Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Patent
1990-06-04
1991-10-22
Nelms, David C.
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
25022721, 356345, 324244, H01J 516, G01R 3302, G01B 902
Patent
active
050597833
ABSTRACT:
A proximity switch for use with a single optical source of energy. A passive fiber-optic magnetometer includes a Michelson type magnetometer in which one of the legs is sensitized to magnetic fields. A fiber-optic data link connects the magnetometer to the single optical source of energy and to a photo detector. A permanent magnet positioned adjacent the magnetometer causes constructive interference which is detected by the photo detector.
REFERENCES:
patent: 4356448 (1982-10-01), Brogardh et al.
patent: 4376248 (1983-03-01), Giallorenzi et al.
patent: 4433291 (1984-02-01), Yariv et al.
patent: 4450406 (1984-05-01), Bobb
patent: 4471219 (1984-09-01), Giallorenzi
patent: 4516073 (1985-05-01), Doriath et al.
patent: 4600885 (1986-07-01), Koo et al.
patent: 4627728 (1986-12-01), Willson
patent: 4767210 (1988-08-01), Kashyap
patent: 4789240 (1988-12-01), Bush
patent: 4796966 (1989-01-01), Kovaleski et al.
patent: 4800266 (1989-01-01), Poorman
patent: 4816669 (1989-03-01), Andersen
patent: 4881813 (1989-11-01), Koo et al.
patent: 4899042 (1990-02-01), Falk et al.
Anjan Yellapu
Stranjord Lee K.
Bruns Gregory A.
Honeywell Inc.
Messinger Michael
Nelms David C.
LandOfFree
Interferometric fiber optic proximity switch does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Interferometric fiber optic proximity switch, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Interferometric fiber optic proximity switch will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-110066