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:
Sep. 23, 2025
Filed:
May. 16, 2023
Southwest Petroleum University, Chengdu, CN;
Yi Qiu, Chengdu, CN;
Wei Wang, Chengdu, CN;
Fuzhi Chen, Chengdu, CN;
Lihua Li, Chengdu, CN;
Keqing Liu, Chengdu, CN;
Yun Qi, Chengdu, CN;
Huashan Lan, Chengdu, CN;
Lisha Wu, Chengdu, CN;
Southwest Petroleum University, Chengdu, CN;
Abstract
A double-dial measurement device and a measurement method for viewing angle measurement of an optical component are provided. The device includes a support frame, a large dial, a small dial, a vernier disc, verniers and an objective table. When the first locking knot is fastened and the small dial rotates, the large dial or the vernier disc are driven to rotate synchronously, which refers to a rotation motion centered on an axis of the large dial under external force. When a symmetrical light source is irradiated on the optical component, an exit angle of exit lights is used to measure the viewing angle, effectively measuring the effective viewing angle of a single optical component and an optical component set, evaluating the optical component or system with reference to the viewing angle, and providing guidance and reference for the optical component.