CN203178659U - LCOS projection ray machine - Google Patents
LCOS projection ray machine Download PDFInfo
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- CN203178659U CN203178659U CN 201320198285 CN201320198285U CN203178659U CN 203178659 U CN203178659 U CN 203178659U CN 201320198285 CN201320198285 CN 201320198285 CN 201320198285 U CN201320198285 U CN 201320198285U CN 203178659 U CN203178659 U CN 203178659U
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- 238000003384 imaging method Methods 0.000 claims abstract description 86
- 230000003287 optical effect Effects 0.000 claims abstract description 69
- 230000003321 amplification Effects 0.000 claims abstract description 20
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 20
- 238000005286 illumination Methods 0.000 claims abstract description 18
- 230000005494 condensation Effects 0.000 claims abstract description 8
- 238000009833 condensation Methods 0.000 claims abstract description 8
- 230000010287 polarization Effects 0.000 claims description 44
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 13
- 229910052782 aluminium Inorganic materials 0.000 claims description 13
- 239000000758 substrate Substances 0.000 claims description 13
- 125000006850 spacer group Chemical group 0.000 claims description 6
- 238000003466 welding Methods 0.000 claims description 3
- 239000012528 membrane Substances 0.000 description 8
- XECAHXYUAAWDEL-UHFFFAOYSA-N acrylonitrile butadiene styrene Chemical compound C=CC=C.C=CC#N.C=CC1=CC=CC=C1 XECAHXYUAAWDEL-UHFFFAOYSA-N 0.000 description 4
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 4
- 239000004676 acrylonitrile butadiene styrene Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000000295 emission spectrum Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
An LCOS projection ray machine comprises a light source system, a condensation mechanism, an LCOS display system, a polarizing mechanism and an imaging amplification optical path system. The light source system, the condensation mechanism and the polarizing mechanism which are arranged in sequence and have central points on the same straight line form an illumination optical path. The straight line where the central points of the light source system, the condensation mechanism and the polarizing mechanism locate is an illumination optical axis. The imaging amplification optical path system, the polarizing mechanism and the LCOS display system which are arranged in sequence and have central points on the same straight line form an imaging optical path. The straight line where the central points of the imaging amplification optical path system, the polarizing mechanism and the LCOS display system locate is an imaging optical axis. The imaging optical axis is vertical to the illumination optical axis. The polarizing mechanism equally divides right angles formed by the light source system, the condensation mechanism and imaging amplification optical path system. The imaging amplification optical path system comprises an imaging lens and an amplifying lens, central points of the imaging lens and the amplifying lens are on the imaging optical axis, and the imaging lens is close to the polarizing mechanism. The LOCS projection ray machine has a larger projection area in a shorter projection distance compared to a traditionally LOCS projection ray machine.
Description
Technical Field
The utility model relates to a photoelectric instrument technical field especially relates to a LCOS projection ray apparatus.
Background
With the matching use of the LCOS (liquid Crystal on silicon) display technology and the LED light source, the LCOS projection light engine has a smaller volume, and is gradually developed into a portable micro LCOS projection light engine. The miniature LCOS projection optical machine generally adopts a single-chip optical engine, has the advantages of low cost, small size and the like, and has wide application prospect. The miniature LCOS projector can be applied to the fields of portable business projection, miniature meeting demonstration, personal cinema, field display projection, educational entertainment, output display of digital products and the like. Brings great convenience to the work, study and life entertainment of people. However, the micro LCOS projector still has many technical bottlenecks to overcome, for example, after the light is modulated by the LCOS display system (including the imaging information), the light is imaged, and then has a larger projection area at a longer projection distance. However, the conventional micro LCOS projector cannot achieve a larger projection area at a shorter projection distance, thereby limiting the further application of the micro LCOS projector.
SUMMERY OF THE UTILITY MODEL
Based on this, it is necessary to provide an LCOS projector with a larger projection area at a shorter projection distance.
