A light guide plate for a side-entry LED panel light
A technology of LED panel light and light guide plate, which is applied in the direction of light guide of lighting system, semiconductor device of light-emitting element, optics, etc. It can solve the problems of low light uniformity, dark area and bright edge, low light guide efficiency, etc. highly uniform effect
Active Publication Date: 2020-05-01
广东东华光电科技有限公司
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Problems solved by technology
However, due to the above-mentioned existing design, due to low light uniformity and low light guide efficiency, there will be dark areas and bright edges. Microscopic observation shows that the light uniformity and light output efficiency at each angle have not yet been optimized. , there is room for improvement
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[0016] The present invention will be further described below in conjunction with accompanying drawing:
[0017] Such as Figure 4 to Figure 6 A light guide plate of a side-entry LED panel light is shown, the light guide plate has a light incident surface 1, a light exit surface 2 and a light guide structure, the light incident surface 1 is arranged on the left and right sides of the light guide plate, the The light outlet surface 2 is arranged on the bottom surface of the light guide plate, and the light guide structure is arranged on the light outlet surface 2. The light guide structure includes a plurality of regular and continuous adjacent semicircle arcs 4, and adjacent semicircle arcs 4 pass through the small semicircle Arc body 5 is connected, the radius R of described semicircle arc body 4 is 0.16mm, the width L of semicircle arc body 4 is 0.4mm, the depth H of semicircle arc body 4 is 0.08mm, the radius of small semicircle arc body 5 r is 0.094mm.
[0018] The workin...
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Abstract
The invention provides a light guide plate of a lateral incidence type LED panel lamp. The light guide plate is characterized in that the light guide plate is provided with light incidence faces, a light emergence face and a light guide structure; the light incidence faces are arranged on the left side and the right side of the light guide plate; the light emergence face is arranged on the bottom face of the light guide plate; and the light guide structure is arranged on the light emergence face and comprises a plurality of regular continuously-adjacent semi-circular-arc bodies which are connected through small semi-circular-arc bodies, the radius R of each semi-circular-arc body is 0.16 mm, the width L of each semi-circular-arc body is 0.4 mm, the depth H of each semi-circular-arc body is 0.08 mm, and the radius r of each small semi-circular-arc body is 0.094 mm. The light uniformity and the light emergence efficiency of all angles of the light guide plate can be optimized, the light guide efficiency is improved to 85% from original 80%, and the light uniformity is improved to 90% from original 83%, so that the height of light energy guided out by the light guide plate is uniform, and a dark zone and a bright edge are avoided.
Description
technical field [0001] The invention relates to the technical field of decorative light guide plates, in particular to a light guide plate for side-entry LED panel lights. Background technique [0002] LED panel light is a high-end indoor lighting fixture. Its outer frame is made of aluminum alloy through anodic oxidation. The light source is LED. The feeling of beauty. The LED panel light has a unique design. The light passes through the light guide plate with high light transmittance to form a uniform plane luminous effect. The uniformity of illumination is good, the light is soft, comfortable and bright, which can effectively relieve eye fatigue. LED panel lights can also prevent radiation and will not irritate the skin of pregnant women, the elderly, and children. [0003] The light guide plate of the side-entry LED panel light changes the propagation direction of the light injected by the LED light source from the side, and transforms it into a uniform surface light s...
Claims
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IPC IPC(8): F21V8/00G02B6/00F21Y115/10
CPCF21V2200/20G02B6/0038
Inventor 樊静波
Owner 广东东华光电科技有限公司