CN106646902B - Naked eye 3D display double-glued micro-cylindrical lens grating device and preparation method thereof - Google Patents
Naked eye 3D display double-glued micro-cylindrical lens grating device and preparation method thereof Download PDFInfo
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- CN106646902B CN106646902B CN201710098501.1A CN201710098501A CN106646902B CN 106646902 B CN106646902 B CN 106646902B CN 201710098501 A CN201710098501 A CN 201710098501A CN 106646902 B CN106646902 B CN 106646902B
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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
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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
- G02B5/1814—Diffraction gratings structurally combined with one or more further optical elements, e.g. lenses, mirrors, prisms or other diffraction gratings
- G02B5/1819—Plural gratings positioned on the same surface, e.g. array of gratings
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Abstract
The invention relates to a double-glued micro-column lens grating device for naked eye 3D display, which is characterized in that: the device comprises a substrate, a plano-convex lens grating array, a concave-convex lens grating array and a filling layer; the plano-convex lens grating array is arranged on the upper surface of the substrate, and the concave surface of the concave-convex lens grating array is mutually matched with the convex surface of the plano-convex lens grating array; the inner side of the filling layer is covered on the convex surface of the concave-convex lens grating array, and the outer side of the filling layer is kept flat; the refraction indexes of the plano-convex lens grating array and the concave-convex lens grating array are different, and the refraction index of the filling layer is smaller than the composite effective refraction index of the plano-convex lens grating array and the concave-convex lens grating array; the invention also relates to a preparation method. The invention has the effects of reducing the size of red, green and blue three-color light dispersion spots, reducing the defocusing size, increasing the central light spot intensity, reducing the crosstalk degree and improving the transverse and axial resolution.
Description
Technical Field
The invention relates to a double-glued micro-column lens grating device for naked eye 3D display and a preparation method thereof.
Background
With advances in digital at the image processing technology and device manufacturing level, 3D displays have become a pandemic trend in the display industry. The lenticular lens liquid crystal screen is a naked eye 3D display screen, but has the defects of high crosstalk degree, few visual points, to-be-improved definition and the like, and the lenticular lens is a micro-lenticular lens array formed by parallel arrangement of a plurality of micro-lenticular lenses with identical structures. The naked eye 3D display technology has low cost and simple manufacturing process, can realize 2D/3D switching, and is popular in the market. At present, when light passes through the curved lens, the divergence direction of the common cylindrical lens unit is modulated by the curved lens, and emergent light cannot be focused on one point, but forms a large elliptical three-dimensional diffuse spot, so that monochromatic light aberration and red, green and blue light aberration are caused, and the resolution in the direction perpendicular to the cylindrical lens cylinder is reduced.
Disclosure of Invention
In view of the above, the present invention is directed to a lens grating device of a double-glued micro-column lens for naked eye 3D display and a method for manufacturing the same, which have the effects of reducing the size of red, green and blue diffuse spots, reducing the defocus size, increasing the central spot intensity, reducing the crosstalk and improving the lateral (i.e. vertical to the column direction of the column lens) and axial resolution.
In order to achieve the above purpose, the invention adopts the following technical scheme: be applied to two veneer microcolumn lens grating devices of bore hole 3D demonstration, its characterized in that: the device comprises a substrate, a plano-convex lens grating array, a concave-convex lens grating array and a filling layer; the plano-convex lens grating array is arranged on the upper surface of the substrate, and the concave surface of the concave-convex lens grating array is mutually matched with the convex surface of the plano-convex lens grating array; the inner side of the filling layer is covered on the convex surface of the concave-convex lens grating array, and the outer side of the filling layer is kept flat; the refraction indexes of the plano-convex lens grating array and the concave-convex lens grating array are different, and the refraction index of the filling layer is smaller than the composite effective refraction index of the plano-convex lens grating array and the concave-convex lens grating array.
Further, the plano-convex lens grating array is a positive lens with converging properties.
Further, the meniscus lens grating array is a negative lens with divergent properties.
Further, the plano-convex lens grating array, the concave-convex lens grating array and the filling layer are made of ultraviolet curing liquid glue.
Further, the ultraviolet curing liquid glue comprises organic silicon rubber, acrylic resin, unsaturated polyester, polyurethane and epoxy resin.
