Optical switch with collimating lenses, antifreeze and/or index

Details Optical switch with collimating lenses, antifreeze and/or index Optical switch with collimating lenses, antifreeze and/or index

1989-03-07

1990-06-19

Westin, Edward P.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

250221, 250577, H01J 4014

Patent

active

049356216

ABSTRACT:
Optical sensor has divergent light from a source, preferably from a single optical fiber, and a lens which collimates the light into a broad beam. The broad beam is acted upon and passes to another lens which focuses the beam onto a single optical fiber for detection. The beam is acted upon by reflecting off of a surface when the surface is dry or dissipating when the surface is wet, or is acted on in other ways to interrupt the beam to provide a water presence signal or the like.

REFERENCES:
patent: 3526775 (1970-09-01), Friedrich et al.
patent: 3906222 (1975-09-01), Astier et al.
patent: 4021119 (1977-05-01), Stauffer
patent: 4156149 (1979-05-01), Vaccari
patent: 4534651 (1985-08-01), Minikane
patent: 4607160 (1986-08-01), Sakakino

Affiliated with

Also associated with

Rating

Optical switch with collimating lenses, antifreeze and/or index does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Optical switch with collimating lenses, antifreeze and/or index , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical switch with collimating lenses, antifreeze and/or index will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2261965