Optical measuring head

Details Optical measuring head Optical measuring head

1987-09-18

1989-03-28

Westin, Edward P.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

350 9615, G02B 600

Patent

active

048166707

ABSTRACT:
An optical measuring head which includes a cylindrical portion having a circular cross section, a plurality of light projecting fibers axially disposed in the cylindrical portion through a predetermined distance, a light receiving fiber provided along an axis of the cylindrical portion, and a convex lens formed, at its outer peripheral portion, with a light receiving face for receiving the light from the light projecting fibers and directing the light through the lens so that the light will be incident upon a flat surface of the lens adjacent an object to be measured, through an angle smaller than a critical angle whereby the light will not be reflected by the flat surface, and disposed at a position coaxial with the light receiving fiber for focusing on a forward end face of the light receiving fiber.

REFERENCES:
patent: 4379225 (1983-04-01), Apothaker

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