Secondary Reflectors for Solar Collectors and Methods of Making the Same

Guangdong Zhu (Inventor)

Research output: Patent


A secondary reflector for receiving light from a plurality of primary reflectors that includes a reflecting surface having a length aligned along a first axis (z), where a cross-section of the reflecting surface in a plane perpendicular to the first axis (z) forms a curve comprising a concave section positioned between a first endpoint and a second endpoint, at least a portion of the concave section is accurately approximated by a polynomial equation, an aperture is formed by a straight line connecting the first endpoint to the second endpoint, and the concave section is configured to focus a plurality of beams of light passing through the aperture onto a focal point.
Original languageAmerican English
Patent number11,644,219 B2
Filing date9/05/23
StatePublished - 2023

NREL Publication Number

  • NREL/PT-5700-86266


  • concave section
  • plane perpendicular
  • polynomial equation


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