Television – Camera – system and detail – Optics
Reexamination Certificate
2005-08-30
2005-08-30
Epps, Georgia (Department: 2873)
Television
Camera, system and detail
Optics
C348S351000, C348S372000, C396S129000, C396S131000, C396S137000
Reexamination Certificate
active
06937285
ABSTRACT:
In order to be able to reduce power consumption while making possible manual operation in any scene when the photographic situation demands its use, an image pickup apparatus has a ring member arranged concentrically with the optical axis of lenses, a detecting device for detecting the quantity of variation resulting from the rotation of the ring member, a control device for shifting/stopping a group of optical lenses in the direction of their optical axis on the basis of the result of detection by the detecting device, and a power supply control device for changing the state of power supply to the detecting device according to the mode of use. Power supply to the detecting device is prohibited when in the automatic focusing mode, and permitted in a focusing-locked state when in the photo shooting mode. It is also prohibited in the viewing mode.
REFERENCES:
patent: 4864344 (1989-09-01), Arakawa et al.
patent: 4984000 (1991-01-01), Watanabe et al.
patent: 5606382 (1997-02-01), Suh
patent: 63-89824 (1988-04-01), None
patent: 7-093097 (1995-04-01), None
Japanese Office Action dated Mar. 23, 2004 of basic Japanese Patent Appln No. 2002-199835, (no transn).
Canon Kabushiki Kaisha
Dinh Jack
Epps Georgia
Morgan & Finnegan LLP.
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