Invention Grant
- Patent Title: Lighting device having a light blocking mechanism
- Patent Title (中): 具有遮光机构的照明装置
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Application No.: US10612933Application Date: 2003-07-07
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Publication No.: US07033046B2Publication Date: 2006-04-25
- Inventor: Kazuhiro Ando , Yoshikazu Inoue , Motoya Sano , Hiroshi Fukano , Wataru Nara , Akira Ota
- Applicant: Kazuhiro Ando , Yoshikazu Inoue , Motoya Sano , Hiroshi Fukano , Wataru Nara , Akira Ota
- Applicant Address: JP Tokyo
- Assignee: Ricoh Company, Ltd.
- Current Assignee: Ricoh Company, Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, P.C.
- Priority: JP2002-201747 20020710
- Main IPC: F21V13/10
- IPC: F21V13/10

Abstract:
A lighting device includes a light source that illuminates an object of illumination, a reflecting member provided opposite the light source so as to direct a first part of illuminating light emitted therefrom to the object of illumination, and a light-blocking member provided between the light source and the object of illumination and between the reflecting member and the object of illumination. The light-blocking member blocks the first directed part of the illuminating light and a second part of the illuminating light directly illuminating the object of illumination with a certain ratio of a light-blocking rate for the first directed part of the illuminating light to a light-blocking rate for the second directly illuminating part of the illuminating light.
Public/Granted literature
- US20040070978A1 Lighting device and image sensor using the same Public/Granted day:2004-04-15
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