CN206573791U - Double glued microtrabeculae lenticulation devices that a kind of bore hole 3D is shown - Google Patents

Abstract

The utility model relates to a double-glued microcolumn lens grating device for naked-eye 3D display, which is characterized in that it includes a substrate, a plano-convex lens grating array, a concave-convex lens grating array and a filling layer; The concave surface of the concave-convex lens grating array fits with the convex surface of the plano-convex lens grating array; the inner side of the filling layer covers the convex surface of the concave-convex lens grating array, and the outer side remains flat; the plano-convex lens grating array and the concave-convex lens grating array The refractive index is different, and the refractive index 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. The utility model has the effects of reducing the size of the red, green and blue diffuse spots, reducing the defocus size, increasing the intensity of the central light spot, reducing the degree of crosstalk and improving the lateral and axial resolution.

Description

A double-glued microcylindrical lens grating device for naked-eye 3D display

technical field

The utility model relates to a double-glued micro-column lens grating device for naked-eye 3D display.

Background technique

With the advancement of digital image processing technology and equipment manufacturing level, 3D display has become a popular trend in the display industry. The lenticular lens grating LCD screen is a kind of naked-eye 3D display, but it has the disadvantages of high crosstalk, few viewpoints, and the definition needs to be improved. The principle of the lens array is to use the spectroscopic principle of the cylindrical lens grating unit to refract the light of two parallax images at different positions on the focal plane to two different directions, so that the left and right eyes of the viewer see two different images respectively, resulting in a sense of parallax , which are fused in the brain through optic nerve conduction to generate a stereoscopic image. This type of naked-eye 3D display technology has low cost, simple manufacturing process, and can realize 2D/3D switching, and is welcomed by the market. At present, the divergence direction of ordinary cylindrical lens units will be modulated by the curved surface lens when the light passes through the curved surface lens. The chromatic aberration of green and blue lights reduces the resolution in the direction of the vertical cylindrical lens cylinder.

Contents of the invention

In view of this, the purpose of this utility model is to provide a double-glued micro-pillar lens grating device for naked-eye 3D display, which can reduce the size of red, green and blue diffuse spots, reduce the defocus size, increase the central spot intensity, reduce crosstalk and The effect of improving the lateral (that is, the direction perpendicular to the cylindrical lens cylinder) and axial resolution.

In order to achieve the above object, the utility model adopts the following technical solutions: a double-glued microcylindrical lens grating device for naked-eye 3D display, which is characterized in that it includes a substrate, a plano-convex lens grating array, a concave-convex lens grating array, and a filling layer; The convex lens grating array is arranged on the upper surface of the substrate, and the concave surface of the concave-convex lens grating array fits with the convex surface of the plano-convex lens grating array; the inner side of the filling layer covers the convex surface of the concave-convex lens grating array, and the outer side remains flat; The refractive index of the convex lens grating array and the concave-convex lens grating array are different, and the refractive index 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.

Further, the plano-convex lens grating array is a converging positive lens.

Further, the meniscus lens grating array is a divergent negative lens.

Further, the material of the plano-convex lens grating array, the concave-convex lens grating array and the filling layer is ultraviolet curable liquid glue.

Further, the ultraviolet curable liquid glue includes silicone rubber, acrylic resin, unsaturated polyester, polyurethane, and epoxy resin.

Compared with the prior art, the utility model has the following beneficial effects: On the one hand, the refractive index n1 of the plano-convex lens grating array adopted by the utility model is different from the refractive index n2 of the concave-convex lens grating array, and the radius of curvature is different, which can correct spherical aberration and chromatic aberration , forming smaller red, green and blue diffuse spots, effectively improving the resolution of the cylindrical lens in the lateral and axial directions; The refractive index n3 forms the complete structure of the double-glued micro-cylindrical lens grating device; finally, the outermost transparent film filling material of the grating can effectively prevent the damage of the double-glued micro-cylindrical lens grating device. The utility model prepares a standard mold and a film pressing process at the same time, can produce a large-area double-glued micro-column lens grating device, can save production costs, and expand production; compared with the existing common micro-column lens grating technology, the present invention overcomes the common Inherent defects of micro-cylindrical lens gratings, improved flatness, integrated production efficiency, long service life, significantly enhanced light focusing properties, and improved comprehensive 3D display effects.

Description of drawings

Fig. 1 is a schematic structural view of an embodiment of the utility model.

Fig. 2 is a schematic diagram of partial dimensions of the concave-convex lens grating array of the present invention.

Fig. 3 is a schematic diagram of light modulation of a common grating.

Fig. 4 is a schematic diagram of light modulation in the present invention.

Fig. 5 is a schematic diagram of the preparation process of the present invention.

In the figure: 1 - substrate; 2 - plano-convex lens grating array; 3 - concave-convex lens grating array; 4 - filling layer; 5 - first mold; 6 - second mold; 7 - third mold.

detailed description

Below in conjunction with accompanying drawing and embodiment the utility model is described further.

