CN104614793A - Optical grating and three-dimensional display device - Google Patents
Optical grating and three-dimensional display device Download PDFInfo
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- CN104614793A CN104614793A CN201410850564.4A CN201410850564A CN104614793A CN 104614793 A CN104614793 A CN 104614793A CN 201410850564 A CN201410850564 A CN 201410850564A CN 104614793 A CN104614793 A CN 104614793A
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- grating
- pitch
- micro optical
- optical structure
- display device
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Classifications
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/18—Diffraction gratings
- G02B5/1842—Gratings for image generation
-
- 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 an optical grating and a three-dimensional display device. The optical grating is used for spreading light in different directions through a light splitting effect o realize three-dimensional display; the optical grating comprises a plurality of micro optical structures which are arranged in the form of an array, wherein the grating distances of part of the micro optical structures are different. The three-dimensional display device comprises a display panel and the optical grating; the display panel comprises a plurality of display units which are arranged in the form of the array; the optical grating and the display panel are stacked; an included angle is formed between the inclined direction of the micro optical structures and the diagonal line direction of the display units. The optical grating can be used for effectively eliminating moire patterns and improving the universality and the maintainability of apparatuses in the three-dimensional display device.
Description
Technical field
The present invention relates to field of stereoscopic display, particularly relate to grating and 3 d display device.
Background technology
Current, bore hole stereoscopic display device, owing to need not wear special 3D glasses, more and more receives the concern of people.Existing naked eye three-dimensional three-dimensional display is mainly developed based on binocular parallax, mainly grating type three-dimensional display.Grating type three-dimensional display is the three-dimensional stereo display technique based on binocular parallax principle.Described binocular parallax, refers to there is certain interpupillary distance between people two, watch object time left eye and right eye received by visual pattern slightly difference, brain by containing nuance left-and right-eye images merge, produce have living space feel stereo landscape.
As shown in Figure 1, be that existing grating type three-dimensional display comprises flat-panel screens 1 and grating 2, the image that flat-panel screens produces enters the eyes 3 of beholder after grating.As shown in Figure 2, be the moire fringes schematic diagram of existing grating type three-dimensional display.Periodically interfere owing to existing between grating 2 and the pel array 11 of flat-panel screens, moire fringes 4 can be formed in the image that the image that the pel array 11 of flat-panel screens produces is shown after grating 2, obviously, the effect of this moire fringes 4 phenomenon to 3 D stereo picture has a great impact, the sight of image can be destroyed, have a strong impact on visual effect, cause the inadaptable sense of beholder.
In addition, for the flat-panel screens of different model, different display size, different with the requirement at pitch angle to the pitch of grating, direction.This obviously increases design cost and the manufacturing cost of three-dimensional display, be also unfavorable for versatility and the maintainability of the internal components of three-dimensional display.
Summary of the invention
The technical matters that the present invention mainly solves is to provide a kind of grating and 3 d display device, effectively can eliminate moire fringes.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is: provide a kind of grating, for by point light action light being propagated to different directions thus realizing stereo display, described grating comprises the micro optical structure that multiple array is arranged, and the pitch of at least part of described micro optical structure is different.
Wherein, the pitch of a part of described micro optical structure is different, and the gradual change successively of this pitch; Described in another part, the pitch of micro optical structure is identical.
Wherein, the pitch of a part of described micro optical structure is different, and the random change of this pitch; Described in another part, the pitch of micro optical structure is identical.
Wherein, the pitch of all described micro optical structures is all different, and the gradual change successively of this pitch.
Wherein, the pitch of all described micro optical structures is all different, and the random change of this pitch.
For solving the problems of the technologies described above, another technical solution used in the present invention is: provide a kind of 3 d display device, and it comprises display panel and above-mentioned grating; Described display panel comprises multiple display unit arranged in array; Described grating and described display panel stack, and there is angle between the vergence direction of described micro optical structure and the diagonal of described display unit.
Wherein, described grating is arranged between described display panel and beholder.
Wherein, described grating is arranged between described backlight module and described display panel.
Wherein, the intersection point defining the vergence direction of described micro optical structure and the diagonal of described display unit is initial point, clockwise direction is positive dirction, and the angular range of the angle between the vergence direction of described micro optical structure and the diagonal of described display unit is between 10 degree to negative 5 degree.
Wherein, the angular range of the angle between the vergence direction of described micro optical structure and the diagonal of described display unit is between 7 degree to negative 2 degree.
