Optical rotation sensor

Details Optical rotation sensor Optical rotation sensor

1992-12-07

1994-06-07

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

25022711, G01D 534

Patent

active

053191960

ABSTRACT:
In a preferred embodiment, an optical rotation sensor for a rotating member, the optical rotation sensor including: at least one reflective element disposed on the surface of the rotating member; first light transmission means to transmit light from a light source, disposed at the proximal end of the first light transmission means remote from the rotating member, to illuminate the surface of the rotating member at the distal end of the first light transmission means; and second light transmission means to transmit from the distal end of the second light transmission means to a first photodetector, disposed at the proximal end of the second light transmission means remote from the rotating member, light reflected from the at least one reflective element as the at least one reflective element passes the distal end of the second light transmission means as the rotating member rotates.

REFERENCES:
patent: 3901581 (1975-08-01), Thiel
patent: 4072399 (1978-02-01), Love
patent: 4500870 (1985-02-01), Krohn et al.
patent: 4650995 (1987-03-01), Tokunaga et al.
patent: 4893007 (1990-01-01), Stannow et al.
patent: 5214278 (1993-05-01), Banda

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