CN109239935A - A kind of More's imaging system - Google Patents
A kind of More's imaging system Download PDFInfo
- Publication number
- CN109239935A CN109239935A CN201811367588.9A CN201811367588A CN109239935A CN 109239935 A CN109239935 A CN 109239935A CN 201811367588 A CN201811367588 A CN 201811367588A CN 109239935 A CN109239935 A CN 109239935A
- Authority
- CN
- China
- Prior art keywords
- micro
- picture
- imaging system
- text
- microporous layers
- Prior art date
- 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
- 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
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/60—Systems using moiré fringes
Abstract
The invention discloses a kind of More's imaging systems, including microporous layers, the microporous layers have the through-hole structure of array, and the through hole forms transmittance section, light shielding part is formed at the non through hole of the microporous layers, the microporous layers include the first surface and second surface being oppositely arranged;Micro- picture and text layer is located on first surface, and micro- picture and text layer includes micro- picture and text unit of one or more array arrangement, and micro- picture and text unit is located at transmittance section side;Micro-lens arrays layer is located in the second plane, and the micro-lens arrays layer includes multiple lenticules, and the other side of the transmittance section is arranged in the lenticule, and the stereoscopic effect of micro- picture and text unit is able to observe that by the micro-lens arrays layer.Crosstalk, thus the image with direction visual angle will not occur for the sampling between its different lenticule, have significant application effect in the fields such as stereoscopic display, anti-fake.
Description
Technical field
The present invention relates to optical image technology fields, and in particular to a kind of More's imaging system.
Background technique
From the eighties in last century, the development of optical technology is so that root has occurred in transmission, storage, display and the processing of information
The variation of person's character.Micro-optics technology and device are one of fields with fastest developing speed.Microlens array, as a kind of newer array
Optical element has the advantages that structure is small, light-weight, and each unit has independent optical axis and Ray tracing mode, can be with
The effects of playing diffusion, shaping, uniform, focusing, imaging, is widely used to imaging and lighting area at present.
Microlens array anti-counterfeiting technology samples (i.e. not micro- picture and text array as sampling tool using microlens array
That imaging system), it can be achieved that diversified visual effect.The patent that Chinese Patent Application No. is CN201120397444.8 is public
A kind of 3D imaging film is opened, it includes transparent spacers which, which is imaged film, is respectively arranged in the two sides of transparent spacers and is in
The micro- picture and text cell array layer of micro- reflection focusing unit array and surface of asymmetry arrangement.Chinese Patent Application No. is
The patent of CN101970243A discloses the design method for realizing the micro- picture and text of engagement of multiple image.However, not increasing visual field
Diaphragm, and vignetting effect is not considered ideally, the visual field of each lenticule covers entire object plane, i.e., from object
Every light may pass through microlens array imaging.The incident ray incidence angular difference of different lenticule units can cause unit
The chief ray image height of system is different, and optical system unit is caused to lose linear invariance, and lenticule focal plane is caused to produce
It generates as crosstalk, parallax occurs, seriously affect visual effect.
Summary of the invention
More's imaging system based on microlens array that the technical problem to be solved in the present invention is to provide a kind of, difference are micro-
Crosstalk, thus the image with direction visual angle will not occur for the sampling between lens, have in the fields such as stereoscopic display, anti-fake and answer
With.
More's imaging system based on microlens array that in order to solve the above-mentioned technical problems, the present invention provides a kind of, packet
It includes:
Microporous layers, the microporous layers have the through-hole structure of array, and the through hole forms transmittance section, the microporous layers
Non through hole at formed light shielding part, the microporous layers include the first surface and second surface being oppositely arranged;Micro- picture and text layer, position
In on first surface, micro- picture and text layer includes micro- picture and text unit of one or more array arrangement, micro- picture and text unit
Positioned at transmittance section side;Micro-lens arrays layer is located in the second plane, and the micro-lens arrays layer includes multiple lenticules,
The other side of the transmittance section is arranged in the lenticule, is able to observe that micro- picture and text list by the micro-lens arrays layer
The stereoscopic effect of member.
Preferably, the mirror surface of the lenticule has plano-convex structure or biconvex structure.
Preferably, the arrangement mode of the micro-lens arrays layer is cylindrical lens array, globe lens array and luxuriant and rich with fragrance alunite
One or more kinds of combinations in your lens array.
