Spatial uniformity comparison of two nonimaging concentrators

Joseph P. Rice; Yuqin Zong; Daniel Dummer

doi:10.1117/1.601534

1 November 1997 Spatial uniformity comparison of two nonimaging concentrators

Joseph P. Rice, Yuqin Zong, Daniel Dummer

Author Affiliations +

Optical Engineering, Vol. 36, Issue 11, (November 1997). https://doi.org/10.1117/1.601534

The spatial uniformity of two nonimaging concentrators is measured, each with a silicon photodetector positioned immediately behind the concentrator. The comparison is made between a compound parabolic concentrator (CPC) and a ?i/?o concentrator. The latter consists of a parabolic section followed by a cone section to restrict the divergence angle of the exit beam. The spatial uniformity of the ?i/?o concentrator measured with an f/4 beam diverging from a circular aperture is 1.2% across the central 4 mm of the entrance aperture of the concentrator, and demonstrates the use of this type of concentrator for effectively maintaining high throughput when using small-area (<2-mmdiam) detectors in applications requiring small fields of view. The uniformity of the gold-coated ?i/?o concentrator measured with a nearly collimated HeNe laser beam is not nearly as good, due in part to the imperfect reflectance of gold. The uniformity of the CPC in the f/4 beam is not nearly as good as that of the ?i/?o concentrator in the f/4 beam.

Citation Download Citation

Joseph P. Rice, Yuqin Zong, and Daniel Dummer "Spatial uniformity comparison of two nonimaging concentrators," Optical Engineering 36(11), (1 November 1997). https://doi.org/10.1117/1.601534

Published: 1 November 1997

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

;

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE