CN2620297Y - Object surface regulator of optical projecting system based on focus out depth analysis - Google Patents
Object surface regulator of optical projecting system based on focus out depth analysis Download PDFInfo
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- CN2620297Y CN2620297Y CN 03228416 CN03228416U CN2620297Y CN 2620297 Y CN2620297 Y CN 2620297Y CN 03228416 CN03228416 CN 03228416 CN 03228416 U CN03228416 U CN 03228416U CN 2620297 Y CN2620297 Y CN 2620297Y
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- ccd
- projection screen
- frosted glass
- projection
- adjustment
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Abstract
The utility model discloses a matter surface adjustment device for an optical projection system that is based on the defocus depth analysis, sequentially comprising an illuminating light source, an illuminating and decompn system, red, blue, green LCDs and an adjustment structure, an optical synthesis and projection imaging system, and a projection screen that is provided with a plurality of CCDs. An image collection group of each CCD on the projection screen has the following structure: the projection screen is provided with frosted glass, the back of which is provided with a lens; the back of the lens is provided with a CCD device; the frosted glass and the CCD surface respectively grip the shared lens, which makes the image on the projection screen firstly diffused by the frosted glass, and then shrunk and imaged on the CCD surface by means of a convex lens; a frosted glass pressure coil, a front pressure coil of the projection screen, a back pressure coil of the projection screen and an adjusting connected coil are all used to fix the frosted glass, the lens and the CCD device; the rotation and adjustment of the connected coil make the frosted glass clearly imaged on the surface of the CCD device; a propping screw is used to fix each pressure coil and the connected coil. The utility model has advantages that: firstly, the adjustment has a high accuracy; secondly, the adjustment has a fast speed; thirdly, the operation is simple.
Description
Technical field
The utility model relates to a kind of optical projection system object plane adjusting gear based on defocus depth analysis.
Background technology
Along with every optical unit continuous advancement in technology, the optical projection technology is ripe just gradually, or is forming batch process.Most typical as multimedia digital projector, digital projection TV etc.The object plane of this class optical projection system is generally LCD or other target, film etc.Owing in optical element, the mechanical component manufacture process certain error is arranged all, and whole optical system is very sensitive to error, the alignment error of LCD or target, the foozle of projection lens all can make whole optical projection system projected image bad, as without adjustment, projected image can't allow the people watch at all.
With the digital projection TV is example (multimedia overhead projector instrument principle is basic identical), and optical projection system comprises that light source and beam split part, three LCD, three looks synthesize and the first-class parts composition of projection lens.Wherein three LCD show the red, green, blue color image respectively, synthesize, projected on the display screen by projection lens through light illumination, synthesis system.Three LCD are fixed by the anchor clamps of corresponding band adjusting mechanism respectively.Each piece LCD all may exist inclination, translation and rotation equal error, and that each color image that projection is gone out exists is unintelligible, reference position is to, image rotation etc., and the projected image of three LCD is synthesized together, and three kinds of color chromatographys dislocation also can occur.Therefore need carry out the adjustment of six-freedom degree to each piece LCD, need the adjustment of 18 degree of freedom altogether.
For above-mentioned 18 degree of freedom are adjusted, the general now following steps that adopt:
1), a LCD (monochrome) is carried out projection, observes the sharpness at projection screen epigraph center earlier, adjust the focusing position of this piece LCD;
2) observe the sharpness on image four limits, respectively, adjust the inclination of LCD;
3), the inclination situation of observing image level and perpendicular line, adjust the sense of rotation of LCD;
4), other two LCD are carried out same adjustment;
5), three LCD (redgreenblue) projection simultaneously, adjust the relative position of three LCD, make chromatography correct.
In the whole adjustment process, need debugging person that enough experiences are arranged, labour intensity is very big, adjust precision and depend on debugging person's subjectivity to a great extent, and it is very slow to regulate the speed.This adjustment method obviously can not adapt to the needs of large-scale production.
Summary of the invention
The purpose of this utility model provides a kind of optical projection system object plane adjusting gear based on defocus depth analysis.
