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:
Jul. 18, 2023
Filed:
Dec. 17, 2021
Screen Holdings Co., Ltd., Kyoto, JP;
Takuya Yasuda, Kyoto, JP;
SCREEN HOLDINGS CO., LTD., Kyoto, JP;
Abstract
In a focusing position detection method, a plurality of object images are acquired by imaging an imaging object by an imager while changing a focal position in M stages along an optical axis. A saturation consecutive region is acquired. The saturation consecutive region is included in all N (where N is a natural number equal to or more than three and equal to and less M) object images acquired while successively changing the focal position in N stages along the optical axis. A focusing degree decrease as the focal position approaches focusing position in the saturation consecutive region. Based on this property, the focusing position is detected.