An LCOS projection optical machine comprises a light source system, a light condensing mechanism, an LCOS display system, a polarization mechanism and an imaging amplification light path system; wherein,
the light source system, the light gathering mechanism and the polarization mechanism which are sequentially arranged and have the same straight center point form an illumination light path, and the straight line where the center points of the light source system, the light gathering mechanism and the polarization mechanism are located is an illumination optical axis;
the imaging amplification light path system, the polarization mechanism and the LCOS display system which are sequentially arranged and have the same straight center point form an imaging light path, and the straight line where the center points of the imaging amplification light path system, the polarization mechanism and the LCOS display system are located is an imaging optical axis;
the imaging optical axis is vertical to the illumination optical axis, and the vertical foot is the central point of the polarization mechanism;
the polarization mechanism bisects a right angle formed by the light source system, the light condensation mechanism and the imaging amplification light path system;
the imaging amplification optical path system comprises an imaging lens and an amplification lens, wherein the central point of the imaging lens is located on the imaging optical axis, and the imaging lens is close to the polarization mechanism.
In one embodiment, the distance between the light source system and the light focusing mechanism on the illumination optical axis is 0.57-0.97 mm, and the distance between the light focusing mechanism and the light polarizing mechanism on the illumination optical axis is 6.0-8.0 mm.
In one embodiment, the separation distance between the LCOS display system and the polarization mechanism on the imaging optical axis is 4.7-5.7 mm, the separation distance between the polarization mechanism and the imaging lens on the imaging optical axis is 2.0-5.0 mm, and the separation distance between the imaging lens and the magnifying lens on the imaging optical axis is 16.1-18.1 mm.
In one embodiment, the light source system comprises an aluminum substrate and LED lamps fixed on the aluminum substrate.
In one embodiment, the LED lamp is fixed on the aluminum substrate by screwing or welding.
In one embodiment, the light-focusing mechanism includes an aspheric lens and a spacer ring for isolating the light source system and compressing the aspheric lens.
In one embodiment, the LCOS display system includes a fixing panel and an LCOS chip fixed on the fixing panel, wherein a connector is disposed on the fixing panel, and the connector is used for connecting the LCOS chip with an external device.
In one embodiment, the polarizing mechanism is a DBEF membrane, and the thickness of the DBEF membrane is 0.25-0.55 mm.
In one embodiment, the imaging lens is a positive lens with a focal length of 5.8 mm; the magnifying lens is a negative lens, and the focal length is-3.05 mm.
When the LCOS projection optical machine works, the light source system provides light rays, and the light rays are processed by the light condensation mechanism and then projected onto the polarization mechanism. Light rays in a certain polarization direction directly penetrate through the polarization mechanism without changing the propagation direction. The light in a certain polarization direction is reflected by the DBEF membrane, then vertically projected onto the LCOS display screen system, modulated by the LCOS display screen system (containing imaging information), reflected to the DBEF membrane, penetrates through the DBEF membrane and reaches the imaging lens, imaged by the imaging lens, and then imaged (image) reaches the magnifying lens, magnified and output by the magnifying lens, and the projection process is completed. Due to the matching use of the imaging lens and the magnifying lens, the LCOS projection light machine has a larger projection area on a shorter projection distance compared with a traditional LCOS projection light machine.
Drawings
FIG. 1 is a schematic diagram of an LCOS projector light engine according to an embodiment;
FIG. 2 is a schematic diagram of an LCOS projector in FIG. 1;
FIG. 3 is a perspective view of the LCOS projector light engine of FIG. 2;
FIG. 4 is a partial cross-sectional view of the LCOS projector light engine of FIG. 3;
fig. 5 is a rear view of the LCOS light projector of fig. 3.
Detailed Description
In order to facilitate understanding of the present invention, the LCOS projector of the present invention will be described more fully with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
As shown in fig. 1-2, an LCOS projection optical engine 100 of an embodiment includes a light source system 110, a light condensing mechanism 120, an LCOS display system 130, a polarization mechanism 140, an image-magnifying optical path system 150, and a housing 160.
The light source system 110, the light focusing mechanism 120 and the polarization mechanism 140, which are arranged in sequence and have common straight centers, form an illumination light path, and the straight line where the centers of the light source system 110, the light focusing mechanism 120 and the polarization mechanism 140 are located is an illumination optical axis.
The imaging amplification optical path system 150, the polarization mechanism 140 and the LCOS display system 130 which are sequentially arranged and have the same straight center point form an imaging optical path, and the straight line where the center points of the imaging amplification optical path system 150, the polarization mechanism 140 and the LCOS display system 130 are located is an imaging optical axis.
The imaging optical axis is perpendicular to the illumination optical axis, and the foot is the central point of the polarization mechanism 140. The polarization mechanism 140 bisects the right angle formed by the light source system 110, the light focusing mechanism 120, and the imaging magnification optical path system 150.
