Abstract

An instrument is described that allows measuring within a few milliseconds the angular intensity distributions of light sources, particularly light scattering objects. The basic idea is to achieve a rapid rotation of the direction of observation by means of a rotating prism and two conical reflecting surfaces. The photosensitive detector as well as the light source remain fixed. Light scattering experiments done with a suspension of polystyrene latex spheres demonstrate the operation of the instrument. The short measuring period is of special importance for the investigation of small particles in time-dependent processes or for serial analyses.

© 1974 Optical Society of America

Multichannel Forward Scattering Meter for Oceanography

W. R. McCluney
Appl. Opt. 13(3) 548-555 (1974)

Instrument for Measuring the Roughness of Supersmooth Surfaces

B. P. Hildebrand, R. L. Gordon, and E. V. Allen
Appl. Opt. 13(1) 177-180 (1974)

Comparative Performance of Color-Measuring Instruments; Second Report

Fred W. Billmeyer, Ellen D. Campbell, and Robert T. Marcus
Appl. Opt. 13(6) 1510-1518 (1974)

Measurement of Energy and Angular Distributions of Extreme Ultraviolet Photoelectrons

W. McMahon and L. Heroux
Appl. Opt. 13(2) 438-443 (1974)

Interferometric Angular Measurement

G. D. Chapman
Appl. Opt. 13(7) 1646-1651 (1974)