FRESNEL PRISM Russian patent published in 1997 - IPC

Abstract RU 2093875 C1

FIELD: medical engineering; ophthalmology. SUBSTANCE: Fresnel prism includes set of prism members having different values of prism diopters. Reflecting angle of each subsequent prism member is determined by relation: αn = αn-1 + const, where αn is reflecting angle of optical prism member; const is constant preset value. EFFECT: enhanced diagnostics. 2 cl, 1 dwg

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RU 2 093 875 C1

Authors

Petrenko Aleksandr Egorovich

Rozenbljum Jurij Zakharovich

Kapranova Alla Stanislavna

Zapadinskij Boris Isakovich

Dates

1997-10-20Published

1995-12-14Filed