Please refer to FIG. 1. This embodiment provides a double-glued microcylindrical lens grating device for naked-eye 3D display, which is characterized in that: it includes 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 The grating array is arranged on the upper surface of the substrate, and the concave surface of the concave-convex lens grating array fits with the convex surface of the plano-convex lens grating array; the inner side of the filling layer covers the convex surface of the concave-convex lens grating array, and the outer side remains flat; the plano-convex lens The refractive index n1 of the grating array is different from the refractive index n2 of the concave-convex lens grating array, and n1<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, which ensures the effect of the grating .

In this embodiment, the plano-convex lens grating array is a converging positive lens; the concave-convex lens grating array is a diverging negative lens. Please refer to FIG. 2 for a partial schematic diagram of the meniscus grating array. The thickness h1 of the middle part 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 curable liquid glue; including silicone rubber, acrylic resin, unsaturated polyester, polyurethane, and epoxy resin. Preferably, the materials of the plano-convex lens grating array, the meniscus lens grating array and the filling layer in this embodiment are light-transmitting materials such as polymethyl methacrylate (PMMA) or polyethylene terephthalate (PET). The substrate is made of light-transmitting materials such as glass, polymethyl methacrylate (PMMA) or polyethylene terephthalate (PET).

Fig. 3 is a schematic diagram of light modulation of a common grating in the prior art. The light modulation of a common grating through a plano-convex lens makes the red light (R) defocus (the distance from the intersection point to the screen) too large; and Fig. 4 is the light of the present invention Schematic diagram of modulation, through the modulation of plano-convex lens and concave-convex lens, red light (R), green light (G), blue (B) is modulated into green light (G), red light (R), blue (B) order; and realize that the red, green, and blue lights have the same focal length in the horizontal and vertical spaces to eliminate light dispersion.

Please refer to Fig. 5, in order to allow those of ordinary skill to better understand the technical solution of the utility model, the preparation process of the utility model is further introduced below, including the following steps:

Step S1: Coating the first layer of transparent UV-curable liquid glue on the substrate, using the first mold 5 to etch the UV-curable liquid glue into a plano-convex lens grating array through nanoimprint technology and performing curing treatment; remove the first layer In the mould, a layer of transparent film, that is, a plano-convex lens grating array is formed on the substrate; the embossing surface of the first mold is a concave surface matching the convex surface of the plano-convex lens grating array. In this step, the refractive index of the cured UV-curable liquid adhesive is basically the same as that of the substrate material.

Step S2: Coating a second layer of transparent UV-curable liquid glue on the plano-convex lens grating array, using the second mold 6 to etch the UV-curable liquid glue into a concave-convex lens grating array and curing Take off the second mold, and form a layer of transparent film on the plano-convex lens grating array, that is, the concave-convex lens grating array; the embossing surface of the second mold is a concave surface that matches the convex surface of the concave-convex lens grating array. In this step, the cured refractive index of the ultraviolet curable liquid glue is inconsistent with that of the plano-convex lens grating array.

Step S3: Coating a third layer of transparent UV-curable liquid glue on the concave-convex lens grating array, using the third mold 7 to etch the UV-curable liquid glue into a filling layer through nanoimprint technology and performing curing treatment; Go to the third mold, and form a layer of transparent film and filling layer on the concave-convex lens grating array. The filling layer fills up the convex surface of the meniscus lens grating array. The embossing surface of the third mold is plane.

In this embodiment, the curing treatment is irradiation treatment using cold ultraviolet light equipment.

The above descriptions are only preferred embodiments of the present utility model, and all equivalent changes and modifications made according to the patent scope of the present utility model shall fall within the scope of the present utility model.

Claims (5)

1. A double-glued microcolumn lens grating device for naked-eye 3D display, characterized in that: comprise 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 substrate upper surface, and the The concave surface of the concave-convex lens grating array fits with the convex surface of the plano-convex lens grating array; the inner side of the filling layer covers the convex surface of the concave-convex lens grating array, and the outer side remains flat; the refractive index of the plano-convex lens grating array and the concave-convex lens grating array different, and the refractive index of the filling layer is smaller than the combined effective refractive index of the plano-convex lens grating array and the concave-convex lens grating array. 2 . The double-cemented microcylindrical lens grating device for naked-eye 3D display according to claim 1 , wherein the plano-convex lens grating array is a converging positive lens. 3 . The double-cemented microcylindrical lens grating device for naked-eye 3D display according to claim 1 , wherein the concave-convex lens grating array is a divergent negative lens. 4 . 4. The double-glued microcylindrical lens grating device for naked-eye 3D display according to claim 1, characterized in that: the material of the plano-convex lens grating array, the concave-convex lens grating array and the filling layer is ultraviolet curable liquid glue. 5. The double-glued microcolumn lens grating device for naked-eye 3D display according to claim 4, characterized in that: said ultraviolet curing liquid glue comprises silicone rubber, acrylic resin, unsaturated polyester, polyurethane, epoxy resin .