Focussing plate

Details Focussing plate Focussing plate

1983-03-14

1983-12-20

Adams, Russell E.

G03B 1302

Patent

active

044213980

ABSTRACT:
A focussing plate for photographic cameras, etc. which is constructed with a multitude of micro-lens shaped curved surfaces arranged on a substrate surface at a space interval among them of from 5 to 30 .mu.m, and other curved surfaces arranged in the boundary spaces among these micro-lens shaped curved surfaces having a curvature just opposite to that of the micro-lens shaped curved surfaces.

REFERENCES:
patent: 3602085 (1971-08-01), Wagner et al.
patent: 3661065 (1972-05-01), Yamazaki et al.
patent: 4003637 (1977-01-01), Masuoka
patent: 4309093 (1982-01-01), Kuwayama et al.

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