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. 23, 2013
Filed:
Mar. 25, 2010
Kanato Adachi, Kawasaki, JP;
Toshiyuki Nagaoka, Tokyo, JP;
Kanato Adachi, Kawasaki, JP;
Toshiyuki Nagaoka, Tokyo, JP;
Olympus Corporation, Tokyo, JP;
Abstract
A focus position control apparatus includes a lens for forming an image from light from a subject, an imaging element and an imaging controller for performing photoelectric conversion on the subject image, lights having at least two different wavelengths or wavelength bands, on an imaging plane to generate at least a visible-region image signal and an infrared-region image signal, a focus-position movement mechanism for moving the lens in a direction along an optical axis relative to the imaging plane, a focusing state evaluator for evaluating a focusing state in each wavelength or wavelength band based on the generated visible-region image signal and infrared-region image signal, and a movement controller for driving the focus-position movement mechanism based on the evaluation result from the focusing state evaluator.