CN2901741Y - Projector and its optical sensing module - Google Patents
Projector and its optical sensing module Download PDFInfo
- Publication number
- CN2901741Y CN2901741Y CN 200620002109 CN200620002109U CN2901741Y CN 2901741 Y CN2901741 Y CN 2901741Y CN 200620002109 CN200620002109 CN 200620002109 CN 200620002109 U CN200620002109 U CN 200620002109U CN 2901741 Y CN2901741 Y CN 2901741Y
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- China
- Prior art keywords
- sensing module
- smooth
- light
- projector
- feed opening
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Abstract
The utility model of projector comprises a radium device generating beams, a micro lens element which can reflect the beams to an imaging area and a non-imaging area, and a photo sensor module arranged on the non-imaging area. The photo sensor module comprises a shell with a photo input opening, a photo sensor module arranged on the shell and an opening adjusting system used to adjust the effective size of the photo input opening. The utility model can adjust the overall sensitivity of the photo sensor by varying the effective size of the photo input opening.
Description
Technical field
This creation relates to a kind of projector and its light sensing module, relates in particular to a kind of intensity of reflected light of direct pick-up micro-mirror element and adjusts projector and its light sensing module of sensitivity by changing the input light quantity.
Background technology
In all kinds of large-scale advertisement billboard, video wall has been widely used in the surging lively merchant district of the crowd, and the sound and light program of the excellence by video wall causes consumer's attentiveness, and then reaches the purpose of advertisement marketing.
Fig. 1 is the schematic diagram of the video wall 60 of a routine.Described video wall 60 comprises four display unit 62A, 62B, 62C and 62D, and it is by a mother picture 70 being divided into four sprite 72A, 72B, 72C and 72D, being shown in four display unit 62A, 62B, 62C and 62D more respectively.By the combination of described four display unit 62A, 62B, 62C and 62D, the mode that described mother picture 70 can quadruplication shows.The brightness of each display unit 62A, 62B, 62C and 62D must be consistent, just can present uniform whole image quality.But the element of each display unit 62A, 62B, 62C and 62D is often because difference and have different brightness each other causes bad image quality.
Routine techniques is the brightness of being used an exterior light detectors measure each display unit 62A, 62B, 62C and 62D by the technical staff, control the power of light-emitting device (for example wick) more according to this and adjust the brightness of each display unit 62A, 62B, 62C and 62D, quite not convenient.
The utility model content
The main purpose of this creation provides a kind of intensity of reflected light of direct pick-up micro-mirror element and adjusts projector and its light sensing module of whole sensitivity by changing the input light quantity.
For achieving the above object, this creation proposes a kind of projector, and it comprises a light-emitting device, that can produce light beam can be with described beam reflection to the micro-mirror element (can adopt numeral or analog control) in an imaging district and a non-imaging district, the light sensing module that an image-displaying member and that is arranged at described imaging district is arranged at described non-imaging district.Described smooth sensing module comprises a housing, with a smooth feed opening and is arranged at an optical sensor and an opening adjusting device in order to the effective dimensions of adjusting described smooth feed opening in the described housing.Preferably, described opening adjusting device comprises one and covers the bolt of described opening or the projection of covering described opening by slip by rotation, and the inner surface of described housing can be usable reflection material or coating reflecting material.
Furthermore, the effective dimensions of the light feed opening of the light sensing module of this creation by changing described smooth sensing module changes the input light quantity of described housing, and then adjusts the whole sensitivity of light sensing module.Specific, if the optical sensor of described smooth sensing module is to be in saturation condition, rotate described bolt so or the described projection of sliding is covered described smooth feed opening and reduced the input light quantity that enters described housing with part; Otherwise, if the output signal of the optical sensor of described smooth sensing module is low excessively, then rotate described bolt or the described projection of sliding with the effective dimensions that increases the defeated opening of described light and increase the input light quantity that enters described housing.
The projector of this creation utilizes built-in light sensing module to measure the intensity of reflected light of described micro-mirror element, and described smooth sensing module can change the effective dimensions of described smooth feed opening by described opening adjusting device, and adjusts the whole sensitivity of described smooth sensing module.
Description of drawings
Fig. 1 is the schematic diagram of the video wall of a routine; With
The demonstrate projector of this creation of Fig. 2; The demonstrate light sensing module of this creation of Fig. 3 and Fig. 4.
