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. 12, 2007
Filed:
Mar. 16, 2005
Youzou Fukagawa, Tochigi-ken, JP;
Toshiyuki Yoshihara, Tochigi-ken, JP;
Mario Nakamori, Yokohama, JP;
Yuji Shinano, Tokyo, JP;
Youzou Fukagawa, Tochigi-ken, JP;
Toshiyuki Yoshihara, Tochigi-ken, JP;
Mario Nakamori, Yokohama, JP;
Yuji Shinano, Tokyo, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An optical apparatus including an image forming optical system having a movable optical element, and a driving mechanism. A first block obtains a linear evaluation value by normalizing, by a first tolerance, an aberration expressed by a linear function of a position of the movable optical element and normalizing, by a second tolerance, an aberration expressed by a quadratic function of the position out of the aberrations of the optical system. A second block obtains a minimum value of a dummy variable by linear programming. A third block determines a position of the optical element to be moved by the driving mechanism using a value prepared by adding a relaxation amount to the minimum value obtained by the second block and minimizes the weighted sum of the quadratic evaluation values by adjusting the weights assigned to the quadratic evaluation values and a relaxation amount.