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Lighting device

A technology for lighting devices and optical boards, which is applied to lighting devices, lighting device parts, lighting and heating equipment, etc., can solve problems such as visual fatigue and operational errors

Inactive Publication Date: 2013-03-20
HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In practical applications, such as writing with a pen or performing surgery, ghosting often causes visual fatigue or operational errors

Method used

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Examples

Experimental program
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Embodiment Construction

[0015] The lighting device of the present invention will be further described in detail below in conjunction with the drawings and embodiments.

[0016] See figure 2 , the lighting device 200 of Embodiment 1 of the present invention includes a light box 22 , a plurality of light emitting diodes 24 , a first optical plate 26 and a second optical plate 28 . A plurality of light emitting diodes 24 are disposed on the bottom plate of the light box 22 . The first optical plate 26 and the second optical plate 28 are disposed in the light box 22 and arranged above the plurality of LEDs 24 at intervals in sequence, and the second optical plate 28 covers the opening of the light box 22 . The first optical plate 26 is spaced from the plurality of LEDs 24 to form a first diffusion space 31 , and the second optical plate 28 is spaced from the first optical plate 26 to form a second diffusion space 32 .

[0017] The light box 22 may be made of metal or plastic with high reflectivity, or...

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Abstract

A lighting device comprises a lamphouse and a plurality of light-emitting diodes (LEDs) which are arranged on a baseplate of the lamphouse. The lighting device also comprises a first optical plate arranged above the LEDs. The first optical plate comprises a light incoming surface, a light exiting surface opposite to the light incoming surface and a plurality of long strip cylindrical bulges which are formed on the light exiting surface and are mutually parallel. The emergent rays of the lighting device have better uniformity, thus weakening ghosting.

Description

technical field [0001] The invention relates to an illuminating device, in particular to an illuminating device using a light emitting diode as a light source. Background technique [0002] Light-emitting diodes (LEDs) have the advantages of no mercury, high luminous efficiency, and long service life. With the maturity of LED technology, lighting devices using LEDs as light sources have been launched one after another. At present, LED lighting devices have been used in many fields such as municipal lighting, residential lighting, communication equipment, medical equipment, and industrial equipment. [0003] See figure 1 , a lighting device 100 using LED as a light source includes a light box (not shown in the figure) and a plurality of light emitting diodes 12 arranged on the bottom plate 11 of the light box. When in use, multiple lights emitted from the LEDs 12 strike the object 14 at different angles, causing the object 14 to leave multiple shadows (not shown) on the de...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B5/02G02F1/1335F21V5/08F21Y105/00F21Y101/02
Inventor 章绍汉
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD