Optical displacement sensor and method for sensing linear displa

Details Optical displacement sensor and method for sensing linear displa Optical displacement sensor and method for sensing linear displa

1993-10-07

1994-12-06

Evans, F. L.

Optics: measuring and testing

By polarized light examination

With light attenuation

2502311, G01B 1100

Patent

active

053715985

ABSTRACT:
A device and method for sensing linear displacements between a first member (101) and a second member (102) on a same axis (108). The second member (102) substantially encompasses the first member (101). To sense the linear displacements, an optical code pattern (103) is placed on the first member (101) and an encircling optical sensor (104) is placed on the second member (102). The encircling optical sensor (104) includes light transmitting (106) and receiving (107) paths that transmit and receive light to/from the optical code pattern (103). The light received from the optical code pattern (103) is sent to a displacement calculation device (105) that determines the linear displacement of the first member (101) with respect to the second member (102). Using this technique, linear displacements of the first member (101) with respect to the second member (102) can be accurately measured in high temperature environments without adversely affecting electrical components associated with the displacement calculation device (105).

REFERENCES:
patent: 4107604 (1978-08-01), Bernier
patent: 4291976 (1981-09-01), McMahon
patent: 4310172 (1982-01-01), Claude et al.
patent: 4356395 (1982-10-01), Miller
patent: 4362358 (1982-12-01), Hafle
patent: 4376387 (1983-03-01), Stevens et al.
patent: 4384038 (1983-05-01), Khoe et al.
patent: 4453725 (1984-06-01), Kuwana et al.
patent: 4477190 (1984-10-01), Liston et al.
patent: 4555120 (1985-11-01), Frait et al.
patent: 4596320 (1986-06-01), Shimokura et al.
patent: 4604725 (1986-08-01), Davies et al.
patent: 4836578 (1989-06-01), Soltis
patent: 4867475 (1989-09-01), Groves
patent: 4890858 (1990-01-01), Blankenship
patent: 4897671 (1990-01-01), Mahapatra et al.
patent: 4902903 (1990-02-01), Segerson et al.
patent: 4953933 (1990-09-01), Asmar
patent: 4991509 (1991-02-01), Smith
patent: 5047629 (1991-09-01), Geist
patent: 5064031 (1991-11-01), Kakizaki

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