Photoelectric sensor with droplet resistant face

Details Photoelectric sensor with droplet resistant face Photoelectric sensor with droplet resistant face

1992-02-27

1993-04-06

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

250239, H01J 516

Patent

active

052006077

ABSTRACT:
A photodetector is provided with a housing that has a discontinuity formed in an outer surface of its light transmissive portion. The discontinuity serves to inhibit liquid droplets from adhering to the outer surface of the endface in the region where the discontinuity is located. Alternative embodiments of the present invention include discontinuities formed in the outer surfaces of housing windows which have flat inner surfaces or inner surfaces which are shaped to formed lenses. By preventing liquid droplets from adhering to the outer surface of the window, the present invention prevents the reflective liquid surfaces of droplets from creating false signals for the photodetector by reflecting light back from the light source toward a light sensitive component.

REFERENCES:
patent: 4792699 (1988-12-01), Duncan
patent: 5115129 (1992-05-01), Johnson

Affiliated with

Also associated with

Rating

Photoelectric sensor with droplet resistant face does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-538529