Compact high-flux two-stage solar collectors based on Tailored Edge-Ray concentrators

Robert P. Friedman, J. M. Gordon, Harald Ries

Research output: Contribution to journalConference articlepeer-review

2 Scopus citations


Using the recently-invented Tailored Edge-Ray Concentrator (TERC) approach for the design of compact two-stage high-flux solar collectors - a focusing primary reflector and a non-imaging TERC secondary reflector - we present: (1) a new primary reflector shape based on the TERC approach and a secondary TERC tailored to its particular flux map, such that more compact concentrators emerge at flux concentration levels in excess of 90% of the thermodynamic limit; and (2) calculations and raytrace simulation results which demonstrate that V-cone approximations to a wide variety of TERCs attain the concentration of the TERC to within a few percent, and hence represent practical secondary concentrators that may be superior to corresponding Compound Parabolic Concentrator or trumpet secondaries.

Original languageEnglish
Pages (from-to)30-41
Number of pages12
JournalProceedings of SPIE - The International Society for Optical Engineering
StatePublished - 21 Aug 1995
EventNonimaging Optics: Maximum Efficiency Light Transfer III 1995 - San Diego, United States
Duration: 9 Jul 199514 Jul 1995


  • Compact
  • Concentrator
  • High-flux
  • Non-imaging
  • Solar energy
  • Tailored Edge-Ray
  • Thermodynamic limit
  • V-cone


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