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Applied Optics

Applied Optics


  • Editor: Joseph N. Mait
  • Vol. 48, Iss. 21 — Jul. 20, 2009
  • pp: 4142–4148

Ultracompact backlight-reversed concentration optics

Ming-Chin Chien, Yu Lung Tung, and Chung-Hao Tien  »View Author Affiliations

Applied Optics, Vol. 48, Issue 21, pp. 4142-4148 (2009)

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We demonstrate a concentration scheme based on a reversed tracing concept utilizing a conventional sidelit backlighting configuration. The optical arrangement consists of a groove sheet and a wedge plate without any coating or surface treatment. The proposed layout simultaneously exhibits two main features: coupling the collimated solar radiance into a wedge plate and guiding the flux to the exit plane of the wedge plate for use in direct daylight. The measurement revealed an optical efficiency of 52% in conjunction with an inverse aspect ratio of 9.51. In addition to the two-dimensional sidelit scheme, the proposed structure can also be rotationally convolved and extended to a three-dimensional solar concentrator with a high concentration ratio, which will certainly have an impact on solar energy and other optical functions because of its simplicity and versatility.

© 2009 Optical Society of America

OCIS Codes
(220.1770) Optical design and fabrication : Concentrators
(220.2740) Optical design and fabrication : Geometric optical design
(220.4298) Optical design and fabrication : Nonimaging optics

ToC Category:
Optical Design and Fabrication

Original Manuscript: March 26, 2009
Revised Manuscript: June 20, 2009
Manuscript Accepted: June 26, 2009
Published: July 14, 2009

Ming-Chin Chien, Yu Lung Tung, and Chung-Hao Tien, "Ultracompact backlight-reversed concentration optics," Appl. Opt. 48, 4142-4148 (2009)

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