Concentric-circular-arc-curve-arrangement micro-lens array light-equalization plate and manufacturing method thereof

Abstract

The invention discloses a concentric-circular-arc-curve-arrangement micro-lens array light-equalization plate which comprises an Acrylic board. The lower surface of the Acrylic board is a light-reflection surface, the upper surface of the Acrylic board is a light-outgoing surface, and one side surface thereof is a light-incoming surface; a plurality of V-shaped grooves, in concentric circular arc curve arrangement, are engraved in the light-outgoing surface; the V-shaped grooves are distributed in concentric circular arc curves, which are not equal in space between thereof and which take the center point of an edge, where the light-outgoing surface and the light-incoming surface of the Acrylic board meet, as the circle center; and the V-shaped grooves extend from the light-incoming surface to a tail end surface of the Acrylic board. The invention also discloses a manufacturing method of the concentric-circular-arc-curve-arrangement micro-lens array light-equalization plate. The light-equalization plate has the advantages of being small in the number of LED light sources, being efficient and energy saving, being high in light guiding efficiency, being uniform in light outgoing and being high in brightness and the like. Micro cutting ensures dimension precision and shape precision of a micro-lens array of the light-equalization plate, so that the internal light path of the light-equalization plate is allowed to be strictly controllable; and the light-equalization plate is long in service life, high in light guiding efficiency, and uniform in light outgoing.

Description

technical field [0001] The invention relates to a side-light-incidence LED plane lamp uniform light plate, which belongs to the field of LED lighting design and precision photoelectric component manufacturing, in particular to a microlens array uniform light plate arranged in concentric arc curves and a manufacturing method thereof. Background technique [0002] LED is an all-solid cold light source, which has the advantages of high efficiency and energy saving, green environmental protection, long life, healthy light, eye protection, and high safety factor. According to the different ways of light incident, LED light guide plates are divided into direct type and side light type. The invention mainly relates to a design and a manufacturing method of a side-light-incident flat light uniform plate. The side-illuminated type places LEDs on the upper and lower sides of the backlight, and the adjustment of the layout greatly reduces the use of LEDs. The side-entry planar light ...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to reduce the number of LED light-emitting light sources in the LED flat lamp, reduce the overall size of the backlight module, and ensure the uniformity of the light output, so as to solve the problem of low manufacturing precision of the uniform light plate in the prior art, poor light guide stability, and poor light guide. Low light efficiency, low light uniformity, etc.

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