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:
Jan. 07, 2025
Filed:
Oct. 31, 2023
Sony Group Corporation, Tokyo, JP;
Sony Group Corporation, Tokyo, JP;
Abstract
Higher performance including better performance in focusing is achieved. A first lens group always fixed and having positive refractive power, and a first focus lens group that moves in an optical axis direction at the time of focusing from an object at infinity to an object at close range are included in order from the object side to the image side. A last lens group always fixed and having negative refractive power, and a second focus lens group that moves in an optical axis direction at the time of focusing from an object at infinity to an object at close range are included in order from the image side to the object side. At least one of the first focus lens group or the second focus lens group has negative refractive power. An aperture stop is disposed between the first focus lens group and the second focus lens group. Conditional Expression (1) below is satisfied:0.4<<1.0 (1)