beam shaping parts comprise: be arranged on the collector lens group on described light source optical path; Described light beam guiding part comprises: be set in turn in the light splitting eyeglass free-form surface lens group in collector lens group light path and right-angle prism; Described free-form surface lens group, comprise the first free-form surface lens and the second free-form surface lens, described first free-form surface lens comprises the first surface being arranged on beam incident surface and the second curved surface being arranged on beam exit face, and described second free-form surface lens comprises the 3rd curved surface being arranged on beam incident surface and the 4th curved surface being arranged on beam exit face; The normal shape injecting the light of the first free-form surface lens first surface and the first free-form surface lens first surface is at a certain angle, and also shape is at a certain angle to inject the light of the second free-form surface lens the 3rd curved surface and the second free-form surface lens the 3rd normal to a surface.
Preferably, described light source comprises the first light source, secondary light source and the 3rd light source; Described collector lens group comprises the first collector lens group be arranged on the first light source optical path, is arranged on the second collector lens group in secondary light source light path, and is arranged on the 3rd collector lens group on the 3rd light source optical path; Described light splitting eyeglass comprises the first light splitting eyeglass be arranged in the first collector lens group or the second collector lens group light path, and is arranged at the second light splitting eyeglass in the 3rd collector lens group light path; Described free-form surface lens group and right-angle prism are arranged in the light path of the second light splitting eyeglass.
Preferably, described light beam guiding part also comprise described in be arranged on relay lens, fly's-eye lens or optical wand in light splitting eyeglass light path.Relay lens has the effect that light strengthens, and can supplement the optical energy loss of light after long-distance transmissions.Fly's-eye lens or optical wand can carry out homogenising to light beam.
Preferably, the included angle 1 that the normal of the described light and the first free-form surface lens first surface of injecting the first free-form surface lens first surface is formed meets relational expression: 0≤φ 1≤30, injects the included angle 2 that the light of the second free-form surface lens the 3rd curved surface and the second free-form surface lens the 3rd normal to a surface formed and meets relational expression: 5≤φ 2≤50.This light path reasonably designs the distance decreasing light transmition, reduces optical energy loss, reduces projector's volume, improves projector's brightness.
Preferably, the refractive index N of described first free-form surface lens and the second free-form surface lens meets relational expression: 1.1≤N≤2.0.This light path reasonably designs the distance decreasing light transmition, reduces optical energy loss, reduces projector's volume, improves projector's brightness.
Preferably, described first light source is blue led light source, and described secondary light source is red LED light source, and described 3rd light source is green LED light source.The three primary light source be made up of the first LED light source, the second LED light source and the 3rd LED light source.
Preferably, described DMD photomodulator is parallel with a right-angle side of described right-angle prism.
Preferably, described projection lens set is made up of double-gauss lens set, adopts the structure that diaphragm is mid-.This set has the advantages that telecentricity is good, aberration is little, and it projects to by the light after described DLP light modulator modulates.
Preferably, described collector lens group is made up of a spherical lens and a non-spherical lens, and spherical lens and non-spherical lens all have positive focal power.Therefore light is had to the effect of collecting and converging.
Preferably, described first light splitting eyeglass comprises the first workplace in the face of the first collector lens group is arranged, and back to the second workplace that the first collector lens group is arranged, described second light splitting eyeglass comprises the 3rd workplace in the face of the 3rd collector lens group is arranged, and back to the 4th workplace that the 3rd collector lens group is arranged; First workplace of described first light splitting eyeglass is coated with anti-reflection film, the second workplace is coated with and increases anti-film; 3rd workplace of described second light splitting eyeglass is coated with anti-reflection film, the 4th workplace is coated with and increases anti-film.Anti-reflection film, can be as much as possible through corresponding light, filters other light, ensures that the light after converging does not mix other light, improve the purity of light.Increase the reflectivity that anti-film can improve corresponding light.
Compared with prior art, the utility model has following beneficial effect: this DLP miniature projector topology layout is reasonable, cooperatively interact by adopting free-form surface lens group, its design from axle deflection decreases the distance of light transmition, shorten light path, reduce optical energy loss, improve projection quality while reducing DLP miniature projector volume, meet the market demands that lumen degree is high, microminiaturized.
