OSA's Digital Library

Journal of the Optical Society of America

Journal of the Optical Society of America

  • Vol. 35, Iss. 2 — Feb. 1, 1945
  • pp: 149–149

The Projection of Light

FRANK BENFORD  »View Author Affiliations


JOSA, Vol. 35, Issue 2, pp. 149-149 (1945)
http://dx.doi.org/10.1364/JOSA.35.000149


View Full Text Article

Acrobat PDF (785 KB)





Browse Journals / Lookup Meetings

Browse by Journal and Year


   


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools

Share
Citations

Abstract

The distribution of light in a searchlight beam is computed by determining the image formation at a point on the mirror or lens, then from this elemental image the image from a zone is derived: These zonal images are in turn summed graphically to find the beam from the complete searchlight. Some of the more important characteristics of a projected beam, such as angular width and the region in which the inverse square rule may be used to compute illumination, are outlined, and some attention is paid to the short range region that must often be used in testing. Lenses are discussed, largely to bring out their limitations, and some of the characteristics of the ellipsoid and hyperboloid are outlined. Test data on a mirror made of a combination of these two basic curves are presented to show how the filament images can be suppressed.

Citation
FRANK BENFORD, "The Projection of Light," J. Opt. Soc. Am. 35, 149-149 (1945)
http://www.opticsinfobase.org/josa/abstract.cfm?URI=josa-35-2-149


Sort:  Journal  |  Reset

References

References are not available for this paper.

Cited By

Alert me when this paper is cited

OSA is able to provide readers links to articles that cite this paper by participating in CrossRef's Cited-By Linking service. CrossRef includes content from more than 3000 publishers and societies. In addition to listing OSA journal articles that cite this paper, citing articles from other participating publishers will also be listed.

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited