Raindrop sensor

Details Raindrop sensor Raindrop sensor

2007-06-12

2007-06-12

Lee, John R. (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

C250S227250

Reexamination Certificate

active

11600889

ABSTRACT:
A raindrop sensor for sensing water attached to a second surface of a transparent body includes a light emitting element, a light guide body, a light receiving element, and an abnormality determining device. The light emitting element is provided in a first surface side of the transparent body for emitting light toward the transparent body. The light guide body is mounted on a first surface of the transparent body for guiding the light. The light receiving element is provided in first surface side of the transparent body for receiving the reflected light, which is reflected by the second surface of the transparent body. The light receiving element outputs a signal based on an amount of the reflected light received. The abnormality determining device determines an abnormality of the light guide body by comparing a value indicated by the signal with an index value.

REFERENCES:
patent: 4588935 (1986-05-01), Kaneiwa et al.
patent: 4701613 (1987-10-01), Watanabe et al.
patent: 5661303 (1997-08-01), Teder
patent: 5861758 (1999-01-01), Berberich
patent: 5898183 (1999-04-01), Teder
patent: 6331819 (2001-12-01), Hog
patent: 6507015 (2003-01-01), Maeno et al.
patent: 6686603 (2004-02-01), Ishikawa
patent: 6765631 (2004-07-01), Ishikawa et al.
patent: 2006/0076524 (2006-04-01), Yoshigoe et al.
patent: 2007/0034785 (2007-02-01), Yoshigoe et al.

Affiliated with

Also associated with

Rating

Raindrop sensor does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Raindrop sensor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Raindrop sensor will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3832591