Optical apparatus

Details Optical apparatus Optical apparatus

1998-09-08

1999-10-19

Perkey, W. B.

Photography

Having variable focal length of camera objective

Having focus operation

396 85, 396133, 396458, 396542, 359698, 359701, 359740, 359823, G03B 1334, G03B 900, G03B 1700, G02B 704

Patent

active

059702591

ABSTRACT:
An optical apparatus according to the present invention includes a cylindrical holding barrel, a lens moving mechanism including a cylindrical cam which is rotatably fitted on an outer surface of the holding barrel in such a manner that a plurality of moving lens frames held in the holding barrel are moved in an optical axis direction, a light quantity adjusting mechanism held in the holding barrel, for adjusting a quantity of light passing therethrough, lens moving mechanism driving sources for driving the lens moving mechanism, and light quantity adjusting mechanism driving sources for driving the light quantity adjusting mechanism. The lens moving mechanism driving sources and the light quantity adjusting mechanism driving sources are held in the holding barrel.

REFERENCES:
patent: 5489958 (1996-02-01), Katagiri et al.
patent: 5508781 (1996-04-01), Imai et al.
patent: 5559571 (1996-09-01), Miyamoto et al.
patent: 5724194 (1998-03-01), Ishikawa

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