CN2678283Y - Digital optical display rear-projector with mirror gravity compensation device - Google Patents
Digital optical display rear-projector with mirror gravity compensation device Download PDFInfo
- Publication number
- CN2678283Y CN2678283Y CN 200320104444 CN200320104444U CN2678283Y CN 2678283 Y CN2678283 Y CN 2678283Y CN 200320104444 CN200320104444 CN 200320104444 CN 200320104444 U CN200320104444 U CN 200320104444U CN 2678283 Y CN2678283 Y CN 2678283Y
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- CN
- China
- Prior art keywords
- speculum
- reflector
- gravity
- projector
- optical display
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Transforming Electric Information Into Light Information (AREA)
Abstract
The utility model relates to a digital optical display back projector with a reflector gravity compensation device, which comprises a reflector, a machine base and a reflector gravity compensation device, wherein the reflector is fixedly supported on the machine base through a supporting member. The reflector gravity compensation device comprises a top beam arranged on the top edge of the reflector, and a regulating member arranged on the top beam; the regulating member and the top beam are screwed connection. A pad is arranged between the reflector and the top beam. Because of the arrangement of the regulating member, the curving reflector upwards restores the original shape by controlling the upwards-butting height of the regulating member according to the size of image deformation quantity to compensate the linear bending of upper part images to distort because of gravity deformation. The regulating member does not directly contact the reflector through the arrangement of the pad, and consequently the reflector is prevented from being worn.
Description
[technical field]
The utility model is about the digital optical display rear-projector, especially about a kind of digital optical display rear-projector who has the speculum gravity-compensated device.
[background technology]
Digital optical display rear-projector's basic structure is by the lamp optical system with the beam direction liquid crystal light valve of light emitted, with will amplify because of the light beam that liquid crystal light valve form image information, reflection by speculum again, the projection optical system that projects on the screen is formed, and reflection once reflection and two kinds of secondary reflections, no matter once or secondary reflection, in actual production process, factor word light display rear projector's size is bigger, and a bigger speculum is all arranged, and this speculum is made by glass, because of causing the upper edge, action of gravity obviously sink, cause light path distortion, thereby project to the image top linear bending of screen and distortion influences image display effect.
[utility model content]
The purpose of this utility model is to provide a kind of energy compensatory reflex mirror because of the linear diastrophic digital optical display rear-projector who has the speculum gravity-compensated device of the image that gravity deformation produced.
The purpose of this utility model is achieved in that this digital optical display rear-projector who has the speculum gravity-compensated device comprises speculum, support and speculum gravity-compensated device, this speculum is fixedly supported on the support by strutting piece, and this speculum gravity-compensated device comprises the back timber that is installed in reflection vertex edge and is arranged on regulating part on this back timber.
Between described regulating part and back timber for being threaded.
Be provided with pad between described speculum and the back timber.
Compared with prior art, the utlity model has following advantage: 1) according to the size of anamorphose amount, by the amount of height that the regulating and controlling part upwards pushes up, crooked speculum is upwards resiled, compensate upper image linear bending distortion because of gravity deformation produced; 2), regulating part is not directly contacted with speculum, thereby prevent the speculum that weares and teares by the setting of pad.
[description of drawings]
Fig. 1 is the structural representation that the utility model has the digital optical display rear-projector of speculum gravity-compensated device.
Fig. 2 is the structural representation that the utility model has mirror portion among the digital optical display rear-projector of speculum gravity-compensated device.
Fig. 3 is the partial enlarged drawing at P indication place among Fig. 2.
Fig. 4 is that set screw and mirror structure concern schematic diagram.
