CN104808421A - Optical integration module and applicable optical system thereof - Google Patents
Optical integration module and applicable optical system thereof Download PDFInfo
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- CN104808421A CN104808421A CN201410737239.7A CN201410737239A CN104808421A CN 104808421 A CN104808421 A CN 104808421A CN 201410737239 A CN201410737239 A CN 201410737239A CN 104808421 A CN104808421 A CN 104808421A
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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
- G03B21/208—Homogenising, shaping of the illumination light
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
- G02B1/11—Anti-reflection coatings
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4204—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms
- G02B6/4207—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms with optical elements reducing the sensitivity to optical feedback
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Projection Apparatus (AREA)
Abstract
The present invention discloses an optical integration module and an applicable optical system thereof. The optical system comprises a light source and an optical integration module. The optical integration module comprises an optical integration column, an optical assembly and an anti-reflective layer. The optical integration column is provided with an inlet. The optical assembly is covered onto the inlet of the optical integration column. The optical assembly is provided with a light-transmitting surface. The surface area of the light-transmitting surface is larger than the cross-sectional area of the inlet of the optical integration column. The anti-reflective layer is formed on the light-transmitting surface. The incident light penetrates the anti-reflective layer and the optical assembly along a light flux path and then incidents onto the inlet of the optical integration column.
Description
Technical field
The present invention relates to a kind of optical integration pillar, espespecially a kind of prevent dust to be covered in optical integration pillar entrance light integration module and the optical system that is suitable for.
Background technology
In recent years, projector miscellaneous is widely used in various different image purposes.For example, projector can in classroom, the place such as meeting room, Meeting Room or family's theater holds speech, presides over the meeting or carries out course teaching.By the process of projector, the signal of video signal provided by image signal source can be exaggerated and be shown on projection screen.
Fig. 1 be in conventional digital light process (digital light processing, DLP) optical projection system light by the path schematic diagram of light fixture to projection lens.As shown in Figure 1, optical projection system 1 comprises light fixture 11, optical integration pillar 12 (such as, optical channel), relay lens group 13, total internal reflection prism 14 (total internalreflection prism, TIR prism), digital micro-mirror device 15 (digital micro-mirror device, DMD) and projection lens 16.There is the light fixture 11 output beam 11a of elliptic reflector, and light beam 11a is converged in optical integration pillar 12.The light beam 11a being carried out homogenising by optical integration pillar 12 penetrates relay lens group 13 and total internal reflection prism 14, is then incident on digital micro-mirror device 15.Then, the light through homogenising is carried out regulating and controlling and is projeced on screen (not shown) by projection lens 16 by digital micro-mirror device 15.
Fig. 2 is the schematic diagram that light converges at optical integration pillar inlet surface.As shown in Figure 1, usually anti-reflecting layer can be coated with, to increase light transmittance in inlet surface and exit surface when using optical integration pillar 12.Because the converging beam 11a sent from light fixture 11 can focus on the inlet surface 121 of optical integration pillar 12, make the surface temperature of the inlet surface 121 of optical integration pillar 12 relatively high.Therefore, for the antireflecting coating of inlet surface 121 being formed at optical integration pillar 12, high temperature resistant is important.
Along with the increase of the power of light fixture 11, the temperature of the inlet surface 121 of optical integration pillar 12 also significantly raises, and uses more of a specified duration along with optical projection system 1, and dust more may be attached to the surface of optical integration pillar 12.Make the surface temperature of dust attachment place increase because dust can absorb heat, antireflecting coating may be caused impaired, therefore, be head it off, usually can remove antireflecting coating.But, remove anti-reflecting layer and the light transmittance of optical integration pillar 12 can be made to decline, cause luminous flux to reduce.In general, the refraction coefficient of glass is approximately 1.5, known according to Fresnel's equation (Fresnel equations), the reflectivity of the glass nearly 4% of uncoated antireflecting coating.Same according to Fresnel's equation, reflectivity can be reduced to less than 1% by the suitable antireflecting coating of general coating.In other words, if remove the antireflecting coating of optical integration pillar 12, optical system can lose the luminous flux of about 3%.
In view of this, how to develop a kind of smooth integration module and applicable optical system thereof, to solve the disappearance of common technology, real is those skilled in the art's problems in the urgent need to address at present.
