Photography – Having variable focal length of camera objective – Power zoom
Patent
1997-05-28
1999-04-06
Perkey, W. B.
Photography
Having variable focal length of camera objective
Power zoom
396133, 310 68B, 25023114, G03B 310, G01D 534
Patent
active
058929894
ABSTRACT:
A skirt located on a worm is inserted in a C-shaped hole of a photo-interrupter blade wheel, and a motor shaft passes thought the center of each of said members. The rotation of the worm is transmitted to photo-interrupter blades with a predescribed angle of play due to the relative dimensions of a notch formed on the skirt and the C-shaped hole.
REFERENCES:
patent: 4751888 (1988-06-01), Hanus
Kawasaki Toyotoshi
Ogura Hiroyuki
Minolta Co. , Ltd.
Perkey W. B.
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