Wavefront light beam splitter

Details Wavefront light beam splitter Wavefront light beam splitter

1982-07-30

1985-07-23

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Photocell controls its own optical systems

350171, 350172, G01J 120

Patent

active

045310548

ABSTRACT:
A light beam splitter for splitting a light beam from a focusing lens to obtain two split light beams incident on respective light receiving elements, as a pair, wherein a total reflection film is formed to one side of a substantial boundary surface constituted by a plane containing the optical axis of said focusing lens so that said light beam is split into two by said total reflection film, and said pair light receiving elements are disposed such that the split light beam transmitted through a region free from said total reflection film is received by one of the light receiving elements while the split light beam reflected in a region where said total reflection film is situated is received by the other light receiving element.

REFERENCES:
patent: 3844658 (1974-10-01), Gela et al.
patent: 4341953 (1982-07-01), Sakai et al.

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