Image taking device, portable terminal device, image taking...

Details Image taking device, portable terminal device, image taking... Image taking device, portable terminal device, image taking...

2006-10-13

2009-10-27

Fuller, Rodney E (Department: 2862)

Photography

Having variable focal length of camera objective

Automatic change of focal length

C396S089000

Reexamination Certificate

active

07609955

ABSTRACT:
An image taking device has a multifocal lens which changes its focal length to change the image taking area on a subject from which an image is to be taken by an image pickup sensor, a distance sensor for measuring the distance to the subject, an image taking distance buffer unit for temporarily storing the image taking distance measured at a past time, a focal length computation unit which computes the focal length of the multifocal lens on the basis of the image taking distance at the present time measured by the distance sensor and the image taking distance supplied from the mage taking distance buffer unit, and a focus control unit which controls the focal length of the multifocal lens so that the focal length of the multifocal lens equals the focal length computed by the focal length computation unit.

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International Search Report issued Jan. 23, 2007 in the International (PCT) Application of which the present application is the U.S. National Stage.
“Digital Single-Lens Reflex Camera, *istDA, Instructions for use”, PENTEX Corporation, p. 48.

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