CN104391344B - A kind of microlens array method for designing for eliminating main lobe distortion aberration - Google Patents
A kind of microlens array method for designing for eliminating main lobe distortion aberration Download PDFInfo
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- CN104391344B CN104391344B CN201410547251.1A CN201410547251A CN104391344B CN 104391344 B CN104391344 B CN 104391344B CN 201410547251 A CN201410547251 A CN 201410547251A CN 104391344 B CN104391344 B CN 104391344B
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B3/00—Simple or compound lenses
- G02B3/0006—Arrays
- G02B3/0012—Arrays characterised by the manufacturing method
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/0025—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for optical correction, e.g. distorsion, aberration
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
- G02B30/20—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes
- G02B30/26—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type
- G02B30/27—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type involving lenticular arrays
Abstract
The invention discloses a kind of microlens array method for designing for eliminating main lobe distortion aberration, mainly utilizing LCDs, free curved surface micro-lens array, substrate, CCD camera and computing machine.By dynamic feedback Optimization Design, collimation rectangular shaped light source image source sent, through free curved surface micro-lens array, gathers intensity signal by the CCD camera being set in best observed range D place.Oppositely curved surface optimization is carried out to free curved surface micro-lens array by calculating aberration rate S.Survey aberration rate S according to CCD, adjustment quadric surface coefficient k, repeats above-mentioned steps, until find a suitable quadric surface coefficient k, make aberration rate S close to zero time, the microlens array of the main lobe that can be eliminated distortion aberration.The method is simply effective, adopts the method for dynamic feedback, can effectively eliminate distortion aberration, improve the image quality in integration imaging in microlens array design.
Description
Technical field
The present invention relates to 3-D display field, particularly a kind of free curved surface micro-lens array system and method for eliminating main lobe distortion aberration.
Background technology
In recent years, three-dimensional imaging and display technique receive increasing concern.Owing to having complete parallax, continuous print viewpoint and without the need to any observation glasses and special illumination based on the integration imaging technology of microlens array, therefore this technology is shown one's talent in three-dimensional imaging and display technique field, develops into the automatic stereo display technique of most potentiality and prospect gradually.
Microlens array (Microlensarray) is exactly wherein a kind of important micro optical element, microlens array is the array that micron-sized lens form by clear aperature and relief depth, it not only has the basic function such as focusing, imaging of conventional lenses, and have the advantages that unit size is little, integrated level is high, the function making it can complete traditional optical elements cannot to complete, and many novel optical systems can be formed, form multiple New function, comprise microprism array, micro-reflective array, array of photoswitch etc.
Lenticular number in microlens array decides the resolution of integration imaging to a certain extent, so the optical property of microlens array determines integration imaging quality.Integration imaging based on microlens array has multiple advantage, as can provide complete parallax (comprising vertical parallax and horizontal parallax), quasi-continuous viewpoint, full color and realtime graphic, without any need for specific installation and multiple observer can see integrated 3D rendering etc.But still there is the problem such as limited viewing angle, depth of field finite sum lack of resolution in integration imaging.
In order to solve the problem, have employed a lot of method in the world, as methods such as restriction visual field, light isolation and attaching scattering films.But said method is all the change carried out beyond microlens array based on fixing microlens array.The main cause of such operation is that the microlens array production cycle is long, cost of manufacture is large and optical parametric that is microlens array is not very clear with associating between integration imaging quality.
Summary of the invention
The technical matters solved: for the deficiencies in the prior art, the present invention proposes a kind of microlens array method for designing for eliminating main lobe distortion aberration, eliminates main lobe pincushion distortion by changing microlens array itself and then solves the undesirable technical matters of the image quality that exists in existing microlens array integration imaging technology.
Technical scheme: for solving the problems of the technologies described above, the present invention by the following technical solutions:
For eliminating a microlens array method for designing for main lobe distortion aberration, this method comprises LCDs, substrate, free curved surface micro-lens array, CCD camera and computing machine;
With the image source sending collimation rectangular light in described LCDs;
Lenticule one side surface in described free curved surface micro-lens array is plane opposite side surface is circular shape;
Described substrate between LCDs and the plane side of free curved surface micro-lens array and substrates into intimate laminating free curved surface micro-lens array, described image source is positioned on the back focal plane of free curved surface micro-lens array; Described CCD camera aims at the position of the best observed range D being arranged on distance free curved surface micro-lens array front, and CCD camera is connected to computing machine; The circular of described back focal plane according to the designing requirement of best observed range D and magnification m, by formula f=D/ (2m-1), can calculate the focal distance f of lens, then namely back focal plane is positioned at the focal position place of lenticular plane side.
