Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Patent
1983-04-07
1986-09-02
Nelms, David C.
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
250227, G01D 534
Patent
active
046098178
ABSTRACT:
An optical sensor for determining the position of a rotating shaft, comprised of a first and second light deflecting means, a light sensing means, and a means for providing a source of light. The second means for deflecting light is mounted on the shaft and rotates as the shaft turns, deflecting light from an axial path parallel to the shaft to a second radial light path. The shaft extends through and turns relative to a first light deflecting means which deflects light from a first radial path to the axial path optically coupling the first and second radial light path as the shaft turns. A source of light and light sensing means are provided in the radial light paths which are optically coupled at discrete shaft positions.
REFERENCES:
patent: 2182717 (1939-12-01), Chance
patent: 2361973 (1944-11-01), Smith
patent: 2447344 (1948-08-01), Kliever
patent: 3054928 (1962-09-01), Schrenk et al.
patent: 3092434 (1963-06-01), Vinet
patent: 3209320 (1965-09-01), Earthman
patent: 3237012 (1966-02-01), Treffeisen
patent: 3290593 (1966-12-01), Crowdes
patent: 3351767 (1967-11-01), Suiter
patent: 3355593 (1967-11-01), Gately et al.
patent: 3693022 (1972-09-01), Dumast et al.
patent: 3725817 (1973-04-01), Nolan
patent: 3742486 (1973-06-01), Skidmore
patent: 3940609 (1976-02-01), Johnstun
patent: 4142149 (1979-02-01), Nador
patent: 4214154 (1980-07-01), Sato
patent: 4218726 (1980-08-01), Fukusawa et al.
patent: 4279507 (1981-07-01), Bulpitt
patent: 4291976 (1981-09-01), McMahon
patent: 4300548 (1981-11-01), Jones
patent: 4304460 (1981-12-01), Tanaka et al.
patent: 4344666 (1982-08-01), Birgmeir et al.
patent: 4352550 (1982-10-01), Uchida
patent: 4380043 (1983-04-01), Takamatsu et al.
Mid-West Instrument Sales Bulletin No. LLC80, Mar., 1981.
"A Guide to Optical Shaft Encoders", by C. Hudson, Instruments & Control Systems, May 1978.
Mid-West Instrument - Div. Astra Associates, Inc.
Nelms David C.
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