The invention has the beneficial effects as follows: the situation being different from prior art, grating provided by the invention and 3 d display device can eliminate the impact of moire fringes on display frame effectively, improve the image quality of stereo display.Further, split equably because grating of the present invention can adopt to compare display unit, not only eliminate moire fringes but also fine and smooth stereoscopic picture plane display effect can be obtained, and the setting range at the angle of inclination of grating setting is larger, the various dot structures that can meet two-d display panel in the market, for the requirement suppressing moire fringes, thus improve versatility and the maintainability of 3 d display device internal components.
Accompanying drawing explanation
Fig. 1 is the use schematic diagram of existing grating type three-dimensional display;
Fig. 2 is the moire fringes schematic diagram of existing grating type three-dimensional display;
Fig. 3 is the pattern schematic diagram of the first embodiment of grating of the present invention;
Fig. 4 is the pattern schematic diagram of the second embodiment of grating of the present invention;
Fig. 5 is the pattern schematic diagram of the 3rd embodiment of grating of the present invention;
Fig. 6 is the pattern schematic diagram of the 4th embodiment of grating of the present invention
Fig. 7 is the pitch of the micro optical structure of the 3rd embodiment is periodically variable pattern schematic diagram;
Fig. 8 is the structural representation of the grating set-up mode of the first embodiment of 3 d display device of the present invention;
Fig. 9 is the structural representation of the second embodiment of 3 d display device of the present invention;
Figure 10 is the structural representation of the 3rd embodiment of 3 d display device of the present invention;
Figure 11 is the structural representation of the 4th embodiment of 3 d display device of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
Refer to Fig. 3 to Fig. 7, Fig. 3 is the pattern schematic diagram of the first embodiment of grating of the present invention.Fig. 4 is the pattern schematic diagram of the second embodiment of grating of the present invention.Fig. 5 is the pattern schematic diagram of the 3rd embodiment of grating of the present invention.Fig. 6 is the pattern schematic diagram of the 4th embodiment of grating of the present invention.Fig. 7 is the pitch of the micro optical structure of the 3rd embodiment is periodically variable pattern schematic diagram.
A kind of grating, for be propagated to different directions by light by point light action thus realize stereo display, this grating comprises the micro optical structure that multiple array is arranged, and the pitch of at least part of micro optical structure is different.
Particularly, the pitch difference of at least part of micro optical structure can show as: the pitch of a part of micro optical structure is different, and the gradual change successively of this pitch; The pitch of another part micro optical structure is identical.For example, the micro optical structure of pitch gradual change is successively disposed adjacent composition gradual change group, and the micro optical structure that this gradual change group is identical with pitch is separately positioned on the diverse location of grating.Or this gradual change group is interted and is arranged between the identical micro optical structure of pitch, and the distance between two gradual change groups can be unequal, as shown in Figure 3.Certainly, the distance between two gradual change groups also can be equal.
The pitch difference of at least part of micro optical structure also can show as: the pitch of a part of micro optical structure is different, and the random change of this pitch; The pitch of another part micro optical structure is identical.Same, the micro optical structure that the micro optical structure of the random change of pitch is identical with pitch can be separately positioned on the diverse location of grating.Or the micro optical structure of the random change of this pitch also can intert and is arranged between the identical micro optical structure of pitch, as shown in Figure 4.
The pitch difference of at least part of micro optical structure can show as again: the pitch of all micro optical structures is all different, and the gradual change successively of this pitch, as shown in Figure 5, this pitch can increase gradually; Understandably, this pitch also can reduce gradually.
The pitch difference of at least part of micro optical structure can also show as: the pitch of all micro optical structures is all different, and the random change of this pitch, as shown in Figure 6.
In addition, the pitch of this micro optical structure can also be cyclical variation, and such as, the gradual change group of the micro optical structure composition of gradual change successively, in periodically arranging, defines in periodically variable micro optical structure, as shown in Figure 7.
Grating of the present invention by least part of pitch is set to difference, thus weakens the impact of moire fringes on picture, improves image quality.
Grating of the present invention can be cylindrical lens raster or slit grating, or can also be that other plays the device with similar optical property of lens or parallax obstructive action.Lenticular screen utilizes cylindrical lens array to interception of rays, images of left and right eyes anaglyph is supplied to respectively the images of left and right eyes of beholder, produces the stereo-picture with depth feelings after brain merges.The principle of slit grating is that beholder's images of left and right eyes can only see corresponding images of left and right eyes anaglyph through the light transmission part of grating, produces stereoscopic vision thus.
