AFOCAL WIDE-ANGLE ATTACHMENT Russian patent published in 1994 - IPC

Abstract RU 2006050 C1

FIELD: television and cine optics. SUBSTANCE: attachment has two components. First component is negative and made in the form of a biconcave lens and a positive or negative meniscus which concavity faces an object. The second component is a biconvex lens. EFFECT: improved quality. 7 dwg

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RU 2 006 050 C1

Authors

Savoskin Vladimir Il'Ich

Berezentseva Galina Grigor'Evna

Dates

1994-01-15—Published

1992-07-28—Filed