Summary of the invention
The object of the present invention is to provide a kind of smooth integration module and applicable optical system thereof, by the optical module with large surface area being arranged at the entrance of optical integration pillar, promote to solve conventional optical integration pillar because of source efficiency, and the problem of antireflecting coating cannot be retained, or make the overheated impaired problem of antireflecting coating because of dust accretions.
Another object of the present invention is to provide a kind of smooth integration module and applicable optical system thereof, the translucent element with large surface area is arranged at the entrance of optical integration pillar, to increase the incident area being incident in anti-reflecting layer, reduce the density of light and the working temperature of antireflecting coating, so as to retaining anti-reflecting layer and preventing anti-reflecting layer impaired, reach the advantage promoting the overall light passband of light integration module.
According to conception of the present invention, of the present invention one more extensively implements pattern for providing a kind of light integration module, comprises optical integration pillar, optical module and anti-reflecting layer.Optical integration pillar has entrance, and optical module is covered in the entrance of optical integration pillar.Optical module has light transmitting surface, and wherein the surface area of light transmitting surface is greater than the sectional area of the entrance of optical integration pillar.Anti-reflecting layer is formed at light transmitting surface.Wherein, incident light penetrates anti-reflecting layer, and penetrates optical module along light-path footpath, re-shoots the entrance in optical integration pillar.
According to conception of the present invention, of the present invention another more extensively implements pattern for providing a kind of optical system, comprises light integration module and light source.Light integration module comprises optical integration pillar, optical module and anti-reflecting layer.Optical integration pillar has entrance, and optical module is covered in the entrance front of optical integration pillar.Optical module has light transmitting surface, and wherein the surface area of light transmitting surface is greater than the sectional area of the entrance of optical integration pillar.Anti-reflecting layer is formed at light transmitting surface.Light source provides incident light beam strikes in anti-reflecting layer.Wherein, incident light penetrates anti-reflecting layer, and penetrates optical module along light-path footpath, re-shoots the entrance in optical integration pillar.
According to conception of the present invention, another pattern of more extensively implementing of the present invention, for providing a kind of light integration module, comprises optical integration pillar, optical module and anti-reflecting layer.Optical integration pillar has entrance, and optical module is optically coupled to the entrance of optical integration pillar.Optical module has light transmitting surface, and wherein the surface area of light transmitting surface is greater than the sectional area of the entrance of optical integration pillar.Anti-reflecting layer is formed at light transmitting surface.Wherein, optical module is arranged at the upstream in light-path footpath, and optical integration pillar is arranged at the downstream in light-path footpath, and incident light penetrates anti-reflecting layer and transmits along this light-path footpath.
Smooth integration module of the present invention and applicable optical system thereof are by being arranged at the front of the entrance of optical integration pillar by the optical module with large surface area, light source incidence is increased in the area of anti-reflecting layer, reduce the density of light and the working temperature of anti-reflecting layer, thus, can anti-reflecting layer be retained while the power promoting light source, reach the advantage of the light passband promoting light integration module entirety.In addition, increased by the area of light source incidence in anti-reflecting layer, make the dispersion of the dust appropriateness being piled up in anti-reflecting layer surface, avoid anti-reflecting layer overheated impaired, reach the advantage maintaining the overall light passband of light integration module.
Accompanying drawing explanation
Fig. 1 be in conventional digital light processing projection system light by the path schematic diagram of light fixture to projection lens.
Fig. 2 is the schematic diagram that light converges at optical integration pillar inlet surface.
Fig. 3 is the light path schematic diagram of the optical system of present pre-ferred embodiments.
Fig. 4 A is the schematic diagram with the light integration module of plano-convex optical lens of the present invention.
Fig. 4 B is the schematic diagram with the light integration module of sheet glass of the present invention.
Fig. 4 C is that of the present invention another has the schematic diagram of the light integration module of plano-convex optical lens.
Fig. 4 D is that of the present invention another has the schematic diagram of the light integration module of sheet glass.
Fig. 4 E is the schematic diagram of the light integration module of the another preferred embodiment of the present invention.
