Related Experiment Video
Updated: Jul 16, 2026

Compact Lens-less Digital Holographic Microscope for MEMS Inspection and Characterization
Published on: July 5, 2016
Volume-holographic filters for rotational sensing of three-dimensional objects
Tun-Chien Teng1, Wen-Jay Zhong, Shi-Hsin Ma
1Department of Optics and Photonics, National Central University, Chung-Li 320, Taiwan.
Abstract:
A highly precise rotational filter based on a volume-holographic optical element is proposed and demonstrated. We present a clear theoretical calculation of the rotation sensitivity of the volume-holographic filter used to sense the rotation of a spherical ground glass object. By introducing the longitudinal displacement of the scattering point across the sphere, the sensitivity of the filter is greatly improved to 350 times that of a general case for a planar ground glass.
Related Concept Videos
Cylinders in Three-Dimensional Space
Three-Dimensional Microscopy in Microbiology

