Flat field lens with image splitting effect

Details Flat field lens with image splitting effect Flat field lens with image splitting effect

1980-04-14

1983-01-04

Corbin, John K.

354219, G02B 308, G03B 1302

Patent

active

043670164

ABSTRACT:
Disclosed is a flat field lens having an image splitting effect, comprising a generally planar lens of substantially transparent material having an optical axis; and a plurality of deformations of identical cross-sectional configuration formed on concentric paths about the optical axis of the transparent lens. Each of the deformations has at least two light-refracting surfaces which are symmetrical to an axis of the deformation, wherein the axis of symmetry of each deformation lying on the same concentric path has the same inclination with respect to the optical axis, and the inclination of the axes of symmetry of deformations located on radially adjacent concentric paths varies, preferably constantly, with respect to the optical axis.

REFERENCES:
patent: 3004470 (1961-10-01), Ruhle
patent: 3523720 (1970-08-01), Schiele
patent: 3740119 (1973-06-01), Sakurai et al.
patent: 4057048 (1977-11-01), Maine
patent: 4076384 (1978-02-01), Daml et al.

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