Radiant energy – Photocells; circuits and apparatus – Photocell controlled circuit
Reexamination Certificate
2008-03-04
2008-03-04
Epps, Georgia (Department: 2878)
Radiant energy
Photocells; circuits and apparatus
Photocell controlled circuit
C250S216000, C250S234000, C358S471000, C358S473000, C382S162000, C382S312000
Reexamination Certificate
active
11263782
ABSTRACT:
A first light source is adapted to illuminate a first object with first light. A first sensor includes a first light receiving element adapted to detect the first light by way of the first object. A second sensor includes a second light receiving element adapted to detect a second light which is externally inputted by way of a second object. A transparent member is disposed on at least one of a first optical path extending from the first object to the first sensor through a first lens and a second optical path extending from the second object to the second sensor through a second lens.
REFERENCES:
patent: 6643038 (2003-11-01), Kawahara et al.
patent: 2002/0048055 (2002-04-01), Yushiya
patent: 2006/0077475 (2006-04-01), Ta Su
patent: 2004-126284 (2004-04-01), None
Edwards Angell Palmer & & Dodge LLP
Epps Georgia
Penny, Jr. John J.
Seiko Epson Corporation
Williams Don
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