Optical projection system object plane adjusting gear based on defocus depth analysis has lighting source successively, illumination and beam splitting system, red, blue, green LCD and adjustment structure, synthetic and the projection imaging system of optics, the projection screen of a plurality of CCD is housed, the structure of each group ccd image collection group is on the projection screen: frosted glass is installed in the projection screen position, a camera lens is installed thereafter, the rear of camera lens is equipped with the CCD device, frosted glass and CCD face are gripped altogether about camera lens respectively, make picture on the projection screen after the frosted glass diffusion, dwindle through lens and to image in the CCD surface, the frosted glass trim ring, trim ring before the projection screen, trim ring and adjustment adapter ring are used for fixing frosted glass behind the projection screen, camera lens and CCD device, adapter ring rotates to be adjusted, make frosted glass very clearly image in the CCD device surface, press closer screw and be used for fixing each trim ring and adapter ring.
Advantage of the present utility model:
1), adjust accuracy height (comprising that focusing, chromatography, accent tilt, transfer rotation etc.), be not subjected to the influence of operating personnel's subjective factor, precision all has control system to guarantee;
2), regulate the speed soon, the adjustment amount of 18 degree of freedom is all disposable to be provided, and is fit to the large-scale production needs;
3), simple to operate, the operator does not need a lot of experiences.
Description of drawings
Fig. 1 is based on the optical projection system object plane adjusting gear structural representation of defocus depth analysis, among the figure: lighting source 1, illumination and beam splitting system 2, red LCD and adjusting mechanism 3, blue LCD and adjusting mechanism 4, optics synthetic with projection imaging system 5, green LCD and adjusting mechanism 6, the projection screen 7 of a plurality of CCD is housed;
Fig. 2 is based in the optical projection system object plane adjusting gear of defocus depth analysis the projection screen CCD installation site distribution plan of enameling;
Fig. 3 is based in the optical projection system object plane adjusting gear of defocus depth analysis ccd image collection group structural representation on the projection screen;
Fig. 4 is based in the optical projection system object plane adjusting gear of defocus depth analysis debugging with a unit of standard picture, and A is the unit of debugging with standard picture among the figure, and B is the red component pattern, and C is the green component pattern, and D is the blue component pattern.
Embodiment
Optical projection system object plane method of adjustment based on defocus depth analysis is: a plurality of ccd image acquisition components are installed to obtain image on the projection screen of projection optical system, by analysis to image, obtain the relative position deviation of defocusing amount, horizontal direction tilt quantity, vertical direction tilt quantity, rotation amount and three LCD of optical projection system object plane LCD, provide the adjustment parameter.
Said ccd image acquisition component is: frosted glass is installed in the projection screen position, an imaging lens is installed thereafter, and the rear of camera lens is equipped with the CCD device, and frosted glass and CCD face are gripped altogether about camera lens respectively, make picture on the projection screen after the frosted glass diffusion, dwindle imaging in the CCD surface through lens.
The defocusing amount that obtains optical projection system object plane LCD by the analysis to image is with the out of focus depth method multiple image to be calculated, and draws the defocusing amount of image, thereby obtains the defocusing amount of object plane LCD.Each divides the disc of confusion size of chromatic graph to calculate each width of cloth image respectively with the out of focus depth method, again in conjunction with the optical parametric of projection optical system, calculates the defocusing amount of each color separated image, thereby calculates the axial bias of a corresponding LCD correspondence position.By calculating, can determine the three degree of freedom of each LCD: along optical axis direction defocusing amount, axial two amount of deflections of vertical light to each color separated image.
So-called out of focus depth method, can be summarized as follows: the used standard picture of this patent is the colored lines of many pure colors, the image that CCD obtains when correct of focusing can be thought step function on mathematics, system's output obtains the straight flange response, and the derivative of straight flange response is exactly the line spread function of system.Utilize this relation, can respond the size that estimates disc of confusion by the imaging system straight flange.
According to the simple relation of geometrical optics, can obtain picture side's defocusing amount of image easily by disc of confusion R, further obtain the defocusing amount of object plane.