Wherein, description of reference numerals is as follows:
1: optical projection system
2: optical system
11,21: light fixture
11a, 21a: light beam
12,220: optical integration pillar
121: inlet surface
13,23: relay lens group
14,24: total internal reflection prism
15,25: digital micro-mirror device
16,26: projection lens
22: light integration module
221: optical module
2210: translucent element
2211: retaining element
222: anti-reflecting layer
C: space
E1: entrance
E2: outlet
R: light-path footpath
S1: light transmitting surface
S2: back surface
S3: interior surface
S4: composition surface
Embodiment
Some exemplary embodiments embodying feature & benefits of the present invention describe in detail in the explanation of back segment.Be understood that the present invention can have various changes on different patterns, it neither departs from the scope of the present invention, and explanation wherein and graphic be use when explain in itself, and nand architecture is in restriction the present invention.
Refer to Fig. 3 and coordinate Fig. 4 A, Fig. 4 B, Fig. 4 C, Fig. 4 D and Fig. 4 E, Fig. 3 to be the light path schematic diagram of the optical system of present pre-ferred embodiments, Fig. 4 A is the schematic diagram with the light integration module of plano-convex optical lens of the present invention; Fig. 4 B is the schematic diagram with the light integration module of sheet glass of the present invention; Fig. 4 C is that of the present invention another has the schematic diagram of the light integration module of plano-convex optical lens; Fig. 4 D is that of the present invention another has the schematic diagram of the light integration module of sheet glass; And Fig. 4 E is the schematic diagram of the light integration module of the another preferred embodiment of the present invention.As shown in Fig. 3 and Fig. 4 A, optical system 2 (or claiming optical projection system) comprises light source 21, light integration module 22, relay lens group 23, total internal reflection prism 24, image generation device 25 and projection lens 26.Light source 21 can be light fixture, light-emitting diode (LED) module (light-emitting diode, LED) or laser module, in order to provide the light beam 21a of convergence, makes light beam 21a converge at light integration module 22.Image generation device 25 can be digital micro-mirror device.Then, the light beam 21a carrying out homogenising via light integration module 22 sequentially penetrates relay lens group 23 and total internal reflection prism 24, and is incident on image generation device 25.Then, the light through homogenising is carried out regulating and controlling and is projeced on screen (not shown) by projection lens 26 by image generation device 25.Wherein, the part being only actual light beam in the light beam 21a shown in Fig. 3, Fig. 4 A, Fig. 4 B, Fig. 4 C, Fig. 4 D and Fig. 4 E indicates, but the light beam of reality is complete and continuous print form, and light-path footpath R is the path illustrating light to enter light integration module 22 to walk.
Again as shown in Figure 3, light integration module 22 comprises optical integration pillar 220, optical module 221 and anti-reflecting layer 222.Optical integration pillar 220 is the solid cylinder of light-permeable, and its material is better with glass, and wherein, optical integration pillar 220 has an entrance E1 and outlet E2, with when light is after the entrance E1 of optical integration pillar 220, can leave optical integration pillar 220 via outlet E2.Optical module 221 is covered in the entrance E1 front of optical integration pillar 220, and optical module 221 has light transmitting surface S1, and anti-reflecting layer 222 is formed on light transmitting surface S1, the light beam 21a that namely light source 21 provides first penetrates anti-reflecting layer 222 and re-shoots light transmitting surface S1 in optical module 221.Then, light beam 21a penetrates optical module 221 along light-path footpath R and is incident in the entrance E1 of optical integration pillar 220, makes light beam 21a enter optical integration pillar 220.Then, utilize optical integration pillar 220 to carry out inner full-reflection, by beam uniformity and via outlet E2 output.
In addition, as shown in Fig. 4 A, Fig. 4 B, Fig. 4 C, Fig. 4 D and Fig. 4 E, the light transmitting surface S1 of optical module 221 has a surface area, and the entrance E1 of optical integration pillar 220 has a sectional area, and the surface area of light transmitting surface S1 is greater than the sectional area of entrance E1.That is, the present invention utilizes and set up optical module 221 before optical integration pillar 220, anti-reflecting layer 222 is made to be formed at the light transmitting surface S1 of optical module 221, and make optical module 221 be optically coupled to the entrance E1 of optical integration pillar 220, the incident area that light beam 21a is incident in anti-reflecting layer 222 thus can increase, and the density of light can be reduced, and avoid anti-reflecting layer 222 overheated.In addition, anti-reflecting layer 222 can be retained while the power promoting light source 21, reach the advantage of the light passband promoting light integration module 22 entirety.Moreover, along with optical system 2 uses more of a specified duration, the dust being piled up in anti-reflecting layer 222 is more, even if dust changes the energy of light source of absorption into heat energy, increased by the incident area of light source incidence in anti-reflecting layer 222, make the dispersion of the dust appropriateness on the surface being piled up in anti-reflecting layer 222, anti-reflecting layer 222 can be avoided overheated impaired, reach the advantage of the light passband maintaining light integration module 22 entirety.
