We propose what we believe to be a novel method for highly accurate three-dimensional (3D) angle measurement based on propagation vector analysis of digital holography. Three-dimensional rotations in space can be achieved by use of a CCD camera and a multifacet object, which reflects an incident wave into different directions. The propagation vectors of the reflected waves from the object can be extracted by analyzing the object spectrum of the recorded hologram. Any small rotation of the object will induce a change in the propagation vectors in space, which can then be used for 3D angle measurement. Experimental results are presented to verify the idea.
© 2007 Optical Society of America
Instrumentation, Measurement, and Metrology
Original Manuscript: January 16, 2007
Revised Manuscript: March 18, 2007
Manuscript Accepted: March 20, 2007
Published: May 18, 2007
Lingfeng Yu, Giancarlo Pedrini, Wolfgang Osten, and Myung K. Kim, "Three-dimensional angle measurement based on propagation vector analysis of digital holography," Appl. Opt. 46, 3539-3545 (2007)