Crossed cylindrical lens

Details Crossed cylindrical lens Crossed cylindrical lens

1979-03-26

1980-10-28

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Photocell controls its own optical systems

350167, G01J 136

Patent

active

042309425

ABSTRACT:
A lenslet array for use in a distance determining system. The array utilizes a plurality of cylindrical lenslets arranged in parallel relation with a crossed cylindrical lens arranged transverse to the lenslets and lying in a plane parallel to the plane of the lenslets. The focal lengths of the lens and the lenslets are chosen so that they project an oblong image in a common image plane. Elongated radiation detectors are positioned within the oblong image.

REFERENCES:
patent: 4035579 (1977-07-01), Roberts
patent: 4117325 (1978-09-01), Holle et al.
patent: 4185191 (1980-01-01), Stauffer

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