OSA's Digital Library

Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 42, Iss. 19 — Jul. 1, 2003
  • pp: 3981–3991

Spectral and Global Diffuse Properties of High-Performance Translucent Polymer Sheets for Energy Efficient Lighting and Skylights

Geoffrey B. Smith, Jacob C. Jonsson, and James Franklin  »View Author Affiliations


Applied Optics, Vol. 42, Issue 19, pp. 3981-3991 (2003)
http://dx.doi.org/10.1364/AO.42.003981


View Full Text Article

Acrobat PDF (450 KB)





Browse Journals / Lookup Meetings

Browse by Journal and Year


   


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools

Share
Citations

Abstract

A visible and near-IR spectral study is presented for a translucent smooth polymer sheet in which dopant particles are clear polymer with a refractive index close to that of the clear polymer host. Diffuse, specular, and total reflectance and transmittance and absorptance as a function of sheet thickness and dopant levels approach ideal behavior for lighting applications. A fourth optical parameter, side loss <i>S</i><sub><i>T</i></sub>, is introduced to fully account for the measured data. This covers radiation that is trapped by total internal reflection (TIR) and travels sideways sufficiently far, including to the sheet’s edges, to miss detection on exit. <i>S</i><sub><i>T</i></sub> has a strong spectral character, whereas total <i>T</i> and <i>R</i> spectra closely follow the spectrally flat wavelength dependence of the undoped clear sheet. Three distinct regimes are identified for the behavior with wavelength of the specular and diffuse components and are linked to rear surface TIR and side loss.

© 2003 Optical Society of America

OCIS Codes
(120.6200) Instrumentation, measurement, and metrology : Spectrometers and spectroscopic instrumentation
(120.7000) Instrumentation, measurement, and metrology : Transmission
(160.4760) Materials : Optical properties
(160.5470) Materials : Polymers
(290.5850) Scattering : Scattering, particles

Citation
Geoffrey B. Smith, Jacob C. Jonsson, and James Franklin, "Spectral and Global Diffuse Properties of High-Performance Translucent Polymer Sheets for Energy Efficient Lighting and Skylights," Appl. Opt. 42, 3981-3991 (2003)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-42-19-3981


Sort:  Author  |  Year  |  Journal  |  Reset

References

  1. W. E. Vargas, “Diffuse radiation intensity propagating through a particulate slab,” J. Opt. Soc. Am. A 16, 1362–1372 (1999).
  2. G. B. Smith, A. Earp, J. Franklin, and G. McCredie, “Novel high performance scattering materials for use in energy saving light fittings and skylights based on polymer pigmented with polymer,” in Solar and Switching Materials, C. M. Lampert, C.-G. Granqvist, and K. L. Lewis, eds., Proc. SPIE 4458, 10–18 (2001).
  3. C. Deller, G. B. Smith, J. Franklin, and E. Joseph, “The integration of forward light transport and lateral illumination of polymer optical fiber,” in Proceedings of the Australian Institute of Physics 15th Biannual National Congress (Australian Institute of Physics, Melbourne, 2002), pp. 307–309.
  4. H. C. van de Hulst, Light Scattering by Small Particles (Dover, New York, 1981).
  5. C. M. Sorensen and D. J. Fischbach, “Patterns in Mie scattering,” Opt. Commun. 173, 145–153 (2000).
  6. J. A. Woollam, WVASE32 ellipsometer software (J. A. Woollam Co., Inc., Lincoln, Neb., 2001).
  7. N. Lekishivili, L. Nadareishvili, G. Zaikov, and L. Khananashivili, “Polymers and polymeric materials for fiber and gradient optics,” in New Concepts in Polymer Science, J. S. Vygodsky and S. A. Samsonya, eds. (VSP, BV, Utrecht, The Netherlands, 2002).

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