First described CCD camera gathers the image information that image source sends, and the image information collected is sent to computing machine, according to aberration rate formula
calculate current aberration rate S, in aberration rate formula, y
p' represent the actual image height of image that CCD camera collects, y
0' representing the desirable image height of the image that CCD camera should collect in undistorted situation, δ y' represents line distortion;
Then the lenticular quadric surface coefficient k in free curved surface micro-lens array is adjusted according to the current aberration rate S calculated, the aberration rate S again calculated after adjusting is diminished, examination value repeatedly, until aberration rate S=0, the free curved surface micro-lens array corresponding to quadric surface coefficient k is now the microlens array eliminating main lobe distortion aberration.
Because lenticule curved surface is flat round-shaped, so just meet toroidal function
relation, in toroidal function, c is curvature, and r is the radial coordinate in units of lenticule long measure; Illustrate, the quadric surface coefficient k little Yu – 1 that hyperboloid is corresponding, quadric surface coefficient k Wei corresponding to parabola is between – 1, the quadric surface coefficient k – 1 to 0 that elliptical area is corresponding, and the quadric surface coefficient k that sphere is corresponding is 0; Quadric surface coefficient k each time after the adjustment toroidal function that just correspondence one is new, the i.e. concrete shape of the lenticule curved surface that correspondence one is new, this is by the degree of direct effect diagram image distortion, the shape of the lenticule curved surface used when aberration rate S is 0 is the curved surface finally can eliminating main lobe distortion aberration, and the microlens array of such lenticule composition is required design result.
The method for designing that the present invention utilizes dynamic feedback to optimize, the aberration rate S that current microlens array causes is obtained in image information CCD camera collected, according to aberration rate S thus the lenticular quadric surface coefficient k changed in lenticule permutation, continuous adjustment, until the aberration rate S finally obtained is 0, just eliminate distortion aberration thus, improve image quality.
Further, in the present invention, the size of image source is consistent with single lenticule, and with one of them lenticule close alignment; Free curved surface micro-lens array is fitted in LCDs by substrates into intimate; The described CCD camera lenticule corresponding with this image source and image source is positioned on straight line.Keep image source and single lenticule is in the same size, aligned in position, the light of image source is injected by lenticular plane side and penetrates from free form surface side, CCD camera point-blank can be made to gather image more accurate, avoid having other image sources to produce interference around.
Further, in the present invention, described substrate and microlens array all adopt the transparent material that refractive index is consistent.Good light transmission is the condition that must meet in microlens array design, and this material is relatively more extensive, as quartz glass, PET film, acrylic board etc.
Beneficial effect:
The present invention utilizes dynamic feedback, propose the acquisition methods of a kind of microlens array for eliminating main lobe pincushion distortion in integration imaging and the structural parameters after optimizing thereof, CCD camera is utilized to put appropriate position, simulation human eye collects the image at viewing location place, and then contrast with the image in ideal situation, obtain aberration rate S, lenticular surface configuration is changed as with reference to reverse, aberration rate S is progressively made to reduce until be tending towards the pincushion aberration that 0 microlens array under these structural parameters can eliminate imaging surface side main lobe in integration imaging effectively, improve 3D display quality.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is pixel schematic diagram;
Fig. 3 is tilted microlens array schematic diagram;
Fig. 4 is the main lobe shape before optimizing;
Fig. 5 is the main lobe shape after optimizing.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further described.
Embodiment 1.
As Fig. 1 comprises LCDs 1, substrate 2, free curved surface micro-lens array 3, CCD camera and computing machine 4;
As shown in Figure 3, be made up of multiple identical lenticule in free curved surface micro-lens array 3, each lenticular side surface is plane opposite side surface is circular shape, each lenticular size is as follows, long 0.2865mm, wide 0.2056mm, curvature c are 0.6, and are made up of transparent acrylic material; With the image source sending collimation rectangular light in described LCDs 1, and this image source is also identical with single lenticule with one of them lenticule close alignment, size, the present invention adjusts lenticular curve form by observing the change of shape of this collimated light source after free curved surface micro-lens array to carry out thus realizes goal of the invention; As shown in Figure 2, the each pixel of each subgraph in this image source namely in true 3-D display arranges a sub-pixel by 5 row 16 and forms, each sub-pixel is R, G, B respectively, Fig. 2 grey area represents single lenticule size, during as image source, only light all sub-pixels in this region, other pixels are not lighted; Described free curved surface micro-lens array 3 is vertically placed relative to optical axis, and parallel with image source, and each lenticule is projected as rectangle in image source.