The preparation method of the double-glued micro-cylindrical lens grating device for naked eye 3D display is characterized by comprising the following steps of:
step S1: coating a first layer of transparent ultraviolet curing liquid glue on a substrate, etching the ultraviolet curing liquid glue into a plano-convex lens grating array by using a first die through a nanoimprint technology, and curing;
step S2: coating a second layer of transparent ultraviolet curing liquid glue on the plano-convex lens grating array, etching the ultraviolet curing liquid glue into a concave-convex lens grating array by using a second die through a nanoimprint technology, and curing;
step S3: and coating a third layer of transparent ultraviolet curing liquid glue on the meniscus lens grating array, etching the ultraviolet curing liquid glue into a filling layer by using a third mould through a nanoimprint technology, and curing.
Further, the curing treatment is irradiation treatment by using cold ultraviolet equipment.
Further, the imprinting surface of the first mold is a concave surface matched with the convex surface of the plano-convex lens grating array.
Further, the stamping surface of the second die is a concave surface matched with the convex surface of the concave-convex lens grating array.
Further, the stamping surface of the third die is a plane.
Compared with the prior art, the invention has the following beneficial effects: on one hand, the refractive index n1 of the plano-convex lens grating array adopted by the invention is different from the refractive index n2 of the concave-convex lens grating array, the curvature radius is different, the spherical aberration can be corrected, smaller red-green-blue diffuse spots are formed, and the resolution of the cylindrical lens in the transverse direction and the axial direction is effectively improved; on the other hand, the composite effective refractive index of the plano-convex lens grating array and the concave-convex lens grating array is larger than the refractive index n3 of the filling layer, so that the complete structure of the double-glued micro-cylindrical lens grating device is formed; finally, the transparent film filling material at the outermost layer of the grating can effectively prevent the damage of the lens grating device of the double-glued micro-column lens. The invention prepares standard mould, film pressing technology at the same time, can produce the lens grating device of the lens of the double-glue microcolumn of large-area, can save the production cost, enlarge the output; compared with the prior art, the invention overcomes the inherent defects of the common micro-cylindrical lens grating, improves the flatness, integrates the production efficiency, has long service life, remarkably enhances the light focusing property and improves the comprehensive effect of 3D display.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present invention.
FIG. 2 is a schematic view of the partial dimensions of a lenticular array of the present invention.
Fig. 3 is a schematic diagram of light modulation of a conventional grating.
Fig. 4 is a schematic diagram of the light modulation of the present invention.
FIG. 5 is a schematic illustration of the preparation flow of the present invention.
In the figure: 1-a substrate; 2-plano-convex lens grating arrays; 3-a meniscus grating array; 4-a filling layer; 5-a first mold; 6-a second mold; 7-a third mold.
Detailed Description
The invention will be further described with reference to the accompanying drawings and examples.
Referring to fig. 1, the present invention provides a double-glued micro-cylindrical lens grating device for naked eye 3D display, which is characterized in that: the device comprises a substrate 1, a plano-convex lens grating array 2, a concave-convex lens grating array 3 and a filling layer 4; the plano-convex lens grating array is arranged on the upper surface of the substrate, and the concave surface of the concave-convex lens grating array is mutually matched with the convex surface of the plano-convex lens grating array; the inner side of the filling layer is covered on the convex surface of the concave-convex lens grating array, and the outer side of the filling layer is kept flat; the refractive index n1 of the plano-convex lens grating array is different from the refractive index n2 of the concave-convex lens grating array, and n1 is smaller than n2; and the refractive index n3 of the filling layer is smaller than the composite effective refractive index of the plano-convex lens grating array and the concave-convex lens grating array, so that the grating effect is ensured.
In this embodiment, the plano-convex lens grating array is a converging positive lens; the meniscus lens grating array is a negative lens of divergent nature. Referring to fig. 2, a schematic partial view of the meniscus grating array is shown, where the thickness h1 of the middle portion is smaller than the thickness h2 of the edge.
In this embodiment, the materials of the plano-convex lens grating array, the concave-convex lens grating array and the filling layer are ultraviolet curing liquid glue; including silicone rubber, acrylic resin, unsaturated polyester, polyurethane, and epoxy resin. Preferably, the plano-convex lens grating array, the concave-convex lens grating array and the filling layer in this embodiment are made of a light-transmitting material such as polymethyl methacrylate (PMMA) or polyethylene terephthalate (PET). The substrate is made of a light-transmitting material such as glass, polymethyl methacrylate (PMMA), or polyethylene terephthalate (PET).
