Locking flip-up telescopic lens assembly

Details Locking flip-up telescopic lens assembly Locking flip-up telescopic lens assembly

1996-04-19

1997-07-29

Dang, Hung X.

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

With auxiliary lenses movable in and out of the optical path

351 57, 351158, G02C 708, G02C 100

Patent

active

056526369

ABSTRACT:
An optical spectacle device comprising a spectacle frame having a pair of optical lenses. The spectacle device further includes a telescopic lens assembly pivotally attached to the spectacle frame which is pivotable between an operative position and a non-operative position. The spectacle device also includes an indexing mechanism for repeatedly orienting the telescopic lens assembly into the operative position from the non-operative position. A support frame for holding the telescopes of the telescopic lens assembly is adapted to be substantially out of a user's forward line of sight when the telescopic lens assembly is in the operative position.

REFERENCES:
patent: D296337 (1988-06-01), Caplan
patent: 2459021 (1949-01-01), Frommer
patent: 3990788 (1976-11-01), Choy
patent: 4534627 (1985-08-01), Vosper
patent: 4740069 (1988-04-01), Baum
patent: 4929075 (1990-05-01), Eliakim
patent: 5076682 (1991-12-01), Pasfield
patent: 5381263 (1995-01-01), Nowak et al.
patent: 5541767 (1996-07-01), Murphy et al.

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