Zoom lens mount barrel

Details Zoom lens mount barrel Zoom lens mount barrel

1980-10-09

1983-06-14

McGraw, Vincent P.

G02B 710

Patent

active

043879683

ABSTRACT:
A compact and lightweight zoom lens mount barrel in which the number of layers between the outer edges of lenses and the outer surface of the mount barrel is minimized and for which the assembly operation is simplified. A rear lens group moving cam slots is formed in a support sleeve and a fixed connecting sleeve is threadedly engaged with the support sleeve. Front and rear lens support frames are respectively engaged with the outer and inner periphery of the support sleeve. A front lens group moving cam slots is formed in the front lens group support frame. A fixed sleeve is engaged with the connecting sleeve by a stop screw.

REFERENCES:
patent: 3944340 (1976-03-01), Hashimoto

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