Abstract

The effect of defocusing on the diffraction images of a general periodic triangular-wave object has been investigated for the case of a narrow rectangular aperture. Results in the form of curves have been given for irradiance distribution and contrast in the images. The aperture has been assumed to be illuminated incoherently. A close similarity has been shown between the sine-wave response and triangular-wave response of a particular object function.

© 1969 Optical Society of America

Method of Measuring the Modulation Transfer Function of an Apodized Circular Aperture

K. Singh and K. N. Chopra
J. Opt. Soc. Am. 60(5) 641-645 (1970)

Image of a General Periodic Bar Pattern through an Aberration-Free Annular Aperture

K. Singh and A. K. Kavathekar
J. Opt. Soc. Am. 59(8) 936-941 (1969)

Modulation of a General Periodic Object with Triangular Waveform by a Narrow Rectangular Aperture with Amplitude Filters

K. Singh and K. N. Chopra
Appl. Opt. 8(8) 1695-1702 (1969)

Analysis of Image-Forming Properties of a Fiber Assembly Used as a Dynamic Scanner

P. K. Katti, K. Singh, A. K. Kavathekar, and G. S. Bhatnagar
J. Opt. Soc. Am. 60(8) 1017-1022 (1970)

Effect of an Apodizing Screen on the Rectangular and Triangular Wave Response of a Circular Aperture with Incoherent Incident Light

P. K. Katti, K. Singh, and A. K. Kavathekar
Appl. Opt. 9(1) 129-134 (1970)