In some embodiments, optical module 221 can be plano-convex optical lens or sheet glass (as shown in fig. 4 a and fig. 4b).In other embodiments, optical module 221 can be the composite component (as shown in Fig. 4 C and Fig. 4 D) utilizing translucent element 2210 and retaining element 2211 to form.In other embodiments, optical module 221 can be the extension (as shown in Figure 4 E) of optical integration pillar 220.In other words, optical module 221 can be any there is certain thickness and the surface that light can be allowed to pass through amplification assembly, there is light transmitting surface S1, wherein amplification assembly in this surface is arranged at the upstream of light-path footpath R, optical integration pillar 220 is arranged at the downstream of light-path footpath R, and the surface area of the light transmitting surface S1 of surface amplification assembly is greater than the sectional area of the entrance E1 of optical integration pillar 220, to be arranged at the upstream of light-path footpath R by the assembly that increased on surface, increase the incident area being incident in anti-reflecting layer 222, reduce the density of light and the working temperature of antireflecting coating.
Referring again to Fig. 4 A and Fig. 4 B, optical module 221 has light transmitting surface S1 and the back surface S2 relative with light transmitting surface S1, and the incident light being incident in light transmitting surface S1 sequentially penetrates light transmitting surface S1 and back surface S2 along light-path footpath R, re-shoots the entrance E1 in optical integration pillar 220.In the embodiment shown in Fig. 4 A, optical module 221 is plano-convex optical lens, and wherein light transmitting surface S1 can be level and smooth convex surface arbitrarily, and is better with sphere, and back surface S2 is plane.In the embodiment shown in Fig. 4 B, optical module 221 is sheet glass, and light transmitting surface S1 and back surface S2 is all plane.In some embodiments, the back surface S2 of optical module 221 contacts with the entrance E1 of optical integration pillar 220, and utilizes such as adhesive agent, optical module 221 is binded and is fixed on the front of optical integration pillar 220, but not as limit.In a preferred embodiment, optical integration pillar 220 is one-body molded with optical module 221, and in other words, the back surface S2 place that the entrance E1 of optical integration pillar 220 corresponds to optical module 221 is then connected.In some embodiments, the surface area of the back surface S2 of optical module 221 is greater than the sectional area of the outlet E1 of optical integration pillar 220.
Referring again to Fig. 4 C and Fig. 4 D, optical module 221 comprises translucent element 2210 and retaining element 2211, and translucent element 2210 has light transmitting surface S1 and the interior surface S3 relative with light transmitting surface S1.Wherein, translucent element 2210 is fixedly arranged on retaining element 2211, retaining element 2211 is fixedly arranged on optical integration pillar 220, and defines formation one space C by the interior surface S3 of translucent element 2210, retaining element 2211 and optical integration pillar 220, makes interior surface S3 and optical integration pillar 220 interval this space C.Thus, the incident light being incident in light transmitting surface S1 sequentially penetrates light transmitting surface S1, interior surface S3 and space C along light-path footpath R, re-shoot the entrance E1 in optical integration pillar 220, to strengthen the strength of connection of optical module 221 and optical integration pillar 220, and save the cost of light transmissive material.
Again as shown in Figure 4 C, the translucent element 2210 of optical module 221 is plano-convex optical lens, and wherein light transmitting surface S1 can be level and smooth convex surface arbitrarily, and is better with sphere, and interior surface S3 is plane.As shown in Figure 4 D, the translucent element 2210 of optical module is sheet glass, and namely light transmitting surface S1 and interior surface S3 is all plane.In the present embodiment, the material of retaining element 2211 can be plastic cement or ferroalloy, but not as limit.
