Abstract

An expression is derived for the required shape of an aperture, when a chopper blade rotating over it periodically transmits light through it. Harmonics are inherently low in this scheme; the system is easily constructed and should prove particularly useful in the testing of the many photo and infrared detectors the frequency response of which extends into the ultrasonic region.

© 1963 Optical Society of America

One- and Two-Dimensional Processing in Line Scanning Systems

L. G. Callahan and W. M. Brown
Appl. Opt. 2(4) 401-407 (1963)

The Focusing of Light by a Dielectric Rod

J. McKenna
Appl. Opt. 2(3) 303-310 (1963)

Helium Continuum Light Source for Photoelectric Scanning in the 600–1100 Å Region

R. E. Huffman, Y. Tanaka, and J. C. Larrabee
Appl. Opt. 2(6) 617-623 (1963)

The Production and Use of Variable-Transmittance Sinusoidal Test Objects

Robert L. Lamberts
Appl. Opt. 2(3) 273-276 (1963)

Limiting Parameters and Generalized Characteristics of Xenon Lamps

I. S. Marshak
Appl. Opt. 2(8) 793-799 (1963)