LED source modeling and rayset generation from luminance maps

Peter Goldstein

doi:10.1117/12.2060255

12 September 2014 LED source modeling and rayset generation from luminance maps

Peter Goldstein

Proceedings Volume 9193, Novel Optical Systems Design and Optimization XVII; 91930H (2014) https://doi.org/10.1117/12.2060255
Event: SPIE Optical Engineering + Applications, 2014, San Diego, California, United States

Abstract

In the solid-state lighting industry, optical components are designed using simulation of Light Emitting Diodes (LEDs). The accuracy of the simulation depends on a reliable LED source model. Several commercial products measure LEDs by taking photographs and generate source models comprised of rayset dat. However, little is published about the details of how rayset data are generated, and such details are often proprietary. Optical engineers and the solid-state lighting industry can benefit from a deeper understanding of the assumptions and limitations of currently available LED measurement systems. This paper details one process for generating rayset data from a series of photographs of an LED. It also discusses the assumptions and limitations of rayset generation. The quality of a rayset is limited by mechanical precision of the measurement process, angular resolution of the measurements, and the rays4et generation algorithm.

Citation Download Citation

Peter Goldstein "LED source modeling and rayset generation from luminance maps", Proc. SPIE 9193, Novel Optical Systems Design and Optimization XVII, 91930H (12 September 2014); https://doi.org/10.1117/12.2060255

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