FIG. 3 is a schematic diagram of light modulation of a conventional grating, which is dimmed by a plano-convex lens, so that the defocus (the distance from the intersection point to the screen) of red light (R) is too large; FIG. 4 is a schematic diagram of the light modulation of the present invention, wherein the red light (R), the green light (G) and the blue light (B) are modulated into the sequence of green light (G), the red light (R) and the blue light (B) by the modulation of the plano-convex lens and the concave-convex lens; and the red, green and blue light has the same focal length in the transverse space and the longitudinal space so as to eliminate light dispersion.
Referring to fig. 5, the embodiment also provides a method for preparing a lens grating device of a double-glued micro-column for naked eye 3D display, which comprises the following steps:
step S1: coating a first layer of transparent ultraviolet curing liquid glue on a substrate, etching the ultraviolet curing liquid glue into a plano-convex lens grating array by using a first die 5 through a nanoimprint technology, and curing; removing the first mould to form a layer of transparent film, namely a plano-convex lens grating array, on the substrate; the stamping surface of the first die is a concave surface matched with the convex surface of the plano-convex lens grating array. In this step, the refractive index of the ultraviolet-curable liquid adhesive after curing is substantially identical to that of the substrate material.
Step S2: coating a second layer of transparent ultraviolet curing liquid glue on the plano-convex lens grating array, etching the ultraviolet curing liquid glue into a concave-convex lens grating array by using a second die 6 through a nanoimprint technology, and curing; removing the second mould to form a transparent film layer, namely a concave-convex lens grating array, on the plano-convex lens grating array; the stamping surface of the second die is a concave surface matched with the convex surface of the concave-convex lens grating array. In the step, the refractive index of the ultraviolet curing liquid glue after curing is inconsistent with that of the plano-convex lens grating array.
Step S3: coating a third layer of transparent ultraviolet curing liquid glue on the meniscus lens grating array, etching the ultraviolet curing liquid glue into a filling layer by using a third die 7 through a nanoimprint technology, and curing; and removing the third die, and forming a layer of transparent film and a filling layer on the concave-convex lens grating array. The filling layer fills up the convex surface of the concave-convex lens grating array. The stamping surface of the third die is a plane.
In this embodiment, the curing process is an irradiation process performed by using a cold ultraviolet device.
The foregoing description is only of the preferred embodiments of the invention, and all changes and modifications that come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Claims (1)
1. The utility model provides a two veneer microcolumn lens grating device of bore hole 3D demonstration which characterized in that: the device comprises a substrate, a plano-convex lens grating array, a concave-convex lens grating array and a filling layer; the plano-convex lens grating array is arranged on the upper surface of the substrate, and the concave surface of the concave-convex lens grating array is mutually matched with the convex surface of the plano-convex lens grating array; the inner side of the filling layer is covered on the convex surface of the concave-convex lens grating array, and the outer side of the filling layer is kept flat; the refraction indexes of the plano-convex lens grating array and the concave-convex lens grating array are different, and the refraction index of the filling layer is smaller than the composite effective refraction index of the plano-convex lens grating array and the concave-convex lens grating array;
the plano-convex lens grating array is a positive lens with converging property;
the concave-convex lens grating array is a negative lens with divergent properties;
the plano-convex lens grating array, the concave-convex lens grating array and the filling layer are made of ultraviolet curing liquid glue;
the ultraviolet curing liquid glue comprises organic silicon rubber, acrylic resin, unsaturated polyester, polyurethane and epoxy resin;
the refractive index n1 of the adopted plano-convex lens grating array is different from the refractive index n2 of the concave-convex lens grating array, and the curvature radius is different to correct spherical aberration, so that small red, green and blue diffuse spots are formed, and the resolution of the cylindrical lens in the transverse direction and the axial direction is effectively improved; on the other hand, the composite effective refractive index of the plano-convex lens grating array and the concave-convex lens grating array is larger than the refractive index n3 of the filling layer, so that the complete structure of the double-glued micro-column lens grating device is formed; the transparent film filling material at the outermost layer of the grating is used for effectively preventing the damage of the lens grating device of the double-glued micro-column lens;
