Laser engraved linear array light guide plate and preparation method thereof

Abstract

The invention discloses a laser engraved linear array light guide plate. The light guide plate made of an acryl flat plate comprises a reflecting layer, a light guide layer and a diffusing layer, wherein the reflecting layer is made of light reflecting materials with high reflectivity; the light guide layer is made of materials with high light transmittance; and the diffusing layer is made of light homogenizing materials. The laser engraved linear array light guide plate is characterized in that a plurality of linear arrays comprising light reflection diffusing lines engraved by a laser pulse are respectively distributed in the horizontal direction and the longitudinal direction on the light guide layer of the light guide plate, wherein the diffusing lines among the linear arrays of vertical light rays are parallel with each other and form arithmetic progression arrangement, and the linear arrays at a position of the light guide plate nearer a light source are sparser, and vice versa according to the practical requirements; and the diffusing lines among the linear arrays of parallel light rays are parallel with each other and form an equal distance. In addition, the invention also discloses a preparation method of the light guide plate. The light guide plate adopting the technical method has more even light emission and better effect.

Description

Technical field: [0001] The invention relates to a light guide material used in lighting equipment, in particular to a laser engraved linear array light guide plate and a preparation method thereof. Background technique: [0002] The existing light guide plate and its preparation technology are classified as follows: [0003] (1) Printing type: [0004] Preparation method: After the shape processing of the acrylic sheet is completed, the light guide dots are printed on the surface by screen printing, and the direction of the light entering from the side is changed into a flat light. [0005] Advantages: The production process is simple and easy to master, the investment is small, and the production cost is low. [0006] Disadvantages: different sizes require different stencils, the stencil must be successful once, otherwise it will be scrapped, and the refraction effect on light is worse than that of non-printing, that is, the brightness is low; chemical ink is greatly aff...

AI Technical Summary

Problems solved by technology

[0006] Disadvantages: different sizes require different stencils, the stencil must be successful once, otherwise it will be scrapped, and the refraction effect on light is worse than that of non-printing, that is, the brightness is low; chemical ink is greatly affected by the environment, easy to age and turn yellow ; All manual operation, poor stability and uniformity

[0010] Disadvantages: the mold cost is large, different sizes of products need different molds, the cost of plastic molds is high, the size parameters of the dots cannot be modified after the mold is finalized, the mold must be successfully opened once, otherwise it will be scrapped, and the production process is difficult to master. Produce large light guide plates, this method is mainly for small liquid crystal display backlight products

[0014] Disadvantages: equipment research and development investment costs are relatively large

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