Title:
Lighting device
Document Type and Number:
Japanese Patent JP6305090
Kind Code:
B2
Abstract:
An illumination apparatus includes a light source, a light-receiving unit, and a light guide unit formed in an arc shape. The light guide unit includes a light incidence section on which light from the light source is incident. The light incidence section is disposed on an outer circumferential side of the light guide unit, and faces the light source. The light guide unit further includes a first reflecting section having a first and a second region, and a second reflecting section having first and second surfaces. The first surface reflects the light incident from the light incidence section toward the first region, and the second surface reflects the light incident from the light incidence section toward the second region. The light-receiving unit is disposed at a position between the first and the second surfaces.
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Inventors:
Toshiki Miyakawa
Ryoji Tenmei
Ryoji Tenmei
Application Number:
JP2014023827A
Publication Date:
April 04, 2018
Filing Date:
February 10, 2014
Export Citation:
Assignee:
Canon Inc
International Classes:
G03B15/05; F21S10/06; F21V7/00; F21V17/00; G03B15/02; H04N5/225
Domestic Patent References:
| JP2004134223A | ||||
| JP2008261717A | ||||
| JP2001255574A | ||||
| JP2005195772A | ||||
| JP2014142557A |
Foreign References:
| US20060039692 | ||||
| US20100315816 |
Attorney, Agent or Firm:
Takuma Abe
Sogo Kuroiwa
Sogo Kuroiwa
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