Embodiment
The demonstrate projector 30 of this creation of Fig. 2.Described projector 30 comprises the integrated pipe 38 of light beam that a light-emitting device 35, that can send light beam 36 to one presumptive area 38A is arranged at described presumptive area 38A, the image-displaying member (for example screen of a video wall) 44 and that a micro-mirror element (micromirror device) 42, that described light beam 36 can be reflexed to an imaging district and a non-imaging district is arranged at described imaging district is arranged at the light sensing module 50 in described non-imaging district.
Described light-emitting device 35 comprises the speculum 34 that a wick 32 and that can produce light beam 36 can be assembled described light beam 36 to described presumptive area 38A.The integrated pipe 38 of described light beam can be the hollow tube of inner surface coating reflecting material, but the intensity distributions of the described light beam 36 of homogenizing.Furthermore, described projector 30 can comprise a colour wheel 46, a relay lens 40, a projection lens 48 in addition.Preferably, described speculum 34 is elliptical reflectors, and described wick 32 is to be arranged on the focus of described elliptical reflector 34, and another focus of described speculum 34 is to be positioned at described presumptive area 38A.
Described micro-mirror element 42 has an active surface 20 and a plurality of micro mirror 24 on the described active surface 20 (for the purpose of clear, Fig. 2 only demonstrate a micro mirror 24) that is arranged at.Described micro mirror 24 is to spend activity in-20 scopes of spending with described active surface 20 inclinations+20, and described light beam 36 is the active surfaces 20 that incide described micro-mirror element 42 with the incidence angle that (is preferably 20 degree) between the 18-22 degree.By setting the angle of described micro mirror 24, the light beam 36 that incides described micro mirror 24 will be reflected to described image-displaying member 44 (being folded light beam 42A) or described smooth sensing module 50 (being folded light beam 42B).
The demonstrate light sensing module 50 of this creation of Fig. 3 and Fig. 4.Described smooth sensing module 50 comprises a housing 52, with a smooth feed opening 54 and is arranged at an optical sensor 56 and an opening adjusting device 58 in order to the effective dimensions (available size) of adjusting described smooth feed opening 54 in the described housing 52.Specific, for the purpose of clear, the loam cake of described housing 52 is not shown among the figure; The effective dimensions of described smooth feed opening 54 is meant the openings of sizes that can supply described folded light beam 42B to enter.Described opening adjusting device 58 comprise one by rotation part cover the bolt 59A (person as shown in Figure 3) of described smooth feed opening 54 or the projection 59B (as shown in Figure 4) that slides covers described smooth feed opening 54 with part.The inner surface of described housing 52 can be coated with reflecting material (or the effect that itself has folded light beam gets final product), thereby will be reflected to described optical sensor 56 with various angles from the folded light beam 42B that described smooth feed opening 54 enters described housing 52.
Use the projector 30 of this creation when each display unit 62A, 62B of described video wall 60,62C and 62D, can use each projector's 30 built-in light sensing module 50 to measure the output brightness of each display unit 62A, 62B, 62C and 62D, and not need the engineering staff to use external light sensor to measure.In addition, because the optical sensor 56 of each projector 30 may have different sensitivity because of difference each other, the optical sensor 56 of the projector 30 of a certain display unit may be in saturation condition, and the output signal of the optical sensor 56 of the projector 30 of another display unit then may be low excessively.Control the input light quantity that enters described housing 52 by described opening adjusting device 58, this creation provides a kind of method of individually adjusting the whole sensitivity of described smooth sensing module 50, and the photodetector 56 that can solve each display unit 62A, 62B, 62C and the 62D of existing-quality television wall 60 effectively has the problem of different sensitivity because of difference each other.
Furthermore, the sensitivity method of adjustment of this creation is to adjust the whole sensitivity of described smooth sensing module 50 by the effective dimensions of the light feed opening 54 that changes described smooth sensing module 50, and promptly the input light quantity that enters described housing 52 by change is adjusted the whole sensitivity of described smooth sensing module 50.Specific, if the optical sensor 56 of described smooth sensing module 50 is to be in saturation condition (it is too high promptly to import light quantity), then rotate described bolt 58 and cover the defeated opening 54 of described light and dwindle its effective dimensions, and then reduce the light quantity that enters described housing 52 with part.Otherwise if the output signal of the optical sensor 56 of described smooth sensing module 50 low excessively (it is too low promptly to import light quantity), rotating described bolt 59A so increases the light quantity that enters described housing 52 with the effective dimensions that increases the defeated opening 54 of described light.