In addition, this grating can be fixed grating, also can be tunable gratings, such as, when this grating is cylindrical lens raster, the parameter such as inclination angle, pitch, thickness to cylindrical lens raster can be regulated by piezoelectric effect or mechanical system.When this grating is slit grating, can regulate with the transmittance of electrooptical effect to slit grating, change inclination angle and the spacing of obstacle and slit.
Referring to Fig. 8, is the structural representation of the grating set-up mode of the first embodiment of 3 d display device of the present invention.
A kind of 3 d display device, comprises display panel 110 and grating.Display panel 110 and grating stack.
This grating can be the arbitrary grating in first, second, third, fourth embodiment of above-mentioned grating, grating in the present embodiment is the grating in the 3rd embodiment of above-mentioned grating, namely the pitch of all micro optical structures of this grating is all different, and the gradual change successively of this pitch.
Display panel 110 comprises multiple display unit 111 arranged in array.
Angle is there is between the vergence direction of the micro optical structure of grating and diagonal line 112 direction of display unit 111.The intersection point in the definition vergence direction of micro optical structure and diagonal line 112 direction of display unit 111 is initial point, clockwise direction is positive dirction, and the angular range of the angle between the vergence direction of micro optical structure and diagonal line 112 direction of display unit 111 is between 10 degree to negative 5 degree.Such as, between 7 degree to negative 2 degree.For another example, can be 5 degree, 3 degree or negative 1 degree.
In addition, as shown in Figure 8, the position of the end points up and down of this grating crest line 120 is not fixed, setting range is between dotted line 121 and dotted line 122, grating set-up mode is the direction adjustment to the direction of dotted line 121 or dotted line 122 on the basis in diagonal line 112 direction of display unit 111, adjustment angle generally arrives bearing 5 degree (to 122 directions) 10 degree (to 121 directions, namely horizontal direction and the grating inclination direction of display surface is the direction of acute angle).And select to split the set-up mode of uneven angle as grating to the display unit 111 of display panel 110 from these angles.So both display unit 111 can be divided into shape similar, two parts that area approximation is equal, make again to there is angle between diagonal line 112 direction of the vergence direction of grating crest line 120 and display unit 111, this angle can reduce the width of moire fringes and allow human eye cannot divide pigtail, therefore not only moire fringes is eliminated but also fine and smooth stereoscopic picture plane display effect can be obtained, preferably display effect can be realized, and the setting range at the angle of inclination of grating setting is larger, make setting range freer, the various dot structures of two-d display panel 110 in the market can be met for the requirement suppressing moire fringes.
Be different from prior art, grating provided by the invention and 3 d display device can eliminate the impact of moire fringes on display frame effectively, improve the image quality of stereo display.Further, split equably because grating of the present invention can adopt to compare display unit 111, not only eliminate moire fringes but also fine and smooth stereoscopic picture plane display effect can be obtained, and the setting range at the angle of inclination of grating setting is larger, the various dot structures that can meet two-d display panel 110 in the market, for the requirement suppressing moire fringes, thus improve versatility and the maintainability of 3 d display device internal components.
Referring to Fig. 9, is the structural representation of the second embodiment of 3 d display device of the present invention.
A kind of 3 d display device, comprises backlight module 230, display panel 210 and grating 220.The relation that arranges between display panel 210 and grating 220 as in the first embodiment.Backlight module 230, display panel 210 and grating 220 stack.Backlight module 230 is arranged on display panel 210 afterwards to provide the illuminating ray needed for display.Grating 220 can be cylindrical lens raster, also can be slit grating.This grating 220 is the arbitrary gratings in first, second, third, fourth embodiment of above-mentioned grating, and display panel 210 comprises multiple display unit arranged in array.Backlight module 230, display panel 210 and grating 220 stack.Angle is there is between the vergence direction of the micro optical structure of grating 220 and the diagonal of display unit.
In the present embodiment, grating 220 is arranged between display panel 210 and beholder, images of left and right eyes anaglyph is made to be staggered on display panel 210, a point light action for grating 220 is utilized to be propagated to different directions by the light of images of left and right eyes anaglyph, when beholder is positioned at suitable viewing areas, its images of left and right eyes watches images of left and right eyes anaglyph respectively, just can perceive and have relief image after brain merges.
