Radiant energy – Photocells; circuits and apparatus – Housings
Reexamination Certificate
2007-12-18
2007-12-18
Le, Que Tan (Department: 2878)
Radiant energy
Photocells; circuits and apparatus
Housings
C250S214100, C200S314000, C200S317000
Reexamination Certificate
active
11378291
ABSTRACT:
The present invention allows illumination light of a light source which leaks out to a light receiving element to be reliably shielded and allows components to be assembled to be unitized into a compact body. A light-shielding cylindrical section31and a light-shielding plate32interposed between a light-receiving side light guide10and a light emitting side light guide11are formed on a frame body29of a push button2as a single piece. Illumination light which leaks out from a light emitting element6and the light emitting side light guide11to a light receiving element5is shielded by the light-shielding cylindrical section31and the light-shielding plate32. Support ribs35and a hook41for positioning a circuit substrate7are formed in the frame body29, whereby the light guides10, 11, light-shielding cylindrical section31and light-shielding plate32are unitized on the frame body29.
REFERENCES:
patent: 6878892 (2005-04-01), Miyako et al.
patent: 7002087 (2006-02-01), Miyako et al.
patent: 7026563 (2006-04-01), Miyako et al.
patent: 2005/0252754 (2005-11-01), Arnold
patent: 2002-110003 (2002-04-01), None
Bui-Pho Pascal M.
Le Que Tan
Orion Electric Co. Ltd.
Westerman, Hattori, Daniels & Adrian , LLP.
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