Referring again to Fig. 4 E, optical module 221 has composition surface S4, composition surface S4 is relative with light transmitting surface S1, the entrance E1 of composition surface S4 and optical integration pillar 220 is connected with group, and the sectional area being preferably the composition surface S4 of optical module 221 equals the sectional area of the entrance E1 of optical integration pillar 220, optical module 221 is made to form the structure of convergent.In some embodiments, the sectional area of the entrance E1 of optical integration pillar 220 is greater than the sectional area of outlet E2, the outer peripheral face of optical module 221 flushes (level) with the outer peripheral face of optical integration pillar 220, optical module 221 and optical integration pillar 220 is made jointly to form tapered configuration, so as to reducing manufacturing cost.In some embodiments, the composition surface S4 of optical module 221 contacts with the entrance E1 of optical integration pillar 220, and utilizes such as adhesive agent, optical module 221 is binded and is fixed on the front of optical integration pillar 220, but not as limit.In a preferred embodiment, optical integration pillar 220 is one-body molded with optical module 221, and in other words, the S4 place, composition surface that the entrance E1 of optical integration pillar 220 corresponds to optical module 221 is then connected.
In sum, smooth integration module of the present invention and applicable optical system thereof are by being arranged at the front of the entrance of optical integration pillar by the optical module with large surface area, light source incidence is increased in the area of anti-reflecting layer, reduce the density of light and the working temperature of anti-reflecting layer, thus, can anti-reflecting layer be retained while the power promoting light source, reach the advantage of the light passband promoting light integration module entirety.In addition, increased by the area of light source incidence in anti-reflecting layer, make the dispersion of the dust appropriateness being piled up in anti-reflecting layer surface, avoid anti-reflecting layer overheated impaired, reach the advantage maintaining the overall light passband of light integration module.
The present invention must be appointed by those skilled in the art and executes craftsman and to think and for modifying as all, so neither de-scope protected as claim institute wish.
Claims (17)
1. a light integration module, comprising:
One optical integration pillar, has an entrance;
One optical module, be covered in this entrance of this optical integration pillar, and this optical module has a light transmitting surface, and wherein a surface area of this light transmitting surface is greater than a sectional area of this entrance of this optical integration pillar; And
One anti-reflecting layer, is formed at this light transmitting surface;
Wherein, an incident light penetrates this anti-reflecting layer, and penetrates this optical module along a light-path footpath, re-shoots this entrance in this optical integration pillar.
2. light integration module as claimed in claim 1, wherein this optical module also has a back surface, this back surface is relative with this light transmitting surface, and this inlet contact of this back surface and this optical integration pillar, make this incident light being incident in this anti-reflecting layer penetrate this light transmitting surface and penetrate this back surface along this light-path footpath, re-shooting in this entrance.
3. light integration module as claimed in claim 1, wherein this optical module also has a composition surface relative with this light transmitting surface, this entrance of this composition surface and this optical integration pillar is connected with group, and a sectional area on this composition surface of this optical module equals this sectional area of this entrance of this optical integration pillar, this optical module is made to form a tapered configuration.
4. light integration module as claimed in claim 3, wherein this optical integration pillar also has an outlet relative with this entrance, this sectional area of this entrance of this optical integration pillar is greater than a sectional area of this outlet, one outer peripheral face of this optical module flushes with an outer peripheral face of this optical integration pillar, makes this optical module and this optical integration pillar jointly form a tapered configuration.
5. light integration module as claimed in claim 1, wherein this optical module is a plano-convex optical lens, and this light transmitting surface is a convex surface.
6. light integration module as claimed in claim 1, wherein this optical module is a sheet glass.
7. light integration module as claimed in claim 1, wherein this optics group system is engaged with this optical integration pillar by an adhesive agent.
8. light integration module as claimed in claim 1, wherein this optical module and this optical integration pillar one-body molded.
9. light integration module as claimed in claim 1, wherein this optical module also comprises a translucent element and a retaining element, this translucent element has an interior surface relative with this light transmitting surface, and this translucent element is fixedly arranged on this retaining element, this retaining element is fixedly arranged on this optical integration pillar, and by this retaining element, this translucent element and this optical integration pillar definition formation one space.
10. light integration module as claimed in claim 9, wherein this translucent element is a plano-convex optical lens, and this light transmitting surface is a convex surface.
11. light integration module as claimed in claim 9, wherein this translucent element is a sheet glass.
