Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Apparent Illuminance as a Function of Range in Gated, Laser Night-Viewing Systems

Not Accessible

Your library or personal account may give you access

Abstract

Gated, laser night-viewing systems are briefly described, and a method of calculation is presented for determining apparent illuminance as a function of target distance. A general equation for gated viewing system is developed,

L(x)=Q0I(x,ct)·ϒ(x,ct)dt,
where L(x) is apparent illuminance, I(x,ct) is illuminance as a function of time, and ϒ(x,ct) is optical transmittance of a shutter. Its practical use is discussed and illustrated, and it is shown that optimum performance is achieved by using a light pulse of duration equal to the shutter open period. Methods are outlined for calculation of integrated beam backscatter. Variations in the apparent illuminance profile for various laser pulse shapes and shutter transmittance functions are discussed. Several specific cases, including one highly practical case apt to occur in actual systems, are treated quantitatively.

© 1966 Optical Society of America

Full Article  |  PDF Article
More Like This
Locus of Perceived Equidistance as a Function of Viewing Distance*

John M. Foley
J. Opt. Soc. Am. 56(6) 822-827 (1966)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (12)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (34)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved