Light sensor for detecting brightness

Details Light sensor for detecting brightness Light sensor for detecting brightness

2008-12-03

2011-12-27

Epps, Georgia Y (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

C250S216000, C250S227250, C250S574000, C356S436000

Reexamination Certificate

active

08084758

ABSTRACT:
A light sensor for detecting brightness of an outside of a vehicle includes: a light shielding element on a windshield; a light guiding element in a through hole of the light shielding element; and a light receiving element that receives light from the outside of the vehicle via the light guiding element and the windshield. The light guiding element includes an entrance surface facing the windshield and an output surface facing the light receiving element. The entrance surface receives the light from the outside. The light guiding element transmits and outputs the light from the output surface toward the light receiving element. The entrance surface has a top disposed inside of the through hole.

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Japanese Office Action dated May 25, 2010, issued in corresponding Japanese Application No. 2007-322579, with English translation.

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