Optical material level probe

Details Optical material level probe Optical material level probe

1977-08-25

1979-05-22

Dahl, Lawrence J.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

73293, G01N 2126

Patent

active

041561490

ABSTRACT:
An optical level detection probe is disclosed having first and second spaced apart optic guides, each guide having a 45.degree. angle reflecting face or surface opposing one another such that light traveling along the first optic guide will reflect off of its 45.degree. angle face, reflect off of the 45.degree. angle face of the second optic guide, and travel along the second optic guide for detection by a sensor as long as the material is below the reflecting surfaces. When the material reaches the reflecting surfaces, the light will be blocked.

REFERENCES:
patent: 2892378 (1959-06-01), Canada
patent: 3120125 (1964-02-01), Vasel
patent: 3895235 (1975-07-01), Melone
patent: 4082959 (1978-04-01), Nakashima

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