Abstract

A gravity referenced optical inclinometer which uses a transparent fluid as angle-sensor element is described. Its principle of operation is based on light refraction at a free surface of the fluid. Measurements were carried out in an optical inclinometer built by the authors, and a resolution of 0.007° was obtained. The inclinometer permits real-time angle determinations along two perpendicular axis.

© 1996 Optical Society of America

Engineering & Laboratory Notes Measurement of Refractive Indices of Prismatic Materials

Sigmund Waldenstrom and K. Razi Naqvi
Appl. Opt. 35(34) 6815-6816 (1996)

Probing changes in tilt angle with 20 nanoradian resolution using an extrinsic Fabry-Perot interferometer-based optical fiber inclinometer

Yiyang Zhuang, Yizheng Chen, Chen Zhu, Rex E. Gerald, and Jie Huang
Opt. Express 26(3) 2546-2556 (2018)

Engineering & Laboratory Notes Achromatic Phase-Shifting for White-Light Interferometry

P. Hariharan
Appl. Opt. 35(34) 6823-6824 (1996)

Design and analysis of an optoelectronic inclinometer for simultaneous measurement of inclinations along two orthogonal directions

Chun-Jen Chen and Psang Dain Lin
Appl. Opt. 45(25) 6487-6496 (2006)

Engineering & Laboratory Notes Hysterisis in DC Bias Drift of LiNbO₃ Optical Modulators

Naoki Mitsugi and Hirotoshi Nagata
Appl. Opt. 35(34) 6831-6832 (1996)