Zoom lens device and method of assembling the same

Details Zoom lens device and method of assembling the same Zoom lens device and method of assembling the same

1993-01-08

1994-11-08

Ben, Loha

Optical: systems and elements

Lens

With variable magnification

359827, 359900, G02B 2700, G02B 1522

Patent

active

053632486

ABSTRACT:
Guide bars supporting a plurality of lens frames are inserted through the opening formed in a side of a lens housing. The direction of insertion is perpendicular to the optical axis of the lenses supported by the lens frames. The guide bars and lens frames are then arranged at predetermined positions in the lens housing. Then, a cam tube is inserted through the opening in the direction perpendicular to the optical axis. Cam pins formed on the lens frames are then coupled to cam grooves formed in the cam tube.

REFERENCES:
patent: 4318593 (1982-03-01), Tsuji et al.
patent: 4799073 (1989-01-01), Asano et al.
patent: 5113261 (1992-05-01), Morisawa
patent: 5140468 (1992-08-01), Kayanuma
patent: 5177638 (1993-01-01), Emura et al.

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