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RU

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2 057 493

(13)

C1

(51)

IPC

(21) (22)

Application

92002649/14, 1992-10-30

(22)

Actual filing date

1992-10-30

(45)

Published

1996-04-10

(72)

Inventor

Fedorov S.N.Zakharov V.D.Karamjan A.A.Bessarabov A.N.

(73)

Holder

Mezhotraslevoj Nauchno-Tekhnicheskij Kompleks Glaza"

BIFOCAL ARTIFICIAL EYE LENSES Russian patent published in 1996 - IPC

Abstract RU 2057493 C1

FIELD: medical engineering. SUBSTANCE: device has peripheral optical part made in form of four alternating curvilinear segments differing in focal length. Each segment differing in focal length is formed by tangential and oppositely directed lines drawn through four equidistantly spaced points on the circle enclosing a ring-shaped zone and circular arcs enclosing the optical part and ring-shaped zone, respectively. EFFECT: improved vision function. 4 dwg

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RU 2 057 493 C1

Authors

Fedorov S.N.

Zakharov V.D.

Karamjan A.A.

Bessarabov A.N.

Dates

1996-04-10—Published

1992-10-30—Filed

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