Preferably, the array arrangement of the microporous layers is identical as the arrangement of the micro-lens arrays layer.
Preferably, the bore range of the lenticule is 0.01mm to 0.5mm.
Preferably, the distance between adjacent described lenticule range is 0.005mm to 0.1mm.
Preferably, the shielding layer has the optical transmittance not higher than 5%.
Preferably, the characteristic width range of the shielding layer is 0.005mm to 0.1mm.
Preferably, micro- picture and text unit includes micro- picture and text stroke, micro- picture and text stroke is with aperiodic and non-solid
Determine the form arrangement of geometry.
The present invention also provides a kind of optical imaging system, above-mentioned More's imaging system.
Beneficial effects of the present invention:
1, the present invention proposes a kind of More's imaging system, by the collective effect of micro-lens arrays layer and microporous layers, so that
Human eye can only see moir é pattern in the angle by structural constraint, so that system is imaged in the More for providing a kind of directionality
System.
2, microporous layers are set in the present invention, due to the setting of light shielding part, crosstalk will not occur for the sampling between different lenticules,
Parallax will not be generated, visual effect is improved.
3, of the invention to have wide range of applications, there is application value in imaging, stereoscopic display and the fields such as anti-fake.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the embodiment of the present invention one;
Fig. 2 is the schematic illustration of the embodiment of the present invention one;
Fig. 3 is the structural schematic diagram of the embodiment of the present invention two;
Fig. 4 is the structural schematic diagram of the embodiment of the present invention three;
Fig. 5 is the structural schematic diagram of the embodiment of the present invention four;
Fig. 6 is the structural schematic diagram of the embodiment of the present invention five;
Fig. 7 is the structural schematic diagram of the embodiment of the present invention six.
Figure label explanation: 1, micro-lens arrays layer;2, microporous layers;3, micro- picture and text layer;11, lenticule;12, the second carrying
Body;21, transmittance section;22, light shielding part;221, the first transparent area;222, the first shading region;223, the second transparent area;224, second
Shading region;31, micro- picture and text unit;32, the first supporting body;40, the first light;41, the second light;43, third light;50,
Four light;51, the 5th light;52, the 6th light.
Specific embodiment
The present invention will be further explained below with reference to the attached drawings and specific examples, so that those skilled in the art can be with
It more fully understands the present invention and can be practiced, but illustrated embodiment is not as a limitation of the invention.
It is the structural schematic diagram of the embodiment of the present invention one, it discloses one kind to be based on microlens array shown in referring to Fig.1
More's imaging system, including micro- picture and text layer 3, microporous layers 2 and micro-lens arrays layer 1.
Microporous layers 2 have the through-hole structure of array, and through hole forms transmittance section 21, formed and hidden at the non through hole of microporous layers
Light portion 22, microporous layers 2 include the first surface and second surface being oppositely arranged
Micro- picture and text layer 3 is located on first surface, and micro- picture and text layer 3 includes micro- picture and text unit of one or more array arrangement
31, micro- picture and text unit 31 is located at the side of transmittance section 21.
Micro-lens arrays layer 1 is located in the second plane, and micro-lens arrays layer 1 includes multiple lenticules 11, and lenticule 11 is set
The other side in transmittance section 21 is set, the stereoscopic effect of micro- picture and text unit 31 is able to observe that by micro-lens arrays layer 1.
In the present embodiment, the mirror surface of lenticule 11 is the plano-convex structure to raise upward, and the lenticule is towards on the outside of system
Protrusion.
The arrangement mode of micro-lens arrays layer 1 is one in cylindrical lens array, globe lens array and fresnel lens array
Kind or multiple combinations.The array arrangement of microporous layers 2 is identical in the arrangement of the micro-lens arrays layer 1.Wherein, the mouth of lenticule
Diameter range is 0.01mm to 0.5mm.The distance between adjacent lenticule range is 0.005mm to 0.1mm.And shielding layer
With the optical transmittance for being not higher than 5%.The characteristic width range of shielding layer is 0.005mm to 0.1mm.The refraction of lenticule 11
Rate is n1, and the refractive index in microporous layers is n2, wherein n1Greater than n2, and n1With n2Refringence absolute value be 0.01~0.3.
