Distance independent gauging system

Details Distance independent gauging system Distance independent gauging system

1990-03-28

1991-10-22

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

356375, G01N 2186, G01B 1114

Patent

active

050598104

ABSTRACT:
An optical gauging system which includes an aperture positioned on an axis between two lenses at a distance from each equal to their respective focal lengths and, utilizing radiation from a remote object parallel to the axis, the system being operable to determine the position or size of the object regardless of its distance from the system.

REFERENCES:
patent: 3002098 (1961-09-01), Watkins
patent: 4622502 (1986-11-01), Maruo et al.
patent: 4789242 (1988-12-01), Takagi et al.
patent: 4827120 (1989-05-01), Stauffer
U.S. Ser. No. 202,074 filed by Stauffer on Jun. 3, 1988.

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