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Patent Searching and Data


Title:
照明器具
Document Type and Number:
Japanese Patent JP4186724
Kind Code:
B2
Abstract:

To provide a lighting fixture for obtaining irradiation patterns with high evenness by reducing light which leaks out of the target irradiation patterns in a combination of a reflecting plate and a lens varying the irradiation patterns.

The fixture has a reflecting plate 1 with a light source 9 disposed therein and a lens 2 disposed at an opening of the plate 1. Many unevenness parts 13 are formed on the surface of the lens 2 in parallel to one another and formed so that angles formed by normals P of unevenness faces against incident light entering into the lens 2 by reflecting at the plate 1 from a light source 9 and a light axis Q of the plate 1 is large at the center of the lens 2 and becomes smaller toward the periphery from the center of the lens 2.

COPYRIGHT: (C)2005,JPO&NCIPI


Inventors:
Masato Miyamaru
Application Number:
JP2003178911A
Publication Date:
November 26, 2008
Filing Date:
June 24, 2003
Export Citation:
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Assignee:
MATSUSHITA ELECTRIC WORKS,LTD.
International Classes:
F21S2/00; F21V5/00; F21Y101/00
Domestic Patent References:
JP6273763A
JP2000030503A
JP62104308U
JP433201A
JP231005U
JP449405U
JP6339808U
Attorney, Agent or Firm:
Akio Miyai
Makoto Ito