CN106443852A - Spherical surface optical grating - Google Patents
Spherical surface optical grating Download PDFInfo
- Publication number
- CN106443852A CN106443852A CN201610963286.2A CN201610963286A CN106443852A CN 106443852 A CN106443852 A CN 106443852A CN 201610963286 A CN201610963286 A CN 201610963286A CN 106443852 A CN106443852 A CN 106443852A
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- China
- Prior art keywords
- grating
- coquille
- spheric
- optical grating
- meets
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- 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.)
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Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/18—Diffraction gratings
- G02B5/1814—Diffraction gratings structurally combined with one or more further optical elements, e.g. lenses, mirrors, prisms or other diffraction gratings
-
- 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
-
- 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
- G02B5/00—Optical elements other than lenses
- G02B5/18—Diffraction gratings
- G02B2005/1804—Transmission gratings
Abstract
The invention discloses a spherical surface optical grating. The optical grating comprises a transparent substrate and a spherical surface optical grating layer located on the front face of the transparent substrate; the spherical surface optical grating layer is formed by spherical mirrors distributed in a dot matrix mode, and the distance a of the center points of every two adjacent dot spherical mirrors meets the equation: 2D<=a<=20 D, wherein D represents the diameter of the spherical mirror. The machining difficulty of the spherical surface optical grating is reduced by increasing the distance between the adjacent spherical mirrors in the spherical surface optical grating layer, and the large-breadth spherical surface optical grating is convenient to manufacture. In addition, the space distribution density of the spherical mirrors is reduced, and the requirement for output precision of miniature images is lowered.
Description
Technical field
The present invention relates to optics display technology field, more particularly to a kind of spheric grating.
Background technology
Grating three-dimensional picture watches the good advantage of free, the strong and adaptability of third dimension because of its bore hole, in photography, advertisement, print
The industry such as brush and decoration is progressively popularized.In the prior art, there is a class to be composited by 3 D grating and micro picture
Grating three-dimensional picture.Wherein, 3 D grating be mainly column mirror grating, slit grating, spheric grating etc., micro picture be by
A series of repeat patterns are constituted.As amplification effect of each repeat patterns after the amplification of 3 D grating micro mirror is different, therefore
Whole micro picture just looks there is third dimension.
In the prior art, the most close-packed arrays of the coquille of composition spheric grating.Such as, patent 201310145965.5
Disclose a kind of structure of rectangle spheric grating.In that patent, the grating layer of rectangle spheric grating is by dot matrix distribution and tight
The rectangle coquille of solid matter row is constituted.In addition, Fig. 1, Fig. 2 show a kind of hexagon spheric grating present in prior art.
From Fig. 1, Fig. 2, the grating layer of the spheric grating is by dot matrix distribution and compact arranged hexagon coquille is constituted.By
Adjacent coquille close-packed arrays in existing spheric grating so that grating difficulty of processing is big, high processing costs, obtainable
Grating breadth is little.Further, since the spacial distribution density of coquille is excessive, increases and the output accuracy of micro picture is required.
For the defect of prior art, a kind of new spheric grating structure being needed badly, is added with reducing grating difficulty of processing, reducing
Work cost, increase grating output breadth, reduction are required to the output accuracy of micro picture.
Content of the invention
It is an object of the invention to a kind of new spheric grating structure is proposed, to reduce grating difficulty of processing, reduce processing
Cost, increase grating output breadth, reduction are required to the output accuracy of micro picture.
The invention provides a kind of spheric grating, the grating includes：Transparent substrate, the sphere positioned at transparent substrate front
Grating layer；The spheric grating layer is made up of the coquille in dot matrix distribution, and spacing a of the central point of two neighboring coquille
Meet：2D≤a≤20D；Wherein, D is the diameter of coquille.
Preferably, the thickness of the grating meets：
In formula, d is the thickness of grating, and n is the refractive index of coquille, and R is the radius of curvature of coquille.
Preferably, the thickness d of the grating also meets：
d≤0.3mm.
Preferably, the height of the spheric grating layer meets：
0 ＜ h≤R；
In formula, h is the height of spheric grating layer.
Preferably, the spheric grating layer also meets：Angle between the adjacent coquille line of centres is 60 °.
Preferably, the spheric grating layer also meets：Angle between the adjacent coquille line of centres is 90 °.
Preferably, the spheric grating layer also meets：
R≤30μm；
Wherein, R is the radius of curvature of coquille.
As can be seen from the above technical solutions, the spheric grating that the present invention is provided mainly includes：Transparent substrate, be located at transparent
The spheric grating layer in substrate front.Wherein, the spheric grating layer is made up of the coquille in dot matrix distribution, and two neighboring ball
Spacing a of the central point of face mirror meets：2D≤a≤20D；D is the diameter of coquille.The present invention is by increasing in spheric grating layer
The distance between adjacent coquille, reduces the difficulty of processing of spheric grating, is easy to make the spheric grating of large format.In addition,
Spacial distribution density due to coquille reduces, and reduces and the output accuracy of micro picture is required.
