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. 02, 2024
Filed:
Apr. 26, 2022
Aac Optics (Suzhou) Co., Ltd., Suzhou, CN;
Hiroyuki Teraoka, Osaka, JP;
AAC Optics (Suzhou) Co., Ltd., Suzhou, CN;
Abstract
The present invention relates to the field of optical lenses and provides a zoom lens consisting of, from an object side to an image side in sequence, a first lens having negative refractive power, a second lens group having positive refractive power, a fifth lens having positive refractive power, and a sixth lens having negative refractive power. During zooming, a distance between adjacent lenses or between lens and adjacent lens group in a direction of an optic axis varies. The second lens group consists of a second lens having positive refractive power, a third lens having negative refractive power, and a fourth lens having negative refractive power, and following conditions are satisfied: f_Tele/f_Wide≥1.80; −1.75≤f3/f2≤−1.35; −1.75≤f4/f2≤−1.35. The present invention becomes compact when contracted, while during imaging, FNO is bright, and has good optical properties.