Variable-focal-length lens

Details Variable-focal-length lens Variable-focal-length lens

1982-12-27

1986-01-14

Punter, William H.

G02B 129

Patent

active

045642672

ABSTRACT:
Disclosed is a variable-focal-length lens whose focal length can be electrically controlled by applying an electric field of uniform intensity distribution to a compound lens including at least one lens formed of electrooptic crystal and varying the intensity of the applied electric field.

REFERENCES:
patent: 3167607 (1965-01-01), Marks et al.
patent: 3520592 (1970-07-01), Leib et al.
patent: 3758201 (1973-09-01), MacNeille
patent: 4037929 (1977-07-01), Bricot et al.
patent: 4190330 (1980-02-01), Berreman
Vehara, S., "Focusing-Type Optical Modulator", IEEE Jr. of Quantum Electronics", 10-1973, pp. 984-986.

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