Description of the drawings
By the specific embodiment part of offer referring to the drawings, the features and advantages of the present invention will become more
Easy to understand, in the accompanying drawings：
Fig. 1 is a kind of structural representation of existing spheric grating；
Fig. 2 is the distribution schematic diagram of spheric grating layer in spheric grating shown in Fig. 1；
Fig. 3 is the structural representation of the spheric grating of the embodiment of the present invention；
Fig. 4 is the first distribution schematic diagram of spheric grating layer in spheric grating shown in Fig. 3；
Fig. 5 is second distribution schematic diagram of spheric grating layer in spheric grating shown in Fig. 3；
1st, spheric grating layer；2nd, transparent substrate.
Specific embodiment
With reference to the accompanying drawings the illustrative embodiments of the present invention are described in detail.Illustrative embodiments are retouched
State merely for the sake of demonstration purpose, and definitely not to the present invention and its application or the restriction of usage.
In existing spheric grating structure, the coquille generally arrangement in spheric grating layer is tight.Such as, Fig. 1, Fig. 2
The hexagon spheric grating structure for illustrating.So, although reduce the area of non-imaged areas in grating, but be increased
The distribution density of coquille, so as to cause the little output accuracy to micro picture of grating processing difficulties, obtainable grating breadth
The problems such as having high demands.For the problem that existing spheric grating is present, the present inventor proposes a kind of new sphere light
Grid structure.
With specific embodiment, technical scheme is described in detail below in conjunction with the accompanying drawings.
Fig. 3 shows the structural representation of the spheric grating in the embodiment of the present invention.It can be seen from figure 3 that the spheric grating tool
Body includes：Transparent substrate 2, the spheric grating layer 1 positioned at 2 front of transparent substrate.Also, spheric grating layer 1 is distributed by dot matrix
Coquille constitute, spacing a of the central point of two neighboring coquille meets：2D≤a≤20D.Wherein, D is the straight of coquille
Footpath.
In embodiments of the present invention, due to no longer using the compact arranged mode of traditional coquille, but by adjacent ball
The distance between face mirror is widened and is defined the spacing of adjacent coquille, so as to both ensure that certain three-dimensional imaging effect
Really, the difficulty of processing for reducing 3 D grating again, the output breadth for increasing 3 D grating, output to micro picture is reduced
Required precision, reduce the configuration required precision of 3 D grating and micro picture.
In this embodiment, preferably, the thickness d of spheric grating meets：
In formula, n is the refractive index of coquille, and R is the radius of curvature of coquille.
In embodiments of the present invention, the thickness of spheric grating is limited by formula 1, can make to gather through the light of coquille
Jiao at the back side of transparent substrate, so as to improve three-dimensional imaging effect.In addition, in the specific implementation, the thickness d one of spheric grating
As also meet：d≤0.3mm.It is pointed out that as the thickness of spheric grating layer 1 is less, it might even be possible to ignore, therefore, exist
Generally can be by the thickness for being all whole spheric grating such as approximate for the thickness of transparent substrate when being embodied as.
In addition, in the specific implementation, the height h of spheric grating layer 1 also meets：0 ＜ h≤R.In addition, at one preferably
In embodiment, the radius of curvature of the coquille in spheric grating layer 1 also meets：R≤30μm.By rationally arranging spheric grating layer
Height and coquille radius of curvature, be conducive to improve 3 D grating image quality.
Fig. 4 shows the first distribution schematic diagram of spheric grating layer in the embodiment of the present invention.Fig. 5 shows reality of the present invention
Apply second distribution schematic diagram of spheric grating layer in example.Folder in the first distribution, between the adjacent coquille line of centres
Angle is 60 °.Such as, in the diagram, line between the line between coquille a, coquille b, with coquille b, coquille c
Angle is 60 °.In second distribution, the angle between the adjacent coquille line of centres is 90 °.Such as, in Figure 5, sphere
The angle of the line between the line between mirror d, coquille e, with coquille d, coquille f is 90 °.It is pointed out that with
The distribution mode of upper simply two kinds of preferred spheric grating layers, in the specific implementation, those skilled in the art can also be as needed
Choose other distribution modes.Such as, 45 ° are set to the angle between the adjacent coquille line of centres.
Although with reference to illustrative embodiments, invention has been described, but it is to be understood that the present invention does not limit to
The specific embodiment that Yu Wenzhong is described in detail and illustrated, in the case of without departing from claims limited range, this
Skilled person can make various changes to the illustrative embodiments.
