Doublet lens microfiche construction

Details Doublet lens microfiche construction Doublet lens microfiche construction

1975-01-08

1978-08-29

Artis, Henry K.

Optics: image projectors

Picture carrier

353 27R, 353 38, G03B 2111, G03B 2100

Patent

active

041100220

ABSTRACT:
A microfiche structure consisting of a laminate of an opaque, apertured web sandwiched between two transparent sheets. The transparent material partially extends into each aperture to thereby define, for each aperture, an optical doublet. The laminate may be continuously formed by compression, as by rolls.

REFERENCES:
patent: 2736235 (1956-02-01), Toulon
patent: 3324764 (1967-06-01), Altman
patent: 3510216 (1970-05-01), Wagman
patent: 3580675 (1971-05-01), Hieber
patent: 3592542 (1971-07-01), Kanfer
patent: 3712724 (1973-01-01), Courtney-Prah
patent: 3853395 (1974-12-01), Yevick

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