CN215769086U

CN215769086U - Anti-interference collimation light splitting film for display

Info

Publication number: CN215769086U
Application number: CN202121710616.XU
Authority: CN
Inventors: 宁召; 楼鑫; 何志兴; 金小平; 何海君
Original assignee: Jiangsu Hongde Photoelectric Material Technology Co ltd
Current assignee: Jiangsu Hongde Photoelectric Material Technology Co ltd
Priority date: 2021-07-26
Filing date: 2021-07-26
Publication date: 2022-02-08
Anticipated expiration: 2031-07-26

Abstract

The utility model discloses an anti-interference collimation light splitting film for a display, which comprises a substrate layer, wherein a micro-lens array is arranged on one side of the substrate layer, and the anti-interference collimation light splitting film is characterized in that: the opposite side of substrate layer sets up arc prism array, arc prism array sets up two sets ofly, and two sets of arc prism array sets up alternately, and the crossing angle is not more than 90 degrees. Light rays pass through the light incidence surface, pass through the concave prism and the substrate layer on the two groups of arc prism array group layers, and are finally emitted out by the micro lens, so that light splitting can be achieved, the collimation effect of incident light rays is improved, molar interference is reduced, and the universality of products is improved.

Description

Anti-interference collimation light splitting film for display

Technical Field

The utility model relates to the field of display equipment, in particular to an anti-interference collimation light splitting film for a display.

Background

Along with the continuous change of display technology, the display effect of the existing display device is also continuously optimized, the service life of the existing LED lamp is long, the energy consumption is low, the LED lamp is widely applied in daily life, but the lamp beads in the LED lamp are often arranged at a certain interval, a certain light and shade interval phenomenon can be caused, the emitted light is often dazzling, the integral light homogenization effect is poor, and in order to better adapt to the display requirement of the MINILED, the light homogenizing film or the light splitting film can better realize the light homogenizing effect with high light transmittance and high collimation performance.

However, the brightness enhancement film, the light homogenizing film or the light splitting film inside the existing display is generally formed by laminating a unidirectional prism film, a micro lens or a plurality of unidirectional prism films with a certain included angle between an upper layer and a lower layer, so that a good light gathering effect is realized, but the mode has a limited light homogenizing effect and collimating effect on incident light, and a molar interference phenomenon is easily formed.

The inventors of the present invention, therefore, have aimed at the above technical problem to invent an anti-interference collimating beam splitting film for a display.

SUMMERY OF THE UTILITY MODEL

To overcome the above disadvantages, it is an object of the present invention to provide an anti-interference collimating beam splitting film for a display.

In order to achieve the above purposes, the utility model adopts the technical scheme that: the utility model provides an anti-interference collimation beam splitting membrane for display, includes the substrate layer, one side of substrate layer sets up the microlens array, the opposite side of substrate layer sets up arc prism array, arc prism array sets up two sets ofly, and two sets of arc prism array sets up alternately, and the crossing angle is not more than 90 degrees.

Preferably, the substrate layer is transparent substrate, and transparent substrate is in PET or PC, and thickness is 25-300 um. PET is thermoplastic polyester, which is totally called polyethylene terephthalate, and PC is polyester plate, in particular to a plate material taking polycarbonate as a main component.

Preferably, the micro lens array is provided with a plurality of micro lenses in parallel, and each group of the arc prism array is provided with a plurality of arc prisms in parallel. I.e. the array described above refers to a parallel array.

Preferably, the surfaces and the tops of the arc prisms of the arc prism array are curved surfaces with radian, and the curvature is 0-2 x 10⁵m^-1And simultaneously, the arc-shaped prisms are symmetrical left and right. Namely, the bilateral symmetry arrangement ensures that the concave prisms with four cambered surfaces are uniform in size when two groups of arc prism arrays are crossed, the functions of splitting light, improving collimation effect and reducing molar interference are achieved, and the best curvature is 0-3 multiplied by 10⁴m^-1。

Preferably, the distance between adjacent arc prisms of the two sets of arc prism arrays is equal and between 10um and 100 um. Namely, the dimensional stability of the concave prisms formed by the two groups of crossed prisms is ensured.

