Integrating sphere device for measuring transmission of light in

Details Integrating sphere device for measuring transmission of light in Integrating sphere device for measuring transmission of light in

1985-10-04

1987-05-05

LaRoche, Eugene R.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

250228, 356236, 356338, 209576, H01J 4014

Patent

active

046635220

ABSTRACT:
The apparatus measures the transmission of light in successive falling objects. A beam is projected, wide enough to bathe all the facing surface of the object. An integrating sphere is on the other side of the object and its inlet and outlet apertures provide cut-offs so that only a hollow cone of flux scattered from the object is trapped in the integrating sphere, this flux being measured by a detector. The detector is connected to a micro-processor whose output is a measure of the clarity of the object. When the object is not in the beam, the beam falls on a detector so that the reduction in flux sensed by the detector is a measure of the projected area of the object. The micro-processor divides the signal from the detector by the reduction in flux, thereby making the output substantially independent of the size of the object.

REFERENCES:
patent: 3795310 (1974-03-01), Buchot et al.
patent: 3826364 (1974-07-01), Bonner et al.
patent: 4280625 (1981-07-01), Grobbelaar et al.

Affiliated with

Also associated with

Rating

Integrating sphere device for measuring transmission of light in does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Integrating sphere device for measuring transmission of light in, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Integrating sphere device for measuring transmission of light in will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2400641