The imaging magnification optical path system 150 includes an imaging lens 152 and a magnification lens 154 having their center points on the imaging optical axis; the imaging lens 152 is close to the polarization mechanism 140.
The housing 160 is used for accommodating the light source system 110, the light focusing mechanism 120, the LCOS display system 130, the polarization mechanism 140, and the image magnifying optical path system 150.
In the present embodiment, the distance between the light source system 110 and the light condensing mechanism 120 on the illumination optical axis is 0.57 to 0.97 mm; the distance between the light-gathering mechanism 120 and the light-deflecting mechanism 140 on the illumination optical axis is 6.0-8.0 mm.
The spacing distance between the LCOS display system 130 and the polarization mechanism 140 on the imaging optical axis is 4.7-5.7 mm; the distance between the polarizing mechanism 140 and the imaging lens 152 on the imaging optical axis is 2.0-5.0 mm; the distance between the imaging lens 152 and the magnifying lens 154 on the imaging optical axis is 16.1-18.1 mm.
In this embodiment, as shown in fig. 2 to 4, the light source system 110 includes an aluminum substrate 112, an LED lamp 114 fixed on the aluminum substrate 112, a locking plate 116 for fixedly pressing the aluminum substrate 112, a threaded through hole 118 opened on the locking plate 116, and a screw 119 matched with the threaded through hole 118.
The aluminum substrate 112 has a good heat dissipation characteristic, so that heat generated by the LED lamp 114 can be transferred out of the LCOS projection light machine 100 in time, and the LCOS projection light machine 100 is prevented from being in a high temperature condition. Meanwhile, the LED lamp can be protected, and the condition that the LED lamp is overheated and fails is avoided.
The LED lamp 114 is an ideal light source for a portable miniature LCOS projector engine. Because the LED lamp 114 has the characteristics of long service life and small size, the service life of the LCOS projection light engine can be prolonged and the size of the LCOS projection light engine can be reduced. Meanwhile, the LED lamp 114 has the characteristics of low driving voltage, narrow light emission spectrum (close to monochromatic light), and the like, and is favorable for improving the image quality. And the LED lamp can not send the light of ultraviolet and infrared wave band, need not set up ultraviolet and infrared filter in the LCOS projection ray apparatus to can further reduce the volume of LCOS projection ray apparatus. It is understood that in other embodiments, the LED lamp 114 may be replaced by a light source such as a UHP (Ultra High Performance) lamp.
The LED lamp 114 is fixed on the aluminum substrate 112 by screwing, so that the subsequent replacement of the LED lamp 114 is facilitated. It is understood that in other embodiments, the LED lamp 114 is also fixed on the aluminum substrate 112 by welding.
When the LCOS projector 100 is assembled, the aluminum substrate 112 with the LED lamp is pressed by the locking plate 116, the threaded through hole 118 formed on the edge of one side of the locking plate 116, and the screw 119 matched with the threaded through hole 118, and fixed on the housing 160. In order to make the LCOS projector 100 lighter in weight and wear resistant, the material of the lock plate 116 is preferably ABS (Acrylonitrile butadiene Styrene copolymers).
In the present embodiment, as shown in fig. 2 to 4, the light collecting mechanism 120 includes a spacer ring 122 and an aspherical lens 124.
The spacer ring 122 is disposed between the LED lamp 114 and the aspheric lens 124 for compressing the aspheric lens 124 and for isolating the LED lamp 114 from the aspheric lens 124. The spacer ring 122 can reduce stray light caused by light emitted from the LED lamp, thereby improving the contrast of the image output by the LCOS projector 100. The material of the spacer ring 122 is preferably ABS.
The light incident surface and the light emitting surface of the aspheric lens 124 are both convex aspheric surfaces. The aspheric lens 124 is used for converting a point light source emitted by the LED lamp 114 into a line light source for a subsequent imaging process; in order to reduce the mass of the LCOS projection optical system 100, the aspheric lens 124 is an acrylic lens with the advantages of light weight, low cost, easy molding, etc.
In this embodiment, as shown in fig. 2 and fig. 5, the LCOS display system 130 includes a fixing panel 132 and an LCOS chip 134 fixed on the fixing panel 132. The fixed panel 132 is provided with a connector 136, and the connector 136 is used for connecting the LCOS chip 134 with an external device. .
