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. 19, 2024
Filed:
Oct. 19, 2021
Applicant:
Hitachi, Ltd., Tokyo, JP;
Inventor:
Takeshi Shimano, Tokyo, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B 3/00 (2006.01); H04N 23/80 (2023.01);
U.S. Cl.
CPC ...
G02B 3/0056 (2013.01); G06T 5/73 (2024.01); H04N 23/80 (2023.01);
Abstract
An imaging optical system includes an optical component having a plurality of annular grooves formed to provide a phase to optical ray propagating an effective pupil, the phase causing the longitudinal aberration of the optical ray to alternate plural times to zigzag, and therefore, a focal-depth extended image being clear and having a large focal depth in a uniform image quality is achieved in a wide defocus range in front and back of a focal point.