The distance between adjacent arc-shaped prisms is 70um, and the crossing angle is 90 degrees.

Preferably, the height of the arc-shaped top of the arc-shaped prisms of the arc-shaped prism array is 1/4-2/3 of the distance between the bottoms of the arc-shaped prisms. And the sizes of the arc prisms of the two groups of arc prism arrays are the same.

Preferably, the edges of the microlenses of the microlens array are circular or regular polygonal, and the diameters of the microlenses are 5um to 150 um. Preferably, regular hexagon can guarantee when array sets up each other, can closely arrange, guarantees stably.

Preferably, the central main optical axis of each microlens in the microlens array is coaxial with the vertex of each concave prism formed by the arc-shaped prism array. That is, the micro-lenses and the arc prism arrays are distributed in a staggered manner, so that the width of the micro-lenses and the width of the arc prism arrays are the same, and when the micro-lenses and the arc prism arrays are distributed, the micro-lenses and the arc prism arrays are staggered along half of the width, so that the coaxial purpose can be realized.

Preferably, the refractive index of the microlens array and the arc prism array is 1.48-1.64.

The anti-interference collimation light splitting film for the display has the advantages that light rays pass through the light incident surface, pass through the concave prisms and the substrate layer of the two arc prism array layers and are finally emitted out by the micro lens, light splitting can be achieved, the collimation effect of the incident light rays is improved, molar interference is reduced, and the universality of products is improved.

Drawings

FIG. 1 is a schematic diagram of an anti-interference collimating beam splitting film for a display.

Fig. 2 is a side view of fig. 1.

FIG. 3 is a schematic diagram of a concave prism structure with four faces sharing a common vertex arc.

In the figure:

1. substrate layer, 2, microlens array, 3, arc prism array.

Detailed Description

The following detailed description of the preferred embodiments of the present invention, taken in conjunction with the accompanying drawings, will make the advantages and features of the utility model easier to understand by those skilled in the art, and thus will clearly and clearly define the scope of the utility model.

Referring to fig. 1-3, an anti-interference collimation light splitting film for a display in this embodiment includes a substrate layer 1, a microlens array 2 is disposed on one side of the substrate layer 1, an arc prism array 3 is disposed on the other side of the substrate layer 1, the arc prism arrays 3 are disposed in two groups, and the two groups of arc prism arrays 3 are disposed in a crossed manner, and a crossing angle is not greater than 90 degrees.

The substrate layer 1 is a transparent substrate, the transparent substrate is one of PET or PC, and the thickness is 25-300 um. PET is thermoplastic polyester, which is totally called polyethylene terephthalate, and PC is polyester plate, in particular to a plate material taking polycarbonate as a main component.

The micro lens array 2 is provided with a plurality of micro lenses in parallel, and each group of arc prism array 3 is provided with a plurality of arc prisms in parallel. I.e. the array described above refers to a parallel array.

The surfaces and the tops of the arc prisms of the arc prism array 3 are provided with radiansAnd the curvature is 0-2 x 10⁵m^-1And simultaneously, the arc-shaped prisms are symmetrical left and right. Namely, the bilateral symmetry arrangement ensures that the concave prisms with four cambered surfaces are uniform in size when two groups of arc prism arrays 3 are crossed, the functions of splitting light, improving collimation effect and reducing molar interference are achieved, and the best curvature is 0-3 multiplied by 10⁴m^-1。

The distance between the adjacent arc prisms of the two sets of arc prism arrays 3 is equal and between 10um-100 um. Namely, the dimensional stability of the concave prisms formed by the two groups of crossed prisms is ensured.

The height of the arc top of the arc prism array 3 is 1/4-2/3 of the distance between the bottoms of the arc prisms. And the sizes of the arc prisms of the two groups of arc prism arrays 3 are the same.

The edges of the microlenses of the microlens array 2 are circular or regular polygonal, and the diameters of the microlenses are 5um to 150 um. Preferably, regular hexagon can guarantee when array sets up each other, can closely arrange, guarantees stably.