By the horizontal direction tilt quantity that the analysis of image is obtained optical projection system object plane LCD be: by analytical calculation to two width of cloth images that obtain by CCD2 and CCD3 of dislocation, obtain the defocusing amount that corresponding projection object plane LCD goes up two points of horizontal direction, thereby obtain the tilt quantity of LCD horizontal direction;
By the vertical direction tilt quantity that the analysis of image is obtained optical projection system object plane LCD be: by analytical calculation to two width of cloth images that obtain by CCD4 and CCD5 of vertical direction dislocation, obtain the defocusing amount that corresponding projection object plane LCD goes up two points of vertical direction, thereby obtain the tilt quantity of LCD vertical direction;
Rotation amount by the analysis of image being obtained optical projection system object plane LCD and the relative position deviation of three LCD are to utilize a cover to adjust the standard multicolour pattern of usefulness, the position relation on each color separated image by white on the theory of computation or colored lines, calculate the relative position deviation of three LCD, should be level, vertical levelness, the verticality of lines in image on the theory of computation, calculate the amount of swaying and three relative initial position departures of LCD of three LCD.
Adjustment System of the present utility model comprises debugging standard picture, multichannel ccd image acquisition component, computer control system and process software composition.
At first produce one group of debugging and use standard picture, comprise color separated image, become one group of colored debugging image after synthesizing by three LCD outputs of RGB by computer control software.
This colour debugging image obtains the colored debugging of width of cloth image through the optical projection system projection of dress just on projection screen.May there be various defect errors in this image, comprising: focus unclear, image inclination or rotation, three looks not overlapping or the like.
Optical projection system object plane adjusting gear based on defocus depth analysis has lighting source, illumination and beam splitting system, red, blue, green LCD and adjustment structure, synthetic and the projection imaging system of optics, the projection screen of a plurality of CCD is housed, the structure of each group ccd image collection group is on the projection screen: frosted glass 14 is installed in projection screen 9 positions, a camera lens 11 is installed thereafter, the rear of camera lens is equipped with CCD device 12, frosted glass 14 and CCD face are gripped altogether about camera lens respectively, make picture on the projection screen after the frosted glass diffusion, dwindle through lens and to image in the CCD surface, frosted glass trim ring 8, trim ring 13 before the projection screen, trim ring 15 and adjustment adapter ring 17 are used for fixing frosted glass behind the projection screen, camera lens and CCD device, adapter ring rotates to be adjusted, make frosted glass very clearly image in the CCD device surface, press closer screw 16 and be used for fixing each trim ring and adapter ring.
Therefore, by the analysis to disc of confusion, svelteness degree and the relative position of several coloured image each minute chromatic graphs, can calculate the error of each direction of three LCD, 18 degree of freedom are all determined.According to the adjustment scheme that computer software provides, the operator can adjust all directions of LCD easily, and the very fast adjustment of total system is finished.Adjusting to observe does not need the too many experience in early stage of operator, adjusts precision and is guaranteed by system, not influenced by operator's subjective factor.
Fig. 1 is the chief component of optical projection system: light source, three LCD, the optics that divide lighting system, band to adjust structure synthesize and projection imaging system, projection display screen.
Fig. 2 is the projection screen CCD installation site distribution plan of enameling.As exemplary, lay five CCD on the projection screen, be installed on (CCD3), top middle (CCD4) and following middle (CCD5) in the middle of center (CCD1), the left side middle (CCD2), the right respectively.
Fig. 3 is the structure of each group ccd image collection group.Frosted glass 14 is installed in projection screen 9 positions, and a camera lens 11 is installed thereafter, and the rear of camera lens is equipped with CCD device 12, and frosted glass 14 and CCD face are gripped altogether about camera lens respectively, makes picture on the projection screen after the frosted glass diffusion, dwindles imaging in the CCD surface through lens.Trim ring 15 and adjustment adapter ring 17 are used for fixing frosted glass, camera lens and CCD device behind frosted glass trim ring 8, the preceding trim ring 13 of projection screen, the projection screen, and adapter ring can rotate adjustment, so that make frosted glass very clearly image in the CCD device surface.Pressing closer screw 16 is used for fixing.
