We present a family of three-dimensional concentrators constructed from the photic field generated by a Lambertian emitter. The profile of these concentrators is obtained from the field lines for a two-dimensional truncated wedge and is based on the union between a hyperbola and a tilted parabola. By revolution of this profile, we obtain hyperparabolic concentrators (HPCs). In the limiting case when the focal length of the hyperbola becomes the radius of the exit aperture, the HPC becomes the well-known compound parabolic concentrator. On the other hand, when the focal length of the hyperbola becomes infinite, the HPC achieves the thermodynamic limit of concentration.
© 2009 Optical Society of America
Optical Design and Fabrication
Original Manuscript: November 7, 2008
Manuscript Accepted: December 10, 2008
Published: January 23, 2009
Angel García-Botella, Antonio Álvarez Fernández-Balbuena, Daniel Vázquez, Eusebio Bernabeu, and Agustín González-Cano, "Hyperparabolic concentrators," Appl. Opt. 48, 712-715 (2009)