Photography – With exposure objective focusing means – focusing aid – or... – Lens drive circuit or motor structure
Patent
1995-09-13
1997-02-11
Perkey, W. B.
Photography
With exposure objective focusing means, focusing aid, or...
Lens drive circuit or motor structure
2502012, 396 91, G03B 1336, G02B 728
Patent
active
056026137
ABSTRACT:
A lens driving device for a camera or the like drives a lens through a correct distance by the distance through which the lens is driven being corrected according to errors in mechanical parts; as a result it is not necessary for the mechanical parts to be made of high precision, and maintenance of molds used in their manufacture can therefore be made easy.
REFERENCES:
patent: 4423934 (1984-01-01), Lambeth et al.
patent: 4924253 (1990-05-01), Imai et al.
patent: 5274416 (1983-12-01), Kawasaki et al.
Akimoto Kazuo
Tanikawa Miyoshi
Tsuyuki Hiroto
Perkey W. B.
Seiko Precision Inc.
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