Fig. 4 for a kind of debugging of form with a unit of standard picture (complete pattern is the Multiple Cycle of accompanying drawing 4, and each the piece CCD that installs on the assurance projection screen all can collect complete one more than the unit).Fig. 4 R is the red component pattern of standard picture, and Fig. 4 G is the green component pattern, and Fig. 4 B is the blue component pattern.Among the figure:
Expression is red,
Expression is green,
Expression is blue,
Expression yellow (the red green that adds),
Expression cyan (the green blueness that adds),
Expression magenta (the red blueness that adds),
Expression white (red add the green blueness that adds), " blank " expression black.Debugging can be a various ways with pattern, and this figure only is a kind of canonical form.
Claims (1)
1. optical projection system object plane adjusting gear based on defocus depth analysis, it is characterized in that: it has lighting source according to this, illumination and beam splitting system, red, blue, green LCD and adjustment structure, synthetic and the projection imaging system of optics, the projection screen of a plurality of CCD is housed, the structure of each group ccd image collection group is on the projection screen: frosted glass (14) is installed in projection screen (9) position, a camera lens (11) is installed thereafter, the rear of camera lens is equipped with CCD device (12), frosted glass (14) and CCD face are gripped altogether about camera lens respectively, make picture on the projection screen after the frosted glass diffusion, dwindle through lens and to image in the CCD surface, frosted glass trim ring (8), trim ring (13) before the projection screen, trim ring behind the projection screen (15) and adjustment adapter ring (17) are used for fixing frosted glass, camera lens and CCD device, adapter ring rotates to be adjusted, make frosted glass very clearly image in the CCD device surface, press closer screw (16) and be used for fixing each trim ring and adapter ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03228416 CN2620297Y (en) | 2003-01-23 | 2003-01-23 | Object surface regulator of optical projecting system based on focus out depth analysis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03228416 CN2620297Y (en) | 2003-01-23 | 2003-01-23 | Object surface regulator of optical projecting system based on focus out depth analysis |
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| CN2620297Y true CN2620297Y (en) | 2004-06-09 |
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| CN 03228416 Expired - Fee Related CN2620297Y (en) | 2003-01-23 | 2003-01-23 | Object surface regulator of optical projecting system based on focus out depth analysis |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100372368C (en) * | 2004-12-06 | 2008-02-27 | 索尼株式会社 | Image device, control method for the imaging device, program for performing the control method, and recording medium recording the program |
| CN109917559A (en) * | 2017-12-13 | 2019-06-21 | 长光华大基因测序设备（长春）有限公司 | High-precision optical lens eccentricity adjusts structure and method |
| CN110824722A (en) * | 2018-08-07 | 2020-02-21 | 宁波舜宇光电信息有限公司 | Structured light projection module assembly device and projection module assembly and detection method |
| CN114721209A (en) * | 2022-04-27 | 2022-07-08 | 业成科技（成都）有限公司 | Projection display device |
-
2003
- 2003-01-23 CN CN 03228416 patent/CN2620297Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100372368C (en) * | 2004-12-06 | 2008-02-27 | 索尼株式会社 | Image device, control method for the imaging device, program for performing the control method, and recording medium recording the program |
| CN109917559A (en) * | 2017-12-13 | 2019-06-21 | 长光华大基因测序设备（长春）有限公司 | High-precision optical lens eccentricity adjusts structure and method |
| CN110824722A (en) * | 2018-08-07 | 2020-02-21 | 宁波舜宇光电信息有限公司 | Structured light projection module assembly device and projection module assembly and detection method |
| CN110824722B (en) * | 2018-08-07 | 2021-10-15 | 宁波舜宇光电信息有限公司 | Structured light projection module assembly device and projection module assembly and detection method |
| CN114721209A (en) * | 2022-04-27 | 2022-07-08 | 业成科技（成都）有限公司 | Projection display device |
| CN114721209B (en) * | 2022-04-27 | 2023-06-27 | 业成科技（成都）有限公司 | Projection display device |
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| GR01 | Patent grant | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |