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:
Apr. 09, 2002
Filed:
Mar. 27, 1997
Iwao Ishida, Higashiosaka, JP;
Akio Kinba, Suita, JP;
Minolta Co., Ltd., Osaka, JP;
Abstract
The AF sensor module primarily comprises condenser lens , mirror , aperture mask , separator lens and CCD . Separator lens is located such that its lengthwise center line M may be parallel to the lengthwise center line N of CCD while it is inclined by micro-angle &dgr; with center line M as the rotational axis. By arranging the lens surface of separator lens and the image pickup surface of CCD such that they are non-parallel to each other, reflected light L existing due to the reflection of light between separator lens and CCD is prevented from striking CCD once again so that a reduction in the accuracy of focus detection caused by said reflected light may be prevented.