Photography – With exposure objective focusing means – focusing aid – or... – Temperature compensating
Reexamination Certificate
2004-12-09
2009-08-11
Koval, Melissa Jan (Department: 2862)
Photography
With exposure objective focusing means, focusing aid, or...
Temperature compensating
C396S133000, C359S820000
Reexamination Certificate
active
07574126
ABSTRACT:
A lens position calculator is provided that determines a phase of a driving signal as a reference position of an imaging lens when an output value of a position detection sensor reaches a threshold value. The lens position calculator determines a position obtained by performing addition or subtraction on the reference position read out from a reference position storage as a judgment position, detects an output value of the position detection sensor at a timing in synchronization with the driving signal that drives a driver and at the judgment position, and judges whether the output value of the position detection sensor at the judgment position reaches the threshold value or not, so as to determine the reference position again.
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Hayashi Takayuki
Honjo Kenichi
Murayama Masato
Shibuno Kouji
Hamre Schumann Mueller & Larson P.C.
Koval Melissa Jan
Panasonic Corporation
Parker Autumn
LandOfFree
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