1 September 2007 Small-dynamic-angle measurement using tangent relationship and phase-modulating technique
Author Affiliations +
Abstract
A method using two prisms for measurement of small dynamic angles is proposed in which the measurement is based on a simple tangent equation and a phase-modulating interferometer with a laser diode to measure dynamic optical path differences with higher accuracy. Owing to the simple tangent equation, the symmetry requirement on the two prisms in the optical configuration is eliminated, and easy measurement of the separations between two parallel beams with a position-sensitive detector is achieved. Small-dynamic-angle measurements are experimentally demonstrated with high accuracy.
©(2007) Society of Photo-Optical Instrumentation Engineers (SPIE)
Defeng Zheng, Xiangzhao Wang, and Osami Sasaki "Small-dynamic-angle measurement using tangent relationship and phase-modulating technique," Optical Engineering 46(9), 093602 (1 September 2007). https://doi.org/10.1117/1.2784480
Published: 1 September 2007
Lens.org Logo
CITATIONS
Cited by 2 scholarly publications.
Advertisement
Advertisement
RIGHTS & PERMISSIONS
Get copyright permission  Get copyright permission on Copyright Marketplace
KEYWORDS
Prisms

Signal detection

Interferometers

Modulation

Phase interferometry

Sensors

Optical testing

Back to Top