In addition, micro- picture and text unit 31 includes micro- picture and text stroke, micro- picture and text stroke is with aperiodic and on-fixed geometric form
The form of shape arranges.
Fig. 2 is the schematic illustration of the embodiment of the present invention one.When the first light 40 is incident perpendicular to the first supporting body 32
When, light passes through microlens array 111 and transmittance section 21, focuses on micro- picture and text unit 31.The present invention, which provides, only forms one
There is Macrovision composograph one of solid, deformation, scaling, rotation, special movement effect or a variety of combinations to imitate
Fruit.The microlens array period is set as P1, and micro- picture and text array period is set as P2, and two periods angle of orientation is set as θ.If r=P1/
P2 will form the Macrovision composograph of amplification moved in the same direction with visual angle change as r ≠ 1, θ=0o.Work as r=1, θ ≠
0o and when less than 1 degree, will form the Macrovision composograph of amplification vertically moved with visual angle change.As r ≠ 1, θ ≠ 0o
When, the deformation for forming amplification is had into the Macrovision composograph for moving irregularly effect.The dislocation only influences this
Visual pattern is in the starting point of the optical effect process, without influencing identification of the user to the visual pattern.When the second light 41
It is oblique at a certain angle to be incident upon imaging system, it is focused by lenticule 11, by transmittance section 21, focuses on micro- picture and text unit 31
Edge.Critical angle of incidence can be calculated asWherein D is lenticule bore, and h is microcell length.When third light
43 incident angles are greater than critical angle of incidence θcWhen, light shielding part 22 is converged at, then cannot observe micro- picture and text at the visual angle.Traditional
The not set light shielding part 22 of More's image device, because third light 43 is oblique incidence light, oblique incidence light without light shielding part 22
It will be sampled from the micro- picture and text closed on, to can observe moir é pattern under large viewing.By shielding layer, realizes and only limit
In More's image device of narrow viewing angle.
It is the structural schematic diagram of the embodiment of the present invention two, it discloses one kind to be based on microlens array referring to shown in Fig. 3
More's imaging system.Wherein, relative to embodiment one, light shielding part 22 is replaced with into the first transparent area 221 and the first shading region
222.First transparent area, 221 shading, and 222 shading of the first shading region.First transparent area 221 is located at 222 upside of the first shading region,
I.e. the first shading region 222 is connect with micro- picture and text layer 3.Relative to embodiment one, due to the presence of the first transparent area 221, this implementation
Example allows more light to enter More's imaging system, improves the light efficiency of system.
It is the structural schematic diagram of the embodiment of the present invention three, it discloses one kind to be based on microlens array referring to shown in Fig. 4
More's imaging system.Wherein, relative to embodiment one, light shielding part 22 is replaced with into the second transparent area 223 and the second shading region
224.Second transparent area, 223 light transmission, 224 shading of the second shading region.Second light shielding part 41 is located at the upside of the second transparent area 223,
Second transparent area 223 is connect with micro- picture and text layer 3.Relative to embodiment one and embodiment two, in the present embodiment, some light can be with
Through the second transparent area 223, it is sampled into adjacent micro- picture and text.
It referring to Figure 5, is the structural schematic diagram of the embodiment of the present invention four, it discloses one kind to be based on microlens array
More's imaging system.Wherein, relative to embodiment one, lenticule 11 has plano-convex structure, but its convex surface is carried towards first
Body 13 is arranged, i.e., towards system memory.The second supporting body 12 is additionally provided on lenticule 11.Light shielding part 22 plays blocking and closes on
The effect of lenticule stray light.
It is the structural schematic diagram of the embodiment of the present invention five, it discloses one kind to be based on microlens array referring to shown in Fig. 6
More's imaging system.Wherein, relative to example IV, lenticule 11 has a biconvex structure, and convex surface is towards system memory.It is micro-
The refractive index of mirror 11 is n1, and the refractive index in microporous layers is n2, wherein n1Greater than n2, and n1With n2Refringence absolute value be
0.01~0.3, or be 0.02~0.25.Light shielding part 22 plays the role of stopping to close on lens stray light.It is double in the present embodiment
List convex lenticule of the lenticule of male structure relative to identical bore has shorter focal length, so as to effectively reduce shading
The thickness in portion 22 reduces manufacture craft difficulty.
