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Plane illumination light source adjustable in brightness of two sides

A technology of lighting light source and surface light source, applied in the field of lighting, can solve the problem that the brightness of the front and back of the light source cannot be adjusted, and achieve the effect of switching between transparent and opaque

Inactive Publication Date: 2016-04-20
GUAN YEOLIGHT TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The existing LED surface light source is realized by using a surrounding LED light source frame and a light guide plate, and the brightness of the front and back sides of the light source cannot be adjusted

Method used

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  • Plane illumination light source adjustable in brightness of two sides
  • Plane illumination light source adjustable in brightness of two sides
  • Plane illumination light source adjustable in brightness of two sides

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Embodiment Construction

[0028] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0029] The invention provides a plane lighting source with adjustable brightness on both sides, comprising a plane light source, an optical switch film and a control circuit for controlling the light transmittance of the light switch film are arranged on the plane light source, and the light switch film is covered on the surface of the plane light source. on at least one light-emitting surface.

[0030] Such as figure 1 , figure 2 As shown, the surface light source includes a light guide plate 1 and an LED light source 3, and the LED light source 3 is distributed on at least one side of the periphery of the light guide plate 2, and forms incident light on the side; wherein figure 1 It is shown that the LED light source 3 is distribu...

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PUM

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Abstract

The invention discloses a plane illumination light source adjustable in brightness of two sides. The plane illumination light source comprises an area light source; the area light source is provided with one or more photoswitch membranes and a control circuit used for controlling light transmittance of the one or more photoswitch membranes; the one or more photoswitch membranes cover at least one light-emitting surface of the area light source. According to the plane illumination light source disclosed by the invention, the one or more photoswitch membranes [such as PDLC (polymer dispersed liquid crystal) membranes] are combined with two light-emitting surfaces or one of the two light-emitting surfaces of the area light source, so that light output intensity of the front side and the back side of the area light source can be effectively adjusted; the light output intensity and a light distribution range can be adjusted as needed; the plane illumination light source has the advantage that light distribution can be adjusted.

Description

technical field [0001] The invention relates to the technical field of lighting, in particular to a plane lighting source with adjustable brightness on both sides. Background technique [0002] The existing LED surface light source is realized by using the surrounding LED light source frame and the light guide plate, and the brightness of the front and back sides of the light source cannot be adjusted. However, lamps such as desk lamps or chandeliers often require different light distributions in different usage situations. For example, desk lamps, when reading and using, hope that more light is distributed on the desktop. Instead of reading, as indoor lighting, it is hoped that the light will have a wider distribution range. Therefore, it is desirable to make certain adjustments to the light distribution of the lamp. Common lamps use, for example, a mechanical adjustment device to adjust the direction of light emission by adjusting the direction of the lamp or lampshade....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F21S2/00F21V23/04F21V33/00F21Y101/02
CPCY02B20/30
Inventor 段炼张国辉董艳波王静吴海燕胡永岚
Owner GUAN YEOLIGHT TECH CO LTD
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