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:
Feb. 18, 2025
Filed:
Dec. 22, 2022
Sintai Optical (Shenzhen) Co., Ltd., Guandong, CN;
Asia Optical Co., Inc., Taichung, TW;
Fang-Li Ma, ShenZhen, CN;
Bin Liu, ShenZhen, CN;
Fei Han, ShenZhen, CN;
Ling-Wei Zhao, ShenZhen, CN;
Yue-Ye Chen, ShenZhen, CN;
Hua-Tang Liu, Taichung, TW;
SINTAI OPTICAL (SHENZHEN) CO., LTD., Shenzhen, CN;
ASIA OPTICAL CO., INC., Taichung, TW;
Abstract
An optical system includes an objective lens module, an image inverting module, and an eyepiece module. The objective lens module includes a first lens group, a second lens group, a third lens group, a fourth lens group, and a fifth lens group. The optical system satisfies at least one of the following conditions: 0.45≤LGD/LGD≤0.8; 0.015 mm≤1/fG≤0.045 mm; 0.045 mm≤|1/fG|≤0.07 mm; 0.35≤|fG/fG|≤0.75; 0.15≤fG/f≤1.6; wherein LGD is an effective optical diameter of the fourth lens group, LGD is an effective optical diameter of the first lens group, fGis an effective focal length of the first lens group, fGis an effective focal length of the third lens group, fGis an effective focal length of the fourth lens group, and f is an effective focal length of the objective lens module.