Photography – With exposure objective focusing means – focusing aid – or... – Lens drive circuit or motor structure
Reexamination Certificate
2006-09-08
2009-12-29
Perkey, WB (Department: 2862)
Photography
With exposure objective focusing means, focusing aid, or...
Lens drive circuit or motor structure
C359S824000
Reexamination Certificate
active
07639938
ABSTRACT:
An auto-focusing lens of a camera includes a lens unit (11), a permanent magnet (12) being fixedly mounted around the lens unit to move with the lens unit, a first coil seat (15a) arranged on a first side of the magnet with a first winding (14a) wound thereon, and a second coil seat (15b) arranged on a second side opposite to the first side of the magnet with a second winding (14b) wound thereon. The first and second windings and the first and second coil seats are provided for establishing magnetic fields when electric currents are applied to the first and second windings. The magnetic fields interact with the magnetic field of the permanent magnet to drive the lens unit into movement between its front focus point (A) and its rear focus point (B).
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Chang Chin-Hung
Chung Jen-Hung
Hong Chien-Long
Hsiao Cheng-Fang
Huang Ching-Hsing
Foxconn Technology Co., Ltd.
Niranjan Frank R.
Perkey WB
Rhodes Leon W
LandOfFree
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