The LCOS chip 134 is fixed to the fixing panel 132 by soldering. The connector 136 is used to connect an FPC (Flexible Printed Circuit) signal line (not shown), so that the LCOS chip 134 is connected to an external device through the FPC signal line. The LCOS chip 134 is an LCOS-MVQ12-2 display chip produced by Changjiang Liwei GmbH of Shenzhen.
In the present embodiment, the polarization mechanism 140 is a DBEF film (Dual Brightness enhancement film), and the DBEF film is a reflective polarization Brightness enhancement film. After the incident light is projected onto the DBEF film, the incident light and the DBEF film form an angle of 45 degrees, and the light in a certain polarization direction directly penetrates through the DBEF film without changing the propagation direction due to the polarization characteristics of the DBEF film. After being reflected by the DBEF film, the light with a certain polarization direction is vertically projected onto the LCOS display screen system 130. The DBEF film is used to replace the conventional PBS film as the Polarization mechanism 140, so that the LCOS projector 100 has the advantages of small size, light weight, and the like, and is also beneficial to reducing the cost.
In the present embodiment, the imaging magnification optical path system 150 includes an imaging lens 152 and a magnification lens 154 having their center points on the imaging optical axis, and the imaging lens 152 is close to the polarization mechanism 140. The imaging lens 152 and the magnifying lens 154 are oppositely arranged, and the distance between the imaging lens 152 and the magnifying lens 154 on the imaging optical axis is 16.1-18.1 mm. The imaging lens 152 is a positive lens with a focal length of 5.8 mm. The light incident surface and the light emitting surface of the imaging lens 152 are both convex aspheric curved surfaces. The magnifying lens 154 is a negative lens with a focal length of-3.05 mm. The light incident surface of the magnifying lens 154 is a concave aspheric surface, and the light emitting surface is a hybrid surface. The imaging lens 152 is used to image the light modulated by the LCOS display screen system. The magnifying group lens 154 is used to magnify and output the image. Due to the cooperation of the imaging lens 152 and the magnifying lens 154, the LCOS projection light machine 100 has a larger projection area in a shorter projection distance than a conventional LCOS projection light machine. In addition, in order to reduce the mass of the LCOS projection optical system 100, the imaging lens 152 and the magnifying lens 154 are acrylic lenses.
In the present embodiment, as shown in fig. 2-5, the housing 160 includes an upper shell 162 and a lower shell 164 cooperating with the upper shell 162. The upper housing 162 and the lower housing 164 are made of ABS.
The upper housing 162 is provided with a cavity integrally formed with the upper housing 162, and the surfaces of the cavity contacting and facing the upper housing 162 have no wall. The cavity is similar to a water pipe in structure, and has walls at the periphery and no walls at two ends. The cavity is used for accommodating the light source system 110 and the light focusing mechanism 120, and a threaded hole is formed in the wall of the cavity at a position corresponding to the threaded through hole 118, so that the light source system 110 and the light focusing mechanism 120 are fixed in the cavity.
The upper housing 162 and the lower housing 164 used in cooperation with the upper housing 162 form a cavity for accommodating the LCOS display system 130, the polarization mechanism 140, and the imaging amplification optical path system 150, and are fixed by four screws, four threaded through holes disposed on the upper housing 162, and four threaded holes disposed on the lower housing 164.
When the LCOS projection optical machine works, the light source system provides light rays, and the light rays are processed by the light condensation mechanism and then projected onto the polarization mechanism. Light rays in a certain polarization direction directly penetrate through the polarization mechanism without changing the propagation direction. The light in a certain polarization direction is reflected by the DBEF membrane, then vertically projected onto the LCOS display screen system, modulated by the LCOS display screen system (containing imaging information), reflected to the DBEF membrane, penetrates through the DBEF membrane and reaches the imaging lens, imaged by the imaging lens, and then imaged (image) reaches the magnifying lens, magnified and output by the magnifying lens, and the projection process is completed. Due to the matching use of the imaging lens and the magnifying lens, the LCOS projection light machine has a larger projection area on a shorter projection distance compared with a traditional LCOS projection light machine.
The technical parameters of the LCOS projector as shown in fig. 2-5 are:
a fixed focus LCOS projection optical machine;
projection distance (distance from the center of the side of the magnifying lens close to the projection screen): 40-50 mm;
area of the projection screen: (110-120 mm) × (86.5-94.36 mm);
screen size: 5.66-5.9 cun;
depth of field: plus or minus 5.0 mm;
display resolution: 320*240.
