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. 14, 2020
Filed:
Dec. 28, 2016
Applicant:
Olympus Corporation, Hachioji-shi, Tokyo, JP;
Inventors:
Takahiro Amanai, Hachioji, JP;
Ayami Imamura, Hachioji, JP;
Assignee:
OLYMPUS CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61B 1/05 (2006.01); A61B 1/04 (2006.01); G02B 23/24 (2006.01); G02B 27/42 (2006.01); G02B 15/20 (2006.01);
U.S. Cl.
CPC ...
G02B 23/2438 (2013.01); A61B 1/05 (2013.01); A61B 1/051 (2013.01); G02B 23/2461 (2013.01); G02B 23/2484 (2013.01); G02B 27/4211 (2013.01); A61B 1/041 (2013.01); A61B 2562/162 (2013.01); A61B 2562/164 (2013.01); A61B 2562/166 (2013.01); G02B 15/20 (2013.01);
Abstract
An image pickup apparatus includes an image forming optical system which includes an aperture stop that sets an axial light beam, and a diffracting optical surface disposed at a position different from a position where the aperture stop is disposed, and an imager which is disposed on an image side of the image forming optical system, and has a light-receiving surface which is not flat and is curved to be concave toward the image forming optical system, wherein the diffracting optical surface satisfies the following conditional expression (1).0.1<||≤1.0  (1)