Accompanying drawing explanation
Fig. 1 is the structural representation of DLP miniature projector preferred embodiment of the present utility model.
Fig. 2 is the partial enlarged drawing of free-form surface lens group in DLP miniature projector preferred embodiment of the present utility model.
Embodiment
Below in conjunction with accompanying drawing of the present utility model, the technical solution of the utility model is clearly and completely described, obviously, but is to be understood that protection domain of the present utility model not by the restriction of embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
As shown in Figure 1, comprise according to the concrete structure of DLP miniature projector described in the utility model and arranging in turn along light path: lamp optical system; Comprise: light source, beam shaping parts and light beam guiding part; DMD photomodulator; And projection lens set.Described beam shaping parts comprise: be arranged on the collector lens group on described light source optical path; Described light beam guiding part comprises: be set in turn in the light splitting eyeglass free-form surface lens group in collector lens group light path and right-angle prism; DMD photomodulator, and projection lens set; Wherein, described free-form surface lens group, comprise the first free-form surface lens and the second free-form surface lens, described first free-form surface lens comprises the first surface being arranged on beam incident surface and the second curved surface being arranged on beam exit face, and described second free-form surface lens comprises the 3rd curved surface being arranged on beam incident surface and the 4th curved surface being arranged on beam exit face; The normal shape injecting the light of the first free-form surface lens first surface and the first free-form surface lens first surface is at a certain angle, and also shape is at a certain angle to inject the light of the second free-form surface lens the 3rd curved surface and the second free-form surface lens the 3rd normal to a surface.
Wherein, light source comprises described light source and comprises the first light source, secondary light source and the 3rd light source: described first light source is blue led light source, and described secondary light source is red LED light source, and described 3rd light source is green LED light source.Form three primary light source by the first LED light source, the second LED light source and the 3rd LED light source, the position of three kinds of light sources is not limited to the set-up mode of the present embodiment restriction, and three groups of light sources also can be the light sources of other types, are not limited to LED light source.Described collector lens group comprises the first collector lens group be arranged on the first light source optical path, is arranged on the second collector lens group in secondary light source light path, and is arranged on the 3rd collector lens group on the 3rd light source optical path; Described light splitting eyeglass comprises the first light splitting eyeglass be arranged in the first collector lens group or the second collector lens group light path, and is arranged at the second light splitting eyeglass in the 3rd collector lens group light path; Described free-form surface lens group and right-angle prism are arranged in the light path of the second light splitting eyeglass.
Described light source also can only comprise the first light source and secondary light source; Described collector lens group comprises the first collector lens group be arranged on the first light source optical path, and is arranged on the second collector lens group in secondary light source light path; Described light splitting eyeglass comprises the first light splitting eyeglass be arranged in the first collector lens group light path, is arranged at the second light splitting eyeglass in the second collector lens group light path; Described free-form surface lens group and right-angle prism are arranged in the light path of the second light splitting eyeglass.
Concrete number of light sources can be set according to actual conditions, and corresponding collector lens group and light splitting eyeglass.
Described beam shaping parts comprise: be arranged on the first collector lens group 10 in its respective optical path along blue led light source B direction, be arranged on the second collector lens group 20 in its respective optical path along green LED light source G direction, be arranged on the 3rd collector lens group 30 in its respective optical path along red LED light source R direction.
Described light beam guiding part comprises: be arranged at the first light splitting eyeglass 1, the relay lens 2 in the first collector lens group 10 emergent light respective optical path, is arranged at the second light splitting eyeglass 3, fly's-eye lens or optical wand 4 in the 3rd collector lens group 30 emergent light respective optical path, free-form surface lens group 40 and a right-angle prism 7.Described first light splitting eyeglass 1 comprises the first workplace 11 in the face of the first collector lens group 10 is arranged, and back to the second workplace 12 that the first collector lens group 10 is arranged.Described second light splitting eyeglass 3 comprises the 3rd workplace 32 in the face of the 3rd collector lens group 30 is arranged, and back to the 4th workplace 31 that the 3rd collector lens group 30 is arranged.
DMD photomodulator 8, also referred to as digital light processing projector, is using digital micro-mirror device dmd chip as image device, is realized the instrument of projects images by accommodation reflex light.It is modulated the light that the lamp optical system from described injection light penetrates, parallel with a right-angle side of described right-angle prism 7.