the method comprises the steps of modulating red light, green light and blue light into green light, red light and blue light in sequence through modulation of a plano-convex lens and a concave-convex lens; the red, green and blue light has the same focal length in the transverse space and the longitudinal space so as to eliminate light dispersion;
the preparation method comprises the following steps:
step S1: coating a first layer of transparent ultraviolet curing liquid glue on a substrate, etching the ultraviolet curing liquid glue into a plano-convex lens grating array by using a first die through a nanoimprint technology, and curing; removing the first mould to form a layer of transparent film, namely a plano-convex lens grating array, on the substrate; the stamping surface of the first die is a concave surface matched with the convex surface of the plano-convex lens grating array; in the step, the refractive index of the ultraviolet curing liquid glue after curing is basically consistent with that of the substrate material;
step S2: coating a second layer of transparent ultraviolet curing liquid glue on the plano-convex lens grating array, etching the ultraviolet curing liquid glue into a concave-convex lens grating array by using a second die through a nanoimprint technology, and curing; removing the second mould to form a transparent film layer, namely a concave-convex lens grating array, on the plano-convex lens grating array; the stamping surface of the second die is a concave surface matched with the convex surface of the concave-convex lens grating array; in the step, the refractive index of the ultraviolet curing liquid glue after curing is inconsistent with that of the plano-convex lens grating array;
step S3: coating a third layer of transparent ultraviolet curing liquid glue on the meniscus lens grating array, etching the ultraviolet curing liquid glue into a filling layer by using a third mould through a nanoimprint technology, and curing; removing the third mould, and forming a layer of transparent film and a filling layer on the concave-convex lens grating array; the filling layer fills up the convex surface of the concave-convex lens grating array; the stamping surface of the third die is a plane.
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| CN201710098501.1A CN106646902B (en) | 2017-02-23 | 2017-02-23 | Naked eye 3D display double-glued micro-cylindrical lens grating device and preparation method thereof |
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| CN108061974A (en) * | 2017-12-12 | 2018-05-22 | 深圳超多维科技有限公司 | Lenticulation device, 3 d display device, the production method of lenticulation device |
| CN108956467B (en) * | 2018-08-09 | 2022-04-22 | 京东方科技集团股份有限公司 | Micro-fluidic chip and working method thereof |
| FR3093569B1 (en) * | 2019-03-04 | 2021-03-12 | Alioscopy | PROCESS FOR MANUFACTURING AN AUTOSTEREOSCOPIC SCREEN AND PROCESS FOR TRANSFORMATION OF A DISPLAY SCREEN OF A TWO-DIMENSIONAL IMAGE INTO AN AUTOSTEREOSCOPIC IMAGE DISPLAY SCREEN |
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| JPH10319878A (en) * | 1997-05-21 | 1998-12-04 | Toshiba Corp | Liquid crystal display device |
| JP2000305041A (en) * | 1999-04-26 | 2000-11-02 | Hit Design:Kk | Convex lens array display with picture and its manufacture |
| CN101349770A (en) * | 2008-09-02 | 2009-01-21 | 北京超多维科技有限公司 | Lens components and stereo display device including the same |
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| CN206573791U (en) * | 2017-02-23 | 2017-10-20 | 集美大学 | Double glued microtrabeculae lenticulation devices that a kind of bore hole 3D is shown |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101542357B (en) * | 2007-05-18 | 2011-12-07 | 松下电器产业株式会社 | Three-dimensional image display device |
| CN101464623B (en) * | 2008-12-17 | 2011-01-26 | 顾金昌 | Synthesizing method for digital stereo enlarging print optical grating and sensitive material |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10319878A (en) * | 1997-05-21 | 1998-12-04 | Toshiba Corp | Liquid crystal display device |
| JP2000305041A (en) * | 1999-04-26 | 2000-11-02 | Hit Design:Kk | Convex lens array display with picture and its manufacture |
| CN101349770A (en) * | 2008-09-02 | 2009-01-21 | 北京超多维科技有限公司 | Lens components and stereo display device including the same |
| CN202443141U (en) * | 2012-02-23 | 2012-09-19 | 京东方科技集团股份有限公司 | Color filter substrate and 3D display device |
| CN206573791U (en) * | 2017-02-23 | 2017-10-20 | 集美大学 | Double glued microtrabeculae lenticulation devices that a kind of bore hole 3D is shown |
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