Title:
OPTICAL MEMBER AND LIGHT SOURCE DEVICE
Document Type and Number:
Japanese Patent JP2015082343
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a light source device capable of achieving obtainment of an outgoing beam with necessary and sufficient parallelism, even when a plane-emission light source is used as a luminous body.SOLUTION: A light source device comprises an optical member 20 having a light reflection surface 21 arranged in such a manner as to surround a light-emitting surface 11 of a plane-emission light source 10. The light reflection surface 21 is configured by combining a plurality of parabolic mirror parts 21a, 21b, 21c and 21d where reference points 12a, 12b, 12c and 12d set by areas 11a, 11b, 11c and 11d obtained by fractionating the light-emitting surface 11 are set as focal positions, respectively.
Inventors:
KUNII TSUNEKAZU
YOKOTA HIROYUKI
YOKOTA HIROYUKI
Application Number:
JP2013218054A
Publication Date:
April 27, 2015
Filing Date:
October 21, 2013
Export Citation:
Assignee:
KOWA SEIKO
TOKYO METRO IND TECH RES INST
TOKYO METRO IND TECH RES INST
International Classes:
F21S8/12
Domestic Patent References:
| JP2011146386A | 2011-07-28 | |||
| JP2008251556A | 2008-10-16 | |||
| JP2013182882A | 2013-09-12 | |||
| JP2012064491A | 2012-03-29 | |||
| JP2013008582A | 2013-01-10 | |||
| JP2010140745A | 2010-06-24 |
Attorney, Agent or Firm:
Aniya Setsuo
Toru Yui
Hitoshi Kiyono
Fukuoka Masahiro
Okuyama Tomohiro
Hideo Tachibana
Hashimura Kazumasa
Toru Yui
Hitoshi Kiyono
Fukuoka Masahiro
Okuyama Tomohiro
Hideo Tachibana
Hashimura Kazumasa
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