It is the structural schematic diagram of the embodiment of the present invention six, it discloses one kind to be based on microlens array referring to shown in Fig. 7
More's imaging system.Relative to embodiment one, 13 surface shape of the light shielding part 22 of microporous layers and transmittance section 21 and the first supporting body
At certain tilt angle, i.e. light shielding part 22 and transmittance section 21 is not vertically arranged with the first supporting body 13, holds similar to first
The microporous layers with inclined hole are provided on carrier.
At this point, the 4th light 51 of normal incidence light will no longer be able to focus on micro- picture and text, only when incidence angle with masking
Identical the 5th light 50 of incident ray of 122 differently- oriented directivity of layer can just focus on micro- picture and text unit 31, form a macroscopic view view
Feel composograph, there is one of solid, deformation, scaling, rotation, special movement effect or a variety of combined effects.When with
Other angular observation samples, such as direction of the 6th incident ray 52, are influenced by light shielding part 22, will be unable to observe micro- picture and text layer
Moir é pattern.
Embodiment described above is only to absolutely prove preferred embodiment that is of the invention and being lifted, protection model of the invention
It encloses without being limited thereto.Those skilled in the art's made equivalent substitute or transformation on the basis of the present invention, in the present invention
Protection scope within.Protection scope of the present invention is subject to claims.
Claims (10)
1. a kind of More's imaging system characterized by comprising
Microporous layers, the microporous layers have the through-hole structure of array, and the through hole forms transmittance section,
Form light shielding part at the non through hole of the microporous layers, the microporous layers include the first surface that is oppositely arranged and
Second surface;
Micro- picture and text layer is located on first surface, and micro- picture and text layer includes micro- picture and text list of one or more array arrangement
Member, micro- picture and text unit are located at transmittance section side;
Micro-lens arrays layer is located in the second plane, and the micro-lens arrays layer includes multiple lenticules,
The other side of the transmittance section is arranged in the lenticule, is able to observe that micro- figure by the micro-lens arrays layer
The stereoscopic effect of literary unit.
2. More's imaging system as described in claim 1, which is characterized in that the mirror surface of the lenticule have plano-convex structure or
Biconvex structure.
3. More's imaging system as described in claim 1, which is characterized in that the arrangement mode of the micro-lens arrays layer is column
One or more kinds of combinations in lens array, globe lens array and fresnel lens array.
4. More's imaging system as claimed in claim 3, which is characterized in that the array arrangement of the microporous layers and described micro-
The arrangement of lens array layer is identical.
5. More's imaging system as described in claim 1, which is characterized in that the bore range of the lenticule be 0.01mm extremely
0.5mm。
6. More's imaging system as described in claim 1, which is characterized in that the distance between adjacent described lenticule range
For 0.005mm to 0.1mm.
7. More's imaging system as described in claim 1, which is characterized in that the shielding portion has the optics not higher than 5%
Transmitance.
8. More's imaging system as described in claim 1, which is characterized in that the refringence of the lenticule and microporous layers is exhausted
It is 0.01~0.3 to value.
9. More's imaging system as described in claim 1, which is characterized in that micro- picture and text unit includes micro- picture and text stroke,
Micro- picture and text stroke is arranged in the form of aperiodic and on-fixed geometry.
10. a kind of optical imaging system, which is characterized in that including More described in any one of claim 1 to 9 claim
Imaging system.
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Cited By (5)
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CN110133767A (en) * | 2019-05-09 | 2019-08-16 | 中国科学院光电技术研究所 | A kind of optimization method of Dynamically Announce anti-counterfeiting technology microlens array |
CN112505938A (en) * | 2019-08-26 | 2021-03-16 | 昇印光电(昆山)股份有限公司 | Stereo imaging film |
CN113946002A (en) * | 2020-07-17 | 2022-01-18 | 英属开曼群岛商音飞光电科技股份有限公司 | Moire pattern imaging device |
CN114200691A (en) * | 2021-12-02 | 2022-03-18 | 安徽省东超科技有限公司 | Microlens array imaging element and imaging device |
EP3921574B1 (en) | 2019-02-08 | 2022-10-05 | Signify Holding B.V. | A lighting device |
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Application publication date: 20190118 |