US 12,422,333 B2
Dual-dial measurement device and measurement method for viewing angle measurement of optical component
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); and Lisha Wu, Chengdu (CN)
Assigned to Southwest Petroleum University, Chengdu (CN)
Filed by Southwest Petroleum University, Chengdu (CN)
Filed on May 16, 2023, as Appl. No. 18/318,341.
Claims priority of application No. 202210533300.0 (CN), filed on May 17, 2022.
Prior Publication US 2023/0375438 A1, Nov. 23, 2023
Int. Cl. G01B 5/24 (2006.01); G01M 11/02 (2006.01)
CPC G01M 11/0207 (2013.01) [G01B 5/24 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A double-dial measurement device for viewing angle measurement of an optical component, comprising:
a support frame;
a large dial, connected to the support frame;
a small dial, connected to the support frame and capable of rotating relative to the support frame, wherein the small dial is eccentric with the large dial and an axis of the small dial is parallel to an axis of the large dial;
a vernier disc, connected to the support frame, wherein the vernier disc is coaxial with the large dial;
at least one vernier, disposed on the vernier disc and attached to the large dial;
an objective table, connected to the support frame and disposed directly above a center of the vernier disc;
wherein the large dial and the vernier disc are capable of rotating relative to each other; a first locking knob is disposed between the small dial and one of the large dial and the vernier disc, and when the first locking knob is fastened and the small dial rotates, the one of the large dial and the vernier disc is configured to rotate synchronously;
wherein a levelness of the objective table is configured to be adjusted and not to be adjusted, a height of the objective table is configured to be adjusted and not to be adjusted, the objective table is configured to be rotated and not rotated relative to the support frame, and a height of the small dial is configured to be adjusted and not to be adjusted; and
wherein the rotating is a rotation motion centered on the axis of the large dial under an external force.