Projection lens set 50 is made up of double-gauss lens set, adopts the mid-structure of diaphragm, has the advantages that telecentricity is good, aberration is little, and it projects to the light after being modulated by described DMD photomodulator 8.
As mentioned above, the blue light beam that blue led light source B sends, is made up of a spherical lens and a non-spherical lens through the first collector lens group 10, first collector lens group 10, and spherical lens and non-spherical lens all have positive focal power, therefore light is had to the effect of collecting and converging.Light after convergence is through the first workplace 11 of the first light splitting eyeglass 1, first workplace 11 of the first light splitting eyeglass 1 is coated with anti-reflection film, can be as much as possible through blue ray, filter other light, ensure that the light after converging does not mix other light, improve the purity of light.
The green beam that green LED light source G sends, through the second collector lens group 20, second collector lens group 20 is also made up of a spherical lens and a non-spherical lens, and spherical lens and non-spherical lens all have positive focal power, therefore light is had to the effect of collecting and converging.Light after convergence is coated with and increases anti-film on the second workplace 12 of the second workplace 12, first light splitting eyeglass 1 of the first light splitting eyeglass 1, as much as possible green light can be carried out reflection and import in blue ray light path.
Blue ray after the first light splitting eyeglass 1 transmission and the green light after the first light splitting eyeglass 1 reflects merge together, again through relay lens 2, relay lens 2 has the effect that light strengthens, and can supplement the optical energy loss of light after long-distance transmissions.
The red beam that red LED light source R sends, through the 3rd collector lens group 30,3rd collector lens group 30 is also made up of a spherical lens and a non-spherical lens, and spherical lens and non-spherical lens all have positive focal power, therefore light is had to the effect of collecting and converging.Light after convergence is coated with anti-reflection film on the 3rd workplace 32 of the 3rd workplace 32, second light splitting eyeglass 3 of the second light splitting eyeglass 3, can be as much as possible through red light; 4th workplace 31 of the second light splitting eyeglass 3 is coated with and increases anti-film, converge with red light after blue ray after relay lens 2 and green light can being reflected, three kinds of light after converging enter fly's-eye lens or optical wand 4, fly's-eye lens or optical wand 4 have the effect of even light, form uniform illumination system.
As from the foregoing, blue led light source B the color beam that turns blue to overlap with the first light splitting eyeglass 1 central optical axis after the first workplace 11 transmission of the first light splitting eyeglass 1 or parallel, green LED light source G institute green-emitting light beam to overlap with the first light splitting eyeglass 1 central optical axis or parallel after reflecting through the second workplace 12 of the first light splitting eyeglass 1, and red LED light source R institute burn red bundle overlaps with the second light splitting eyeglass 3 central optical axis or parallel after the 3rd workplace 32 transmission of the second light splitting eyeglass 3.
Compressed through free-form surface lens group 40 pairs of light paths by the uniform light after fly's-eye lens or optical wand 4, free-form surface lens group 40 comprises the first free-form surface lens 5 and the second free-form surface lens 6 again.
As shown in Figure 2, first free-form surface lens 5 comprises first surface S1, described second free-form surface lens 6 comprises the 3rd curved surface S2, the included angle 1 that the normal A1 of the light and the first free-form surface lens 5 first surface of injecting the first free-form surface lens 5 first surface S1 is formed meets relational expression: 0≤φ 1≤30, injects the included angle 2 that the light of the second free-form surface lens 6 the 3rd curved surface S2 and the second free-form surface lens 6 the 3rd normal to a surface B1 formed and meets relational expression: 5≤φ 2≤50.And the refractive index N of the first free-form surface lens 5 and the second free-form surface lens 6 meets relational expression: 1.1≤N≤2.0.This light path reasonably designs the distance decreasing light transmition, reduces optical energy loss, reduces projector's volume, improves projector's brightness.
Through free-form surface lens group 40 compress after light path again by a right-angle prism 7 after light in DMD photomodulator 8, light is modulated, the light after modulation by right-angle prism 7 utilize total reflection light is projected by projection lens set 50.Projection lens set 50 is made up of double-gauss lens set, adopts the structure that diaphragm is mid-, has the feature of large wide-angle, can increase the drop shadow spread of projector.