Therefore, the LCOS optical projector can be embedded in a handheld mobile device such as a mobile phone and a digital camera, and provides a larger projection area for the handheld mobile device at a shorter projection distance. Therefore, the handheld mobile equipment comprising the LCOS projection optical machine has high-definition and high-brightness image display.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (9)
1. The LCOS projection optical machine is characterized by comprising a light source system, a light condensing mechanism, an LCOS display system, a polarization mechanism and an imaging amplification light path system; wherein,
the light source system, the light gathering mechanism and the polarization mechanism which are sequentially arranged and have the same straight center point form an illumination light path, and the straight line where the center points of the light source system, the light gathering mechanism and the polarization mechanism are located is an illumination optical axis;
the imaging amplification light path system, the polarization mechanism and the LCOS display system which are sequentially arranged and have the same straight center point form an imaging light path, and the straight line where the center points of the imaging amplification light path system, the polarization mechanism and the LCOS display system are located is an imaging optical axis;
the imaging optical axis is vertical to the illumination optical axis, and the vertical foot is the central point of the polarization mechanism;
the polarization mechanism bisects a right angle formed by the light source system, the light condensation mechanism and the imaging amplification light path system;
the imaging amplification optical path system comprises an imaging lens and an amplification lens, wherein the central point of the imaging lens is positioned on the imaging optical axis, and the imaging lens is close to the polarization mechanism.
2. The LCOS projector as claimed in claim 1, wherein the distance between the light source system and the light focusing mechanism on the illumination optical axis is 0.57-0.97 mm, and the distance between the light focusing mechanism and the light deflecting mechanism on the illumination optical axis is 6.0-8.0 mm.
3. The LCOS projection optical engine according to claim 1, wherein the distance between the LCOS display system and the polarizer on the imaging optical axis is 4.7-5.7 mm, the distance between the polarizer and the imaging lens on the imaging optical axis is 2.0-5.0 mm, and the distance between the imaging lens and the magnifying lens on the imaging optical axis is 16.1-18.1 mm.
4. The LCOS projector as claimed in claim 1, wherein the light source system comprises an aluminum substrate and an LED lamp fixed on the aluminum substrate.
5. The LCOS projector as claimed in claim 4, wherein the LED lamp is fixed on the aluminum substrate by screwing or welding.
6. The LCOS projector as claimed in claim 1, wherein the condensing mechanism comprises an aspheric lens and a spacer ring for isolating the light source system and compressing the aspheric lens.
7. The LCOS projection light engine of claim 1, wherein the LCOS display system comprises a fixing panel and an LCOS chip fixed on the fixing panel, and a connector is disposed on the fixing panel and used for connecting the LCOS chip with an external device.
8. The LCOS projector as claimed in claim 1, wherein the polarizer is a DBEF film, and the DBEF film has a thickness of 0.25-0.55 mm.
9. The LCOS projector as claimed in claim 1, wherein the imaging lens is a positive lens with a focal length of 5.8 mm; the magnifying lens is a negative lens, and the focal length is-3.05 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320198285 CN203178659U (en) | 2013-04-18 | 2013-04-18 | LCOS projection ray machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320198285 CN203178659U (en) | 2013-04-18 | 2013-04-18 | LCOS projection ray machine |
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| CN203178659U true CN203178659U (en) | 2013-09-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201320198285 Expired - Fee Related CN203178659U (en) | 2013-04-18 | 2013-04-18 | LCOS projection ray machine |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103235471A (en) * | 2013-04-18 | 2013-08-07 | 深圳市长江力伟股份有限公司 | LCOS (liquid crystal on silicon) projection light machine |
| CN118759730A (en) * | 2024-09-03 | 2024-10-11 | 宁波舜宇光电信息有限公司 | Relay projection assembly, projection optical machine and assembly method thereof |
-
2013
- 2013-04-18 CN CN 201320198285 patent/CN203178659U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103235471A (en) * | 2013-04-18 | 2013-08-07 | 深圳市长江力伟股份有限公司 | LCOS (liquid crystal on silicon) projection light machine |
| CN118759730A (en) * | 2024-09-03 | 2024-10-11 | 宁波舜宇光电信息有限公司 | Relay projection assembly, projection optical machine and assembly method thereof |
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