The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 24, 2003
Filed:
Jun. 18, 2001
Pentax Corporation, Tokyo, JP;
Abstract
An electronic camera (digital camera) includes a taking optical system that forms an image of a subject, a lowpass filter and a CCD area sensor that captures the image formed by the taking optical system. The lowpass filter is mounted on a driving mechanism that moves it in the direction parallel to a light-receptive surface of the CCD. The driving mechanism consists of a pair of filter guides that support the filter, a pair of shafts that guide rectilinear movement of the filter, a cam disc that is rotated by a motor and a cam follower attached on the guide. When the picture is taken, the motor rotates the disk, which reciprocates the filter. Since the movement of the lowpass filter moves the shadow of the dust formed on the CCD area sensor, an influence of the shadow is diffused among a larger number of pixels.