It should be noted that the utility model does not limit the material of beam shaping parts, light beam guiding part and projection lens set, its material can be glass, plastics or other light transmissive material.
Finally, also it should be noted that, in the text, the such as relational terms of first and second grades and so on is only used for an entity or operation to separate with another entity or operational zone, and not necessarily requires or imply the relation that there is this reality between these entities or operation or sequentially.And, term " comprises ", " comprising " or other variants are intended to contain comprising of nonexcludability, thus make to comprise the process of a series of key element, method, article or equipment and not only comprise those key elements, but also comprise other key elements clearly do not listed, or also comprise the intrinsic key element of this process, method, article or equipment.When not more restrictions, there is the key element that statement " comprising ... " limits, and be not precluded within process, method, article or the equipment comprising described key element and also there is other identical element.
Claims (10)
1. a DLP miniature projector, is characterized in that, comprising:
Lamp optical system, comprising: light source, beam shaping parts, light beam guiding part, DMD photomodulator, and projection lens set;
Wherein, described beam shaping parts comprise: be arranged on the collector lens group on described light source optical path;
Described light beam guiding part comprises: be set in turn in the light splitting eyeglass in collector lens group light path, free-form surface lens group and right-angle prism;
Described free-form surface lens group, comprise the first free-form surface lens and the second free-form surface lens, described first free-form surface lens comprises the first surface being arranged on beam incident surface and the second curved surface being arranged on beam exit face, and described second free-form surface lens comprises the 3rd curved surface being arranged on beam incident surface and the 4th curved surface being arranged on beam exit face; The normal shape injecting the light of the first free-form surface lens first surface and the first free-form surface lens first surface is at a certain angle, and also shape is at a certain angle to inject the light of the second free-form surface lens the 3rd curved surface and the second free-form surface lens the 3rd normal to a surface.
2. DLP miniature projector according to claim 1, is characterized in that, described light source comprises the first light source, secondary light source and the 3rd light source; Described collector lens group comprises the first collector lens group be arranged on the first light source optical path, is arranged on the second collector lens group in secondary light source light path, and is arranged on the 3rd collector lens group on the 3rd light source optical path; Described light splitting eyeglass comprises the first light splitting eyeglass be arranged in the first collector lens group or the second collector lens group light path, and is arranged at the second light splitting eyeglass in the 3rd collector lens group light path; Described free-form surface lens group and right-angle prism are arranged in the light path of the second light splitting eyeglass.
3. DLP miniature projector according to claim 1, is characterized in that, is arranged on relay lens, fly's-eye lens or optical wand in light splitting eyeglass light path described in described light beam guiding part also comprises.
4. DLP miniature projector according to claim 1, it is characterized in that, the included angle 1 that the normal of the described light and the first free-form surface lens first surface of injecting the first free-form surface lens first surface is formed meets relational expression: 0≤φ 1≤30, injects the included angle 2 that the light of the second free-form surface lens the 3rd curved surface and the second free-form surface lens the 3rd normal to a surface formed and meets relational expression: 5≤φ 2≤50.
5. DLP miniature projector according to claim 1, is characterized in that, the refractive index N of described first free-form surface lens and the second free-form surface lens meets relational expression: 1.1≤N≤2.0.
6. DLP miniature projector according to claim 2, is characterized in that, described first light source is blue led light source, and described secondary light source is red LED light source, and described 3rd light source is green LED light source.
7. DLP miniature projector according to claim 1, is characterized in that, described DMD photomodulator is parallel with a right-angle side of described right-angle prism.
8. DLP miniature projector according to claim 1, is characterized in that, described projection lens set is made up of double-gauss lens set, adopts the structure that diaphragm is mid-.
9. DLP miniature projector according to claim 1, is characterized in that, described collector lens group is made up of a spherical lens and a non-spherical lens, and spherical lens and non-spherical lens all have positive focal power.