Described substrate 2 is between LCDs 1 and the plane side of free curved surface micro-lens array 3 and substrate 2 fits tightly free curved surface micro-lens array 3 and LCDs 1, the material of substrate 2 is identical with lenticule, and according to the designing requirement of viewing ratio D and magnification m, by formula f=D/ (2m-1), calculate lenticular focal distance f=0.19m, here viewing ratio D is the known design objective of of free curved surface micro-lens array 3, is generally according to the anti-structural parameters releasing free curved surface micro-lens array 3 of this design objective.Focal distance f be just from the principal point of free curved surface micro-lens array 3 to lenticular focus distance, this segment distance forms by 3 sections, the thickness of principal point to lenticule rear surface of free curved surface micro-lens array 3, the thickness of substrate 2 and the thickness of LCDs 1 respectively, so select the thickness of substrate 2 that described image source just can be made to be positioned on the back focal plane of free curved surface micro-lens array 3; Described CCD camera aims at the position of the best observed range D being arranged on distance free curved surface micro-lens array 3 front, and the described CCD camera lenticule corresponding with this image source and image source is positioned on straight line, CCD camera is connected to computing machine 4.
First described CCD camera gathers the image information that image source sends, and the image information collected is sent to computing machine 4, according to aberration rate formula
calculate current aberration rate S, in aberration rate formula, y
p' represent the actual image height of image that CCD camera collects, y
0' representing the desirable image height of the image that CCD camera should collect in undistorted situation, δ y' represents line distortion;
Then the lenticular quadric surface coefficient k in free curved surface micro-lens array 3 is adjusted according to the current aberration rate S calculated, the aberration rate S again calculated after adjusting is diminished, examination value repeatedly, until aberration rate S is tending towards 0, quadric surface coefficient k is now between-1.5 to-1.7, and now corresponding free curved surface micro-lens array 3 is the microlens array eliminating main lobe distortion aberration.As shown in Figure 4 and Figure 5, be respectively the main lobe shape before and after optimizing, utilize the inventive method effectively can improve main lobe distortion as seen.
Embodiment 2.
In bore hole 3D, in order to eliminate Moire fringe, effective method is turning axle relative to image source with optical axis by free curved surface micro-lens array 3, and turn clockwise 14.1411 ° of slant settings (as Fig. 3).In this case, image source subgraph needs to reconfigure according to angle of inclination, image source subgraph is as a pixel of whole true 3-D display, when the substrate 2 just right by it and lenticule, the aberrations such as distortion can be produced, image and the image source image of final body present town 3-D display are inconsistent, reduce the stereoscopic experience effect of spectators.
So, same employing method of the present invention, adopts the hardware same with embodiment 1, only the putting position of free curved surface micro-lens array 3 is carried out slant setting according to mentioned above, the position relationship between other hardware.
Under these circumstances, adopt method similarly to Example 1 to adjust, finally can, when quadratic coefficients k is between-1.5 to-1.7, aberration rate S can be made to be tending towards 0 equally, the microlens array eliminating main lobe distortion aberration can be obtained.