Claims (7)
1. a kind of spheric grating, it is characterised in that the grating includes：Transparent substrate, the sphere light positioned at transparent substrate front
Gate layer；The spheric grating layer is made up of the coquille in dot matrix distribution, and spacing a of the central point of two neighboring coquille is full
Foot：2D≤a≤20D；Wherein, D is the diameter of coquille.
2. grating as claimed in claim 1, wherein, the thickness of the grating meets：
In formula, d is the thickness of grating, and n is the refractive index of coquille, and R is the radius of curvature of coquille.
3. grating as claimed in claim 2, wherein, the thickness d of the grating also meets：
d≤0.3mm.
4. grating as claimed in claim 3, wherein, the height of the spheric grating layer meets：
0 ＜ h≤R；
In formula, h is the height of spheric grating layer.
5. grating as claimed in claim 4, wherein, the spheric grating layer also meets：Between the adjacent coquille line of centres
Angle be 60 °.
6. grating as claimed in claim 4, wherein, the spheric grating layer also meets：Between the adjacent coquille line of centres
Angle be 90 °.
7. the grating as described in claim 1-6 is arbitrary, wherein, the spheric grating layer also meets：
R≤30μm；
Wherein, R is the radius of curvature of coquille.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610963286.2A CN106443852A (en) | 2016-10-28 | 2016-10-28 | Spherical surface optical grating |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610963286.2A CN106443852A (en) | 2016-10-28 | 2016-10-28 | Spherical surface optical grating |
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| CN106443852A true CN106443852A (en) | 2017-02-22 |
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| CN201610963286.2A Pending CN106443852A (en) | 2016-10-28 | 2016-10-28 | Spherical surface optical grating |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102398466A (en) * | 2011-11-24 | 2012-04-04 | 郑州恒昊玻璃技术有限公司 | Stereograph and making method thereof |
| CN102991860A (en) * | 2011-09-08 | 2013-03-27 | 上海天臣防伪技术股份有限公司 | Packaging film with anti-fake function with three-dimensional dynamic displaying effect |
| CN104035148A (en) * | 2014-06-20 | 2014-09-10 | 上海天臣包装材料有限公司 | Hemispherical microlens array film capable of showing double-layered three-dimensional image-texts |
| CN104122672A (en) * | 2014-07-24 | 2014-10-29 | 四川大学 | Three dimensional (3D) displayer based on micro-spherical lens array |
| CN104635337A (en) * | 2015-02-17 | 2015-05-20 | 吉林大学 | Design method of honeycomb type lens array capable of improving stereo image display resolution |
| CN105005106A (en) * | 2015-06-01 | 2015-10-28 | 陈昭红 | Honeycomb slightly convex grating, and preparation method and application thereof |
| CN205374782U (en) * | 2015-07-08 | 2016-07-06 | 昇印光电（昆山）股份有限公司 | Little optical imaging system |
| WO2016152771A1 (en) * | 2015-03-20 | 2016-09-29 | 日本碍子株式会社 | Grating element |
| CN206114938U (en) * | 2016-10-28 | 2017-04-19 | 北京康得新三维科技有限责任公司 | Spheric grating |
-
2016
- 2016-10-28 CN CN201610963286.2A patent/CN106443852A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102991860A (en) * | 2011-09-08 | 2013-03-27 | 上海天臣防伪技术股份有限公司 | Packaging film with anti-fake function with three-dimensional dynamic displaying effect |
| CN102398466A (en) * | 2011-11-24 | 2012-04-04 | 郑州恒昊玻璃技术有限公司 | Stereograph and making method thereof |
| CN104035148A (en) * | 2014-06-20 | 2014-09-10 | 上海天臣包装材料有限公司 | Hemispherical microlens array film capable of showing double-layered three-dimensional image-texts |
| CN104122672A (en) * | 2014-07-24 | 2014-10-29 | 四川大学 | Three dimensional (3D) displayer based on micro-spherical lens array |
| CN104635337A (en) * | 2015-02-17 | 2015-05-20 | 吉林大学 | Design method of honeycomb type lens array capable of improving stereo image display resolution |
| WO2016152771A1 (en) * | 2015-03-20 | 2016-09-29 | 日本碍子株式会社 | Grating element |
| CN105005106A (en) * | 2015-06-01 | 2015-10-28 | 陈昭红 | Honeycomb slightly convex grating, and preparation method and application thereof |
| CN205374782U (en) * | 2015-07-08 | 2016-07-06 | 昇印光电（昆山）股份有限公司 | Little optical imaging system |
| CN206114938U (en) * | 2016-10-28 | 2017-04-19 | 北京康得新三维科技有限责任公司 | Spheric grating |
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Application publication date: 20170222 |