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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 38, Iss. 13 — May. 1, 1999
  • pp: 2787–2794

Transmittance of skew rays through metal light pipes

David G. Hawthorn and Tom Timusk  »View Author Affiliations


Applied Optics, Vol. 38, Issue 13, pp. 2787-2794 (1999)
http://dx.doi.org/10.1364/AO.38.002787


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Abstract

The transmittance of skew rays through metal light pipes is examined with ray tracing. The transmittance with respect to pipe length is compared with analytical approximations and with experimental data. The effects of pipe material, pipe shape, wavelength of the incident light, distribution of the incident light, and maximum angle of incidence on transmittance are examined. The transmittance is shown, in general, not to be exponential with respect to pipe length. Additionally, the effect on transmittance of elbows and gaps in a pipe is investigated.

© 1999 Optical Society of America

OCIS Codes
(080.0080) Geometric optics : Geometric optics
(080.2740) Geometric optics : Geometric optical design
(230.0230) Optical devices : Optical devices

History
Original Manuscript: August 26, 1998
Revised Manuscript: January 25, 1999
Published: May 1, 1999

Citation
David G. Hawthorn and Tom Timusk, "Transmittance of skew rays through metal light pipes," Appl. Opt. 38, 2787-2794 (1999)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-38-13-2787


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References

  1. R. C. Ohlmann, P. L. Richards, M. Tinkham, “Far infrared transmission through metal light pipes,” J. Opt. Soc. Am. 48, 531–533 (1958). [CrossRef]
  2. E. Fu, “Transmission of submillimeter waves through metal light pipes,” J. Opt. Soc. Am. B 13, 702–705 (1996). [CrossRef]
  3. R. E. Harris, R. L. Cappelletti, D. M. Ginsberg, “Far infrared transmission through metal light pipes with low thermal conductance,” Appl. Opt. 5, 1083–1084 (1966). [CrossRef] [PubMed]
  4. E. V. Loewenstein, D. C. Newell, “Ray traces through hollow metal light-pipe elements,” J. Opt. Soc. Am. 59, 407–414 (1969). [CrossRef]
  5. For the square pipes Cartesian coordinates were used in place of the polar coordinates, r and α.
  6. R. M. A. Azzam, N. M. Bashara, Ellipsometry and Polarized Light (Elsevier, New York, 1992), pp. 26–34.
  7. A Gaussian distribution is accomplished by weighting the uniform distribution by wr=exp-r22σ2, where σ is the standard deviation of the distribution.
  8. H. E. Bennett, J. M. Bennett, “Validity of the Drude theory,” in Optical Properties and Electronic Structure of Metals and Alloys, F. Abelès, ed. (North-Holland, Amsterdam, 1966), pp. 175–175.
  9. L. Muldawer, H. J. Goldman, “Optical constants of beta-brass alloys,” in Optical Properties and Electronic Structure of Metals and Alloys, F. Abelès, ed., (North-Holland, Amsterdam, 1966), pp. 574–574.
  10. G. K. White, Experimental Techniques in Low-Temperature Physics (Oxford U. Press, Toronto, 1959), pp. 298–298.

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