Lens device and imaging device using the same

Details Lens device and imaging device using the same Lens device and imaging device using the same

2005-09-22

2008-09-09

Fuller, Rodney E (Department: 2862)

Photography

Having variable focal length of camera objective

Having focus operation

C396S075000

Reexamination Certificate

active

07424215

ABSTRACT:
A lens frame holding a taking lens is movably connected to a driving shaft via a connector. A guide member is disposed at a lower portion of the lens frame so as to separate from the connector by about 180 degrees around an optical axis. The guide member is movably attached to a guide rod. A light emitter is disposed on a lateral side of the lens frame so as to separate from the connector by about 90 degrees around the optical axis. The light emitter applies the light to a light receiver of a line sensor confronting the light emitter. The line sensor sends a light-reception signal, which is outputted from the light receiver, to a lens-position controller. Positional information of the taking lens is obtained on the basis of the light-reception signal so that a position of the taking lens is accurately detected.

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patent: 5589723 (1996-12-01), Yoshida et al.
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patent: 6392827 (2002-05-01), Ueyama et al.
patent: 4-69070 (1992-03-01), None
patent: 2003-315658 (2003-11-01), None

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