The above is only the preferred embodiment of the present invention; be noted that for those skilled in the art; under the premise without departing from the principles of the invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (3)
1., for eliminating a microlens array method for designing for main lobe distortion aberration, it is characterized in that: this method comprises LCDs (1), substrate (2), free curved surface micro-lens array (3), CCD camera and computing machine (4);
With the image source sending collimation rectangular light in described LCDs (1);
Lenticule one side surface in described free curved surface micro-lens array (3) is plane opposite side surface is circular shape;
Between the plane side that described substrate (2) is positioned at LCDs (1) and free curved surface micro-lens array (3) and substrate (2) fits tightly free curved surface micro-lens array (3), described image source is positioned on the back focal plane of free curved surface micro-lens array (3); Described CCD camera aims at the position of the best observed range D being arranged on distance free curved surface micro-lens array (3) front, and CCD camera is connected to computing machine (4);
First described CCD camera gathers the image information that image source sends, and the image information collected is sent to computing machine (4), according to aberration rate formula
calculate current aberration rate S, in aberration rate formula, y '
prepresent the actual image height of the image that CCD camera collects, y '
0represent the desirable image height of the image that CCD camera should collect in undistorted situation, δ y' represents line distortion;
Then the lenticular quadric surface coefficient k in free curved surface micro-lens array (3) is adjusted according to the current aberration rate S calculated, the aberration rate S again calculated after adjusting is diminished, examination value repeatedly, until aberration rate S=0, the free curved surface micro-lens array (3) corresponding to quadric surface coefficient k is now the microlens array eliminating main lobe distortion aberration.
2. according to claim 1ly a kind ofly to distort the microlens array method for designing of this aberration for eliminating main lobe, it is characterized in that: the size of image source is consistent with single lenticule, and with one of them lenticule close alignment; Free curved surface micro-lens array (3) fits tightly in LCDs (1) by substrate (2); The described CCD camera lenticule corresponding with this image source and image source is positioned on straight line.
3. according to claim 1ly a kind ofly to distort the microlens array method for designing of this aberration for eliminating main lobe, it is characterized in that: described substrate (2) all adopts the transparent material that refractive index is consistent with free curved surface micro-lens array (3).
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| CN105611279B (en) * | 2015-12-23 | 2017-12-15 | 四川大学 | The removing method of augmented reality integration imaging 3D display pattern distortion |
| CN106094200B (en) * | 2016-08-24 | 2018-09-14 | 宁波视睿迪光电有限公司 | A kind of dot structure, display panel and display device |
| CN110133767B (en) * | 2019-05-09 | 2020-10-13 | 中国科学院光电技术研究所 | Optimization method of dynamic display anti-counterfeiting technology micro-lens array |
| CN110445973B (en) * | 2019-08-29 | 2021-02-26 | Oppo广东移动通信有限公司 | Arrangement method of micro lens array, image sensor, imaging system and electronic device |
| CN112435637B (en) * | 2020-11-30 | 2022-03-18 | Oppo广东移动通信有限公司 | Brightness compensation method, brightness compensation equipment and brightness compensation system of curved screen |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1896771A (en) * | 2005-07-12 | 2007-01-17 | 宫川株式会社 | Method of letting a sufficient quantity of light pass through each of apertures for entry of backlight |
| CN1979284A (en) * | 2005-12-02 | 2007-06-13 | 鸿富锦精密工业（深圳）有限公司 | Liquid-crystal display |
| CN101517464A (en) * | 2006-09-28 | 2009-08-26 | 夏普株式会社 | Liquid crystal display panel with microlens array, its manufacturing method, and liquid crystal display device |
| CN101656835A (en) * | 2008-08-21 | 2010-02-24 | 索尼株式会社 | Image pickup apparatus, display and image processing apparatus |
| CN101833170A (en) * | 2009-03-11 | 2010-09-15 | 索尼公司 | Stereoscopic display device |
-
2014
- 2014-10-15 CN CN201410547251.1A patent/CN104391344B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1896771A (en) * | 2005-07-12 | 2007-01-17 | 宫川株式会社 | Method of letting a sufficient quantity of light pass through each of apertures for entry of backlight |
| CN1979284A (en) * | 2005-12-02 | 2007-06-13 | 鸿富锦精密工业（深圳）有限公司 | Liquid-crystal display |
| CN101517464A (en) * | 2006-09-28 | 2009-08-26 | 夏普株式会社 | Liquid crystal display panel with microlens array, its manufacturing method, and liquid crystal display device |
| CN101656835A (en) * | 2008-08-21 | 2010-02-24 | 索尼株式会社 | Image pickup apparatus, display and image processing apparatus |
| CN101833170A (en) * | 2009-03-11 | 2010-09-15 | 索尼公司 | Stereoscopic display device |
Non-Patent Citations (1)
| Title |
|---|
| 一种3D亚像素液体透镜的设计与研究;杨鑫、夏军、谢意、康明武、张求知;《光电子技术》;20140630;第34卷(第2期);第117页-120页 * |
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