The projector 30 of this creation utilizes built-in light sensing module 50 directly to measure the intensity of reflected light of described micro-mirror element 42, need not use external light sensor, and is therefore more convenient than routine techniques.In addition, the light sensing module 50 of this creation can change the effective dimensions of described smooth feed opening 54 by described opening adjusting device 58, and adjusts the whole sensitivity of described smooth sensing module 50.
The technology contents and the technical characterstic of this creation disclose as above, yet the those skilled in the art still may be based on the teaching of this creation and announcement and made all substitutions and modifications that do not deviate from this creation spirit.Therefore, the protection range of this creation should be not limited to the content that embodiment discloses, and should comprise the various substitutions and modifications that do not deviate from this creation, and is contained by appending claims.
Claims (9)
1. projector is characterized in that comprising:
One light-emitting device can produce light beam;
One micro-mirror element can be with described beam reflection to an imaging district and a non-imaging district; With
One smooth sensing module is arranged at described non-imaging district.
2. projector according to claim 1 is characterized in that described smooth sensing module comprises:
One housing has a smooth feed opening;
One optical sensor is arranged among the described housing; With
One opening adjusting device is in order to adjust the effective dimensions of described smooth feed opening.
3. projector according to claim 2 is characterized in that described opening adjusting device comprises a bolt, and it adjusts the effective dimensions of described smooth feed opening by rotation.
4. projector according to claim 2 is characterized in that the inner surface of described housing is coated with reflecting material.
5. projector according to claim 1 is characterized in that comprising an image-displaying member in addition, is arranged at described imaging district.
6. light sensing module is characterized in that comprising:
One housing has a smooth feed opening;
One optical sensor is arranged among the described housing; With
One opening adjusting device is in order to adjust the effective dimensions of described smooth feed opening.
7. smooth sensing module according to claim 6 is characterized in that described opening adjusting device comprises a bolt, and it adjusts the effective dimensions of described smooth feed opening by rotation.
8. smooth sensing module according to claim 6 is characterized in that described opening adjusting device comprises a projection, and it adjusts the effective dimensions of described smooth feed opening by slip.
9. smooth sensing module according to claim 6 is characterized in that the inner surface of described housing is coated with reflecting material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620002109 CN2901741Y (en) | 2006-01-25 | 2006-01-25 | Projector and its optical sensing module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620002109 CN2901741Y (en) | 2006-01-25 | 2006-01-25 | Projector and its optical sensing module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2901741Y true CN2901741Y (en) | 2007-05-16 |
Family
ID=38085904
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620002109 Expired - Lifetime CN2901741Y (en) | 2006-01-25 | 2006-01-25 | Projector and its optical sensing module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2901741Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101413788B (en) * | 2007-10-19 | 2010-11-24 | 财团法人工业技术研究院 | Method and apparatus for measuring surface appearance |
| CN101644386B (en) * | 2009-06-11 | 2012-06-27 | 江苏名家汇电器有限公司 | LED light fitting based on DMD micro-lens optical design |
| CN104677307A (en) * | 2013-12-02 | 2015-06-03 | 财团法人工业技术研究院 | Measuring method and device combining three-dimensional and two-dimensional shapes |
-
2006
- 2006-01-25 CN CN 200620002109 patent/CN2901741Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101413788B (en) * | 2007-10-19 | 2010-11-24 | 财团法人工业技术研究院 | Method and apparatus for measuring surface appearance |
| CN101644386B (en) * | 2009-06-11 | 2012-06-27 | 江苏名家汇电器有限公司 | LED light fitting based on DMD micro-lens optical design |
| CN104677307A (en) * | 2013-12-02 | 2015-06-03 | 财团法人工业技术研究院 | Measuring method and device combining three-dimensional and two-dimensional shapes |
| CN104677307B (en) * | 2013-12-02 | 2018-03-23 | 财团法人工业技术研究院 | Measuring method and device combining three-dimensional and two-dimensional shapes |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20070516 |
|
| EXPY | Termination of patent right or utility model |