Freeform lens design to achieve 1000X solar concentration with a parabolic trough reflector

Brian Wheelwright, J Roger P Angel, Blake Coughenour

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

Line-focus parabolic trough mirrors for solar thermal generation cannot produce the high concentration required for concentrating photovoltaic (CPV) systems. We describe a freeform lens array with toroidal symmetry which intercepts the low-concentration line focus to produce a series of elongated, high-concentration foci. The design employs 2D K.hler illumination to improve the acceptance angle in one direction. The two-stage concentrator has 1000X average geometric concentration with an acceptance angle of +/-1.49° in the azimuthal direction and +/-0.29° in the elevation direction. Preliminary results of a prototype roll-forming process are shown in thermoplastics and B270 glass.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
PublisherSPIE
Volume9293
ISBN (Print)9781628413786
DOIs
StatePublished - 2014
EventInternational Optical Design Conference 2014, IODC 2014 - Kohala Coast, United States
Duration: Jun 23 2014Jun 26 2014

Other

OtherInternational Optical Design Conference 2014, IODC 2014
CountryUnited States
CityKohala Coast
Period6/23/146/26/14

Fingerprint

Lens Design
lens design
Reflector
troughs
Thermoplastics
reflectors
Lenses
Lighting
Glass
acceptability
roll forming
concentrators
concentrating
Angle
Photovoltaic System
Concentrator
Line
low concentrations
Intercept
illumination

Keywords

  • Concentrators
  • Freeform
  • Nonimaging optics
  • Parabolic trough
  • Solar energy

ASJC Scopus subject areas

  • Applied Mathematics
  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Wheelwright, B., Angel, J. R. P., & Coughenour, B. (2014). Freeform lens design to achieve 1000X solar concentration with a parabolic trough reflector. In Proceedings of SPIE - The International Society for Optical Engineering (Vol. 9293). [929316] SPIE. https://doi.org/10.1117/12.2076091

Freeform lens design to achieve 1000X solar concentration with a parabolic trough reflector. / Wheelwright, Brian; Angel, J Roger P; Coughenour, Blake.

Proceedings of SPIE - The International Society for Optical Engineering. Vol. 9293 SPIE, 2014. 929316.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Wheelwright, B, Angel, JRP & Coughenour, B 2014, Freeform lens design to achieve 1000X solar concentration with a parabolic trough reflector. in Proceedings of SPIE - The International Society for Optical Engineering. vol. 9293, 929316, SPIE, International Optical Design Conference 2014, IODC 2014, Kohala Coast, United States, 6/23/14. https://doi.org/10.1117/12.2076091
Wheelwright B, Angel JRP, Coughenour B. Freeform lens design to achieve 1000X solar concentration with a parabolic trough reflector. In Proceedings of SPIE - The International Society for Optical Engineering. Vol. 9293. SPIE. 2014. 929316 https://doi.org/10.1117/12.2076091
Wheelwright, Brian ; Angel, J Roger P ; Coughenour, Blake. / Freeform lens design to achieve 1000X solar concentration with a parabolic trough reflector. Proceedings of SPIE - The International Society for Optical Engineering. Vol. 9293 SPIE, 2014.
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