Measuring light emission from LEDs

Richard Young

doi:10.1117/12.692731

28 September 2006 Measuring light emission from LEDs

Richard Young

Proceedings Volume 6355, Advanced LEDs for Solid State Lighting; 63550H (2006) https://doi.org/10.1117/12.692731
Event: Asia-Pacific Optical Communications, 2006, Gwangju, South Korea

Abstract

LEDs are used in many applications, and new applications are found every day. To address this market, LEDs often come in vastly different varieties, shapes, sizes, packages and modules. Measurement of these LEDs is required so that they can be compared and selected within a global market. This paper presents the different types of optical quantity that can be measured for these LEDs together with guidelines for measurement. In particular, the protocols for measuring Averaged LED Intensity, Partial LED Flux, luminance and illuminance are presented. Some of these quantities are new, and the reader may be unfamiliar with them. Definitions are provided where appropriate. Many LED measurements have associated standard measurement conditions, which apply to LEDs and not other sources. Other measurements depend critically on setup conditions but lack standardization and hence details of methods used must accompany results. Where standard conditions exist these are detailed and where they do not advice is provided on the best methodologies. Work in establishing standard conditions is on-going, especially in Commission Internationale de l'Eclairage (CIE) technical committees, and information on this work is provided.

Citation Download Citation

Richard Young "Measuring light emission from LEDs", Proc. SPIE 6355, Advanced LEDs for Solid State Lighting, 63550H (28 September 2006); https://doi.org/10.1117/12.692731

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