[embodiment]
Please in conjunction with consulting Fig. 1 to Fig. 4, the digital optical display rear-projector that the utility model has the speculum gravity-compensated device comprises support 7, speculum 1 and speculum gravity-compensated device, speculum 1 periphery is fixing with metal picture frame 5, this metal picture frame 5 passes through the fastening one of connector with strutting piece, in the present embodiment, this strutting piece is four root posts 6 that vertical stretches out, and this strutting piece is fixedly mounted on the support 7, thereby makes relative fixed between this speculum 1 and the support 7.The metal picture frame 5 on this edge, speculum 1 top is defined as back timber 3, this back timber 3 is provided with regulating part 2, this regulating part 2 is a screw in the present embodiment, the parts that can certainly have screw thread for other, back timber 3 is provided with the through hole that runs through with screw thread, and this regulating part 2 is installed on the back timber 3 in the mode that is threaded by this through hole.Because the maximum distortion of speculum 1 is in the middle part on this edge, speculum 1 top, so this regulating part 2 is arranged on this top along the middle part.Directly contact and this speculum that weares and teares with speculum 1 for fear of this regulating part 2, so be provided with one deck pad 4 between this speculum 1 and back timber 3, this pad 4 is an elastic material, thereby regulating part 2 is directly contacted with this pad 4.Certainly, this regulating part 2 also can directly contact with speculum 1, thereby directly forces on the speculum 1 in adjustment process.This back timber 3 and this regulating part 2 are described speculum gravity-compensated device.
When sink in speculum 1 middle part, only need be, and the linear change of observing the image top regulating part 2 upwards precessions, this regulating part 2 forces in the edge, top of speculum 1 by pad 4, and this top along top upwards, thereby a crooked linear compensation is returned; When regulated quantity was excessive, this regulating part 2 circled round to regulate can make image linear correct.
According to the size of anamorphose amount, by the amount of height that set screw is upwards pushed up, crooked speculum 1 is upwards resiled, compensate upper image linear bending distortion because of gravity deformation produced.
Claims (7)
1. digital optical display rear-projector who has the speculum gravity-compensated device, comprise speculum and support, this speculum is fixedly supported on the support by strutting piece, it is characterized in that: also comprise the speculum gravity-compensated device, it comprises the back timber that is installed in reflection vertex edge and is arranged on regulating part on this back timber.
2。The digital optical display rear-projector who has the speculum gravity-compensated device as claimed in claim 1 is characterized in that: the periphery of described speculum is fixed with picture frame, and this picture frame is fixedlyed connected with strutting piece.
3. the digital optical display rear-projector who has the speculum gravity-compensated device as claimed in claim 1 is characterized in that: between described regulating part and back timber for being threaded.
4. the digital optical display rear-projector who has the speculum gravity-compensated device as claimed in claim 3 is characterized in that: described regulating part is threaded.
5. as any described digital optical display rear-projector who has the speculum gravity-compensated device of claim 1-4, it is characterized in that: described regulating part is arranged on the reflection vertex along the distortion maximum.
6. the digital optical display rear-projector who has the speculum gravity-compensated device as claimed in claim 5 is characterized in that: described regulating part is arranged on the middle part on reflection vertex edge.
7. as any described digital optical display rear-projector who has the speculum gravity-compensated device of claim 1-4, it is characterized in that: be provided with pad between described speculum and the back timber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320104444 CN2678283Y (en) | 2003-12-13 | 2003-12-13 | Digital optical display rear-projector with mirror gravity compensation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320104444 CN2678283Y (en) | 2003-12-13 | 2003-12-13 | Digital optical display rear-projector with mirror gravity compensation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2678283Y true CN2678283Y (en) | 2005-02-09 |
Family
ID=34580674
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200320104444 Expired - Fee Related CN2678283Y (en) | 2003-12-13 | 2003-12-13 | Digital optical display rear-projector with mirror gravity compensation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2678283Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105403998A (en) * | 2015-12-14 | 2016-03-16 | 广东威创视讯科技股份有限公司 | Adjustable reflector compensation distortion apparatus, and distortion compensation method of splicing display screen |
| CN115268011A (en) * | 2022-09-29 | 2022-11-01 | 中国科学院长春光学精密机械与物理研究所 | Gravity unloading device for reflector |
-
2003
- 2003-12-13 CN CN 200320104444 patent/CN2678283Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105403998A (en) * | 2015-12-14 | 2016-03-16 | 广东威创视讯科技股份有限公司 | Adjustable reflector compensation distortion apparatus, and distortion compensation method of splicing display screen |
| CN115268011A (en) * | 2022-09-29 | 2022-11-01 | 中国科学院长春光学精密机械与物理研究所 | Gravity unloading device for reflector |
| CN115268011B (en) * | 2022-09-29 | 2022-12-09 | 中国科学院长春光学精密机械与物理研究所 | Gravity unloading device for reflector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050209 Termination date: 20100113 |