The central main optical axis of the micro-lenses in the micro-lens array 2 is coaxial with the vertex of the concave prism formed by the arc prism array 3. That is, the micro lenses and the arc prism array 3 are distributed in a staggered manner, so that the width of the micro lenses and the width of the arc prism array are the same, and when the micro lenses and the arc prism array are distributed, the micro lenses and the arc prism array are staggered along half of the width, so that the coaxial purpose can be realized.

The refractive index of the micro lens array 2 and the arc prism array 3 is 1.48-1.64.

The utility model provides an anti-interference collimation beam splitting membrane for display's beneficial effect is that, light is through going into the plain noodles, through concave type prism and the substrate layer 1 on 3 groups of layers on two sets of arc prism array again, jets out by the microlens at last, can play the beam split, promotes incident light's collimation effect, reduces the mole and interferes, improves the commonality of product.

Examples

The transparent substrate selects PC with thickness of 125um, the upper part of the transparent substrate is a micro-lens array 2, the lower part of the transparent substrate is an arc prism array 3 and is microThe diameter of the lens is a hemisphere of 70um, the interval between the two sets of arc prism arrays 3 is 70um, the crossing angle alpha is 90 degrees, and the height of the arc top of the arc prism array 3 is 1/2 of the bottom interval of the arc prism, and the curvature of the arc prism is 0-3 x 10⁴m^-1Referring to fig. 1, the length of the bottom of the arc-shaped prism is about 70um, that is, when the arc-shaped prisms are vertically arranged, the arc-shaped prisms are arranged in a staggered manner, the phase difference is 35um, and the vertex of the concave prism formed by the two groups of arc-shaped prisms and the central main optical axis of the micro lens are ensured to be coaxial.

The comparative example is a two layer microlens and prism laminated film.

The films of examples and comparative examples were tested by attaching them to 55-inch optical screens to obtain collimation effect, molar interference and luminance averaging.

Through the comparison, the light splitting film of the embodiment has better light splitting and collimating effects and interference resisting effects than a comparison ratio.

The above embodiments are merely illustrative of the technical concept and features of the present invention, and the present invention is not limited thereto, and any equivalent changes or modifications made according to the spirit of the present invention should be included in the scope of the present invention.

Claims

1. The utility model provides an anti-interference collimation beam splitting membrane for display, includes the substrate layer, one side of substrate layer sets up microlens array, its characterized in that: the opposite side of substrate layer sets up arc prism array, arc prism array sets up two sets ofly, and two sets of arc prism array sets up alternately, and the crossing angle is not more than 90 degrees.

2. An anti-interference collimating beam splitting film for a display according to claim 1, wherein: the substrate layer is transparent substrate, and transparent substrate is in PET or PC, and thickness is 25-300 um.

3. An anti-interference collimating beam splitting film for a display according to claim 1, wherein: the micro-lens array is a plurality of micro-lenses which are arranged in parallel, and each group of the arc-shaped prism array is a plurality of arc-shaped prisms which are arranged in parallel.

4. An anti-interference collimating beam splitting film for a display according to claim 1, wherein: the surfaces and the tops of the arc prisms of the arc prism array are curved surfaces with radians, and the curvature is 0-2 multiplied by 10⁵m^-1And simultaneously, the arc-shaped prisms are symmetrical left and right.

5. An anti-interference collimating beam splitting film for a display according to claim 1, wherein: and the distances between the adjacent arc prisms of the two groups of arc prism arrays are equal and are between 10um and 100 um.

6. An anti-interference collimating beam splitting film for a display according to claim 1, wherein: the height of the arc top of the arc prism array is 1/4-2/3 of the distance between the bottoms of the arc prisms.

7. An anti-interference collimating beam splitting film for a display according to claim 1, wherein: the edge of the micro lens array is circular or regular polygon, and the diameter of the micro lens is 5um-150 um.

8. An anti-interference collimating beam splitting film for a display according to claim 1, wherein: the central main optical axis of each micro lens in the micro lens array is coaxial with the vertex of a concave prism formed by intersecting the arc prism array.

9. An anti-interference collimating beam splitting film for a display according to claim 1, wherein: the refractive index of the micro lens array and the arc prism array is 1.48-1.64.