Optimization of symmetrical free-shape non-imaging concentrators for LED light source applications

Sergey Kudaev; Peter Schreiber

doi:10.1117/12.618795

20 August 2005 Optimization of symmetrical free-shape non-imaging concentrators for LED light source applications

Sergey Kudaev, Peter Schreiber

Proceedings Volume 5942, Nonimaging Optics and Efficient Illumination Systems II; 594209 (2005) https://doi.org/10.1117/12.618795
Event: Optics and Photonics 2005, 2005, San Diego, California, United States

Abstract

Successful design of LED light sources requires application of principles of non-imaging optics and their integration into optical design software. We propose some design tools for CPC-like concentrators, which are flexible to cover both different LED types and diverse applications of LED for illumination. The methods are based on the optimization using standard ray-tracing either according to the edge-ray principle (with special ray aiming and integration over the projected images) or a Monte-Carlo procedure (with number of rays, sufficient for resolving concentrator features). The algorithms take skew rays into consideration, what results in 5...15% higher efficiency compared to concentrators designed according to the theoretical CPC equation. The specifics of optimization algorithms (compared with conventional imaging optical design algorithms) are discussed. We also propose different optimization criteria, specific for diverse light source configurations. Examples of solid and hollow concentrators, optimized for efficiency or light intensity were manufactured by single point diamond turning. Measured characteristics of devices are in good agreement with the design goals.

Citation Download Citation

Sergey Kudaev and Peter Schreiber "Optimization of symmetrical free-shape non-imaging concentrators for LED light source applications", Proc. SPIE 5942, Nonimaging Optics and Efficient Illumination Systems II, 594209 (20 August 2005); https://doi.org/10.1117/12.618795

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

Includes PDF, HTML & Video, when available