Aligning optical and mechanical elements for optical motion sens

Details Aligning optical and mechanical elements for optical motion sens Aligning optical and mechanical elements for optical motion sens

1988-01-29

1989-05-16

Westin, Edward P.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

250231R, H01J 516

Patent

active

048312525

ABSTRACT:
A technique is disclosed for achieving critical alignment of optical and mechanical elements, in which one of the foregoing is movable with respect to the other. Specifically, an optical fiber (12) is aligned with respect to a movable member (19) in a first position. The movable member is then displaced to a second position and high levels of radiant energy at a first discernible wavelength are transmitted down the fiber optic path to alter, or pattern, a wavelength sensitive surface area or coating (16) on the surface of the movable member. The movable member is then freed, and radiant energy of a second wavelength to which the coating is insensitive is used to sense the position of the movable member with respect to the fiber optic.

REFERENCES:
patent: 4719341 (1988-01-01), Hoogenboom

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