As shown in Figure 10, be the structural representation of the 3rd embodiment of 3 d display device of the present invention.
The difference of the present embodiment and this 3 d display device second embodiment is, grating 320 is arranged between backlight module 330 and display panel 310.In the present embodiment, grating 320 is for the illuminating ray that receives backlight module 330 and provide and be that direction, multiple visual field is to be directed to display panel 310 by illuminating ray cutting.Display unit on display panel 310 is modulated to show 3-D view according to the illuminating ray of display to direction, different visual field.
As shown in figure 11, be the structural representation of the 4th embodiment of 3 d display device of the present invention.
The difference of the second embodiment of the present embodiment and 3 d display device is, the display panel 410 in the present embodiment is light-emitting display panel 410, thus without the need to backlight module.This light-emitting display panel 410 can be that plasma display PDP, Field Emission Display FED, display of organic electroluminescence OLED etc. can the display panels 410 of active illuminating.This light-emitting display panel 410 renal function comprises multiple display units of matrix arrangement.The grating 420 of the present embodiment is arranged between light-emitting display panel 410 and beholder, images of left and right eyes anaglyph is made to be staggered on display panel 410, a point light action for grating 420 is utilized to be propagated to different directions by the light of images of left and right eyes anaglyph, when beholder is positioned at suitable viewing areas, its images of left and right eyes watches images of left and right eyes anaglyph respectively, just can perceive and have relief image after brain merges.In the present embodiment, grating 420 can be cylindrical lens raster, also can be slit grating.
The foregoing is only embodiments of the present invention; not thereby the scope of the claims of the present invention is limited; every utilize instructions of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (10)
1. a grating, for be propagated to different directions by light by point light action thus realize stereo display, it is characterized in that, described grating comprises the micro optical structure that multiple array is arranged, and the pitch of at least part of described micro optical structure is different.
2. grating according to claim 1, is characterized in that, the pitch of a part of described micro optical structure is different, and the gradual change successively of this pitch; Described in another part, the pitch of micro optical structure is identical.
3. grating according to claim 1, is characterized in that, the pitch of a part of described micro optical structure is different, and the random change of this pitch; Described in another part, the pitch of micro optical structure is identical.
4. grating according to claim 1, is characterized in that, the pitch of all described micro optical structures is all different, and the gradual change successively of this pitch.
5. grating according to claim 1, is characterized in that, the pitch of all described micro optical structures is all different, and the random change of this pitch.
6. a 3 d display device, is characterized in that, comprises display panel and the grating described in any one of claim 1 to 5; Described display panel comprises multiple display unit arranged in array; Described grating and described display panel stack, and there is angle between the vergence direction of described micro optical structure and the diagonal of described display unit.
7. 3 d display device according to claim 6, is characterized in that, described grating is arranged between described display panel and beholder.
8. 3 d display device according to claim 6, is characterized in that, described grating is arranged between described backlight module and described display panel.
9. the 3 d display device according to claim 7 or 8, it is characterized in that, the intersection point defining the vergence direction of described micro optical structure and the diagonal of described display unit is initial point, clockwise direction is positive dirction, and the angular range of the angle between the vergence direction of described micro optical structure and the diagonal of described display unit is between 10 degree to negative 5 degree.
10. 3 d display device according to claim 9, is characterized in that, the angular range of the angle between the vergence direction of described micro optical structure and the diagonal of described display unit is between 7 degree to negative 2 degree.
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| CN201410850564.4A CN104614793A (en) | 2014-12-30 | 2014-12-30 | Optical grating and three-dimensional display device |
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Cited By (5)
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| CN105353518A (en) * | 2015-11-06 | 2016-02-24 | 广东未来科技有限公司 | Method for reducing moire generated by stereoscopic display device |
| CN105467602A (en) * | 2015-12-07 | 2016-04-06 | 广东未来科技有限公司 | A three-dimensional display apparatus |
| CN105842858A (en) * | 2016-06-12 | 2016-08-10 | 武汉华星光电技术有限公司 | Light splitter and stereoscopic display panel |
| CN106054298A (en) * | 2016-08-23 | 2016-10-26 | 京东方科技集团股份有限公司 | Raster and 3D display device |
| CN106483667A (en) * | 2015-08-28 | 2017-03-08 | 深圳超多维光电子有限公司 | 3 d display device |
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| US10712585B2 (en) | 2016-08-23 | 2020-07-14 | Boe Technology Group Co., Ltd. | Optical grating and 3D display device |
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