Method and apparatus for detecting movement of an electro-optica

Details Method and apparatus for detecting movement of an electro-optica Method and apparatus for detecting movement of an electro-optica

1991-10-03

1993-07-06

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

128667, 356 41, H01J 516

Patent

active

052256723

ABSTRACT:
An apparatus for photo-optically detecting transducer motion using a photodetector resiliently suspended inside the transducer housing and photo-optically coupled to a light source. During movement the inertia effect of the photodetector along with the resilient suspension system causes the changes in the photo-optical coupling between the photodetector and the light source. The inertia effect of the photodetector is enhanced by adding a mass to the photodetector. Either the magnitude or the phase of the photodetector output is monitored to detect movement. In another embodiment, a light emitter is resiliently suspended so that movement induced changes in the position of the light emitter alter the coupling of light to one or more light detectors.

REFERENCES:
patent: 3825342 (1974-07-01), Lubbers et al.
patent: 3970394 (1976-07-01), Stanton
patent: 4494550 (1985-01-01), Blazek et al.
patent: 4854699 (1989-08-01), Edgar, Jr.
patent: 4872348 (1989-10-01), Curry
patent: 5055671 (1991-10-01), Jones

Affiliated with

Also associated with

Rating

Method and apparatus for detecting movement of an electro-optica does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for detecting movement of an electro-optica, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for detecting movement of an electro-optica will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1691923