OSA's Digital Library

Applied Optics

Applied Optics


  • Vol. 41, Iss. 7 — Mar. 1, 2002
  • pp: 1267–1276

Ideal concentrators with gaps

Julio Chaves and Manuel Collares-Pereira  »View Author Affiliations

Applied Optics, Vol. 41, Issue 7, pp. 1267-1276 (2002)

View Full Text Article

Enhanced HTML    Acrobat PDF (278 KB)

Browse Journals / Lookup Meetings

Browse by Journal and Year


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools



Ideal concentrators with large gaps are presented. These new devices use optical elements surrounding the receiver. When their number is large, they (may) constitute a microstructure (many components with small sizes). Smaller gaps can also be achieved by use of a fewer number of optics. Different ways to combine these optical elements are presented for the case of larger and smaller gaps. Designs that use mirrors and total internal reflection are also presented for the case of larger gaps. The mathematical methods used to calculate the shape of the optics are outlined. In spite of the fact that the number of optics may be large, given the symmetries inherent to these designs, the elements in these microstructures are all equal. This is a simplifying feature that is important for their design and eventual production in the future.

© 2002 Optical Society of America

OCIS Codes
(060.2270) Fiber optics and optical communications : Fiber characterization
(060.2280) Fiber optics and optical communications : Fiber design and fabrication
(060.2290) Fiber optics and optical communications : Fiber materials
(060.2300) Fiber optics and optical communications : Fiber measurements
(060.2400) Fiber optics and optical communications : Fiber properties

Original Manuscript: November 13, 2000
Revised Manuscript: July 11, 2001
Published: March 1, 2002

Julio Chaves and Manuel Collares-Pereira, "Ideal concentrators with gaps," Appl. Opt. 41, 1267-1276 (2002)

Sort:  Author  |  Year  |  Journal  |  Reset  


  1. W. T. Welford, R. Winston, The Optics of Nonimaging Concentrators, Light and Solar Energy (Academic, New York, 1978).
  2. P. T. Ong, J. M. Gordon, A. Rabl, W. Cai, “Tailored edge-ray designs for uniform illumination of distant targets,” Opt. Eng. 34, 1726–1737 (1995). [CrossRef]
  3. P. T. Ong, J. M. Gordon, A. Rabl, “Tailored edge-ray designs for tubular sources,” Appl. Opt. 35, 4361–4371 (1996). [CrossRef] [PubMed]
  4. R. Winston, H. Hinterberger, “Principles of cylindrical concentrators for solar energy,” Sol. Energy 17, 255–258 (1975). [CrossRef]
  5. A. Rabl, N. B. Goodman, R. Winston, “Practical design considerations for CPC solar collectors,” Sol. Energy 22, 373–381 (1979). [CrossRef]
  6. W. R. McIntire, “New reflector design which avoids losses through gaps between tubular absorber and reflector,” Sol. Energy 25, 215–220 (1980). [CrossRef]
  7. R. Winston, “Cavity enhancement by controlled directional scattering,” Appl. Opt. 19, 195–197 (1980). [CrossRef] [PubMed]
  8. M. Collares-Pereira, “A novel bifacial fin CPC concentrator for thermal application up to 100 °C,” Sun at Work in Europe (1992).
  9. M. Collares-Pereira, M. J. Carvalho, J. Farinha Mendes, J. Oliveira, A. Harberle, V. Wittier, “Optical and thermal testing of a new 1.12X CPC solar collector,” Sol. Energy Mater. Sol. Cells 37, 175–190 (1995). [CrossRef]
  10. Ao Sol, Energias Renováaveis, Lda Edificio Petrogal, Parque Industrial do Porto Alto Porto Alto—Lugar de Sesmaria Limpa, Apartado 173, 2135-402 Samora Correia, Portugal, http://www.aosol.pt .
  11. P. Benı́tez, R. Garcı́a, J. C. Miñano, “Contactless efficient two-stage solar concentrator for tubular absorber,” Appl. Opt. 36, 7119–7128 (1997). [CrossRef]
  12. H. Ries, J. Mushaweck, “Maximum gap of ideal concentrators for cylindrical absorbers,” in Nonimaging Optics: Maximum Efficiency Light Transfer V, R. Winston, ed., Proc. SPIE3781, 120–123 (1999). [CrossRef]
  13. H. Ries, J. Mushaweck, “Double-tailored microstructures,” in Nonimaging Optics: Maximum Efficiency Light Transfer V, R. Winston, ed., Proc. SPIE3781, 124–128 (1999). [CrossRef]
  14. D. Feuermann, J. M. Gordon, H. Ries, “Nonimaging optical designs for maximum-power-density remote irradiation,” Appl. Opt. 37, 1835–1844 (1998). [CrossRef]
  15. R. Winston, Harald Ries, “Nonimaging reflectors as functionals of the desired irradiance,” J. Opt. Soc. Am. A 10, 1902–1908 (1993). [CrossRef]
  16. H. Ries, R. Winston, “Tailored edge-ray reflectors for illumination,” J. Opt. Soc. Am. A 11, 1260–1264 (1994). [CrossRef]
  17. J. Chaves, M. Collares-Pereira, “Ultra flat ideal concentrators of high concentration,” Sol. Energy 69, 269–281 (2000). [CrossRef]
  18. 3M has a mirror called an enhanced specular reflector with a reflectivity of ∼98%. It has not been commercialized yet.
  19. W. T. Welford, R. Winston, High Collection Nonimaging Optics (Academic, New York, 1989).
  20. J. M. Gordon, “Simple string construction method for tailored edge-ray concentrators in maximum-flux solar energy collectors,” Sol. Energy 56, 279–284 (1996). [CrossRef]
  21. M. Collares-Pereira, J. F. Mendes, A. Rabl, H. Ries, “Redirecting concentrated radiation,” in Nonimaging Optics: Maximum Efficiency Light Transfer III, R. Winston, ed., Proc. SPIE2538, 131–135 (1995). [CrossRef]
  22. X. Ning, R. Winston, J. O’Gallagher, “Dielectric totally internally reflecting concentrators,” Appl. Opt. 26, 300–305 (1987). [CrossRef] [PubMed]
  23. R. P. Friedman, J. M. Gordon, “Optical designs for ultrahigh-flux infrared and solar energy collection: Monolithic dielectric tailored edge-ray concentrators,” Appl. Opt. 35, 6684–6691 (1996). [CrossRef] [PubMed]
  24. A. Rabl, J. M. Gordon, “Reflector design for illumination with extended sources: The basic solutions,” Appl. Opt. 33, 6012–6021 (1994). [CrossRef] [PubMed]

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