F - Mech Eng,Light,Heat,Weapons – 21 – V
Patent
F - Mech Eng,Light,Heat,Weapons
21
V
F21V 5/04 (2006.01) F21V 3/00 (2006.01)
Patent
CA 2642548
A light distribution board used as an illuminating cover for a lamp set and having on a transparent board of it saw toothed light gratings, each saw toothed light grating is composed of a convex lens surface and a bevel plane lens surface the saw toothed light gratings are arranged at two lateral sides of a central line of the transparent board to form mirror images one side to the other side, the bevel plane lens surfaces are arranged to face respectively to two lateral sides of the transparent board, while the convex lens surfaces are arranged to face to the central line; the top surface is a light receiving surface of the lamp set. The bottom surface of the transparent board is formed thereon a plurality of convex-lens strip like light gratings and the bottom surface is an illuminating surface of the lamp set. With this structure, light beams can be uniformly distributed and can avoid the phenomenon of Gauss distribution that makes the area below the lamp especially bright, and avoid the phenomenon of dazzling of eyes during looking at the light emitting member in the lamp set, and the light beams become more tender under the condition that lose of brightness is minimum.
Marks & Clerk
Taiwan Network Computer & Electronic Co. Ltd.
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