12. 1 kinds of optical systems, comprising:
One smooth integration module, comprising:
One optical integration pillar, has an entrance;
One optical module, be covered in this entrance front of this optical integration pillar, and this optical module has a light transmitting surface, wherein a surface area of this light transmitting surface is greater than a sectional area of this entrance of this optical integration pillar; And
One anti-reflecting layer, is formed at this light transmitting surface; And
One light source, provides an incident light beam strikes in this anti-reflecting layer;
Wherein, this incident light penetrates this anti-reflecting layer, and penetrates this optical module along a light-path footpath, re-shoots this entrance in this optical integration pillar.
13. 1 kinds of light integration module, comprising:
One optical integration pillar, has an entrance;
One optical module, be optically coupled to this entrance of this optical integration pillar, and this optical module has a light transmitting surface, and wherein a surface area of this light transmitting surface is greater than a sectional area of this entrance of this optical integration pillar; And
One anti-reflecting layer, is formed at this light transmitting surface;
Wherein, this optical module is arranged at the upstream in a light-path footpath, and this optical integration pillar is arranged at the downstream in this light-path footpath, and an incident light penetrates this anti-reflecting layer and transmits along this light-path footpath.
14. light integration module as claimed in claim 13, wherein this optical module also has a back surface, this back surface is relative with this light transmitting surface, and this inlet contact of this back surface and this optical integration pillar, make this incident light being incident in this anti-reflecting layer penetrate this light transmitting surface and penetrate this back surface along this light-path footpath, re-shooting in this entrance.
15. light integration module as claimed in claim 13, wherein this optical module also has a composition surface relative with this light transmitting surface, this entrance of this composition surface and this optical integration pillar is connected with group, and a sectional area on this composition surface of this optical module equals this sectional area of this entrance of this optical integration pillar, this optical module is made to form a tapered configuration.
16. light integration module as claimed in claim 15, wherein this optical integration pillar also has an outlet relative with this entrance, this sectional area of this entrance of this optical integration pillar is greater than a sectional area of this outlet, one outer peripheral face of this optical module flushes with an outer peripheral face of this optical integration pillar, makes this optical module and this optical integration pillar jointly form a tapered configuration.
17. light integration module as claimed in claim 13, wherein this optical module also comprises a translucent element and a retaining element, this translucent element has an interior surface relative with this light transmitting surface, and this translucent element is fixedly arranged on this retaining element, this retaining element is fixedly arranged on this optical integration pillar, and by this retaining element, this translucent element and this optical integration pillar definition formation one space.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811266863.8A CN109375458A (en) | 2014-01-16 | 2014-12-05 | Light integration module and its applicable optical system |
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| Application Number | Priority Date | Filing Date | Title |
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| US201461928087P | 2014-01-16 | 2014-01-16 | |
| US61/928,087 | 2014-01-16 |
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| CN201811266863.8A Division CN109375458A (en) | 2014-01-16 | 2014-12-05 | Light integration module and its applicable optical system |
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| CN201410737239.7A Pending CN104808421A (en) | 2014-01-16 | 2014-12-05 | Optical integration module and applicable optical system thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109100837A (en) * | 2017-10-04 | 2018-12-28 | 英属维京群岛商祥茂光电科技股份有限公司 | Optical transceiver and its lens unit |
| CN110989273A (en) * | 2019-11-29 | 2020-04-10 | 河南中光学集团有限公司 | Method for eliminating stray light of projector |
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| CN1471647A (en) * | 2000-09-20 | 2004-01-28 | 微阳有限公司 | Light condensing and collecting system using lensed light pipes |
| CN1791818A (en) * | 2003-05-21 | 2006-06-21 | Jds尤尼弗思公司 | System and method for providing a uniform source of light |
| CN2769919Y (en) * | 2005-03-10 | 2006-04-05 | 上海信诚至典网络技术有限公司 | Polarized light converter |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109100837A (en) * | 2017-10-04 | 2018-12-28 | 英属维京群岛商祥茂光电科技股份有限公司 | Optical transceiver and its lens unit |
| CN110989273A (en) * | 2019-11-29 | 2020-04-10 | 河南中光学集团有限公司 | Method for eliminating stray light of projector |
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| CN109375458A (en) | 2019-02-22 |
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Application publication date: 20150729 |