Title:
ILLUMINATION DEVICE
Document Type and Number:
Japanese Patent JP2010073611
Kind Code:
A
Abstract:
To provide an illumination device that is inexpensively configured, and capable of reducing the impact of outside light and capable of controlling an optical output to be constant.
A substantially circular device body is configured to rotate around the central part thereof, and a brightness detection means provided at an outer periphery is positioned, for example, at a side opposite to a window, thereby: making it possible to reduce the impact of outside light by inexpensive configuration; and controlling the optical output to be constant.
Inventors:
OTSUBO ATSUSHI
KANDA TAKASHI
KATO JUNICHI
MANNAMI HIROAKI
SAKASHITA YOSHIHIRO
NAGAOKA SHINICHI
HIROWATARI YUICHIRO
KANDA TAKASHI
KATO JUNICHI
MANNAMI HIROAKI
SAKASHITA YOSHIHIRO
NAGAOKA SHINICHI
HIROWATARI YUICHIRO
Application Number:
JP2008242213A
Publication Date:
April 02, 2010
Filing Date:
September 22, 2008
Export Citation:
Assignee:
PANASONIC ELEC WORKS CO LTD
International Classes:
F21S2/00; F21S8/04; F21V21/34; F21V23/00; F21Y103/02
Domestic Patent References:
| JPH11118599A | 1999-04-30 | |||
| JPH10334722A | 1998-12-18 | |||
| JP2007214096A | 2007-08-23 | |||
| JPH06151065A | 1994-05-31 |
Attorney, Agent or Firm:
Shohei Oguri
Toshimitsu Ichikawa
Kimihide Hashimoto
Toshimitsu Ichikawa
Kimihide Hashimoto
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