10. DLP miniature projector according to claim 2, it is characterized in that, described first light splitting eyeglass comprises the first workplace in the face of the first collector lens group is arranged, and back to the second workplace that the first collector lens group is arranged, described second light splitting eyeglass comprises the 3rd workplace in the face of the 3rd collector lens group is arranged, and back to the 4th workplace that the 3rd collector lens group is arranged; First workplace of described first light splitting eyeglass is coated with anti-reflection film, the second workplace is coated with and increases anti-film; 3rd workplace of described second light splitting eyeglass is coated with anti-reflection film, the 4th workplace is coated with and increases anti-film.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520589136.0U CN204883152U (en) | 2015-08-03 | 2015-08-03 | Miniature projector of DLP |
| PCT/CN2016/083251 WO2017020636A1 (en) | 2015-08-03 | 2016-05-25 | Dlp mini projector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520589136.0U CN204883152U (en) | 2015-08-03 | 2015-08-03 | Miniature projector of DLP |
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| Publication Number | Publication Date |
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| CN204883152U true CN204883152U (en) | 2015-12-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520589136.0U Active CN204883152U (en) | 2015-08-03 | 2015-08-03 | Miniature projector of DLP |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN204883152U (en) |
| WO (1) | WO2017020636A1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017020636A1 (en) * | 2015-08-03 | 2017-02-09 | 广景视睿科技（深圳）有限公司 | Dlp mini projector |
| CN106842794A (en) * | 2017-03-28 | 2017-06-13 | 广景视睿科技（深圳）有限公司 | A kind of non-telecentricity DLP micro projection modules |
| CN106990661A (en) * | 2017-05-17 | 2017-07-28 | 合肥蔚星光电科技有限公司 | A kind of DLP projection system for 3-D scanning |
| CN110703542A (en) * | 2018-07-09 | 2020-01-17 | 宁波舜宇车载光学技术有限公司 | DLP projection system and application thereof |
| CN112882230A (en) * | 2019-11-29 | 2021-06-01 | 宁波舜宇车载光学技术有限公司 | Optical system and method for eliminating color fringes |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103529629B (en) * | 2012-08-30 | 2015-12-16 | 广景科技有限公司 | DLP miniature projector |
| CN202837791U (en) * | 2012-08-30 | 2013-03-27 | 广景科技有限公司 | DLP mini projector |
| JPWO2014115818A1 (en) * | 2013-01-23 | 2017-01-26 | 株式会社ニコン | Image projection optical system and image projection apparatus |
| CN203838464U (en) * | 2014-05-15 | 2014-09-17 | 广景科技有限公司 | Linear DLP micro projector |
| CN203811978U (en) * | 2014-05-15 | 2014-09-03 | 广景科技有限公司 | DLP mini-sized projector |
| CN204270006U (en) * | 2014-12-17 | 2015-04-15 | 广景科技有限公司 | Linear pattern DLP miniature projector |
| CN104155835B (en) * | 2014-08-15 | 2015-12-30 | 广景科技有限公司 | DLP miniature projector |
| CN203982065U (en) * | 2014-08-15 | 2014-12-03 | 广景科技有限公司 | DLP minitype projection machine |
| CN204883152U (en) * | 2015-08-03 | 2015-12-16 | 广景视睿科技（深圳）有限公司 | Miniature projector of DLP |
-
2015
- 2015-08-03 CN CN201520589136.0U patent/CN204883152U/en active Active
-
2016
- 2016-05-25 WO PCT/CN2016/083251 patent/WO2017020636A1/en active Application Filing
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017020636A1 (en) * | 2015-08-03 | 2017-02-09 | 广景视睿科技（深圳）有限公司 | Dlp mini projector |
| CN106842794A (en) * | 2017-03-28 | 2017-06-13 | 广景视睿科技（深圳）有限公司 | A kind of non-telecentricity DLP micro projection modules |
| CN106990661A (en) * | 2017-05-17 | 2017-07-28 | 合肥蔚星光电科技有限公司 | A kind of DLP projection system for 3-D scanning |
| CN110703542A (en) * | 2018-07-09 | 2020-01-17 | 宁波舜宇车载光学技术有限公司 | DLP projection system and application thereof |
| CN112882230A (en) * | 2019-11-29 | 2021-06-01 | 宁波舜宇车载光学技术有限公司 | Optical system and method for eliminating color fringes |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2017020636A1 (en) | 2017-02-09 |
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