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:
Mar. 20, 2018
Filed:
Apr. 05, 2016
Canon Kabushiki Kaisha, Tokyo, JP;
Koji Aoki, Saitama, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
Provided is an image pickup apparatus, including: an image pickup optical system including a protection lens, which is arranged closest to a light incident side and has a convex-shaped surface on light incident side; and a housing houses the image pickup optical system, in which the image pickup optical system includes an aperture stop, and an optical systems A and B, which are arranged on an image side of aperture stop to be selectively placed in an optical path of image pickup optical system, the optical systems A and B having mutually different optical characteristics, and in which the housing separates a medium outside of housing and an inside of housing, and in which the image pickup apparatus further includes a switching unit selectively places one of optical systems A and B in optical path of image pickup optical system depending on a medium outside housing.