Technical Reports and Guides

CIE 226:2017

CIE 226:2017

High-Speed Testing Methods for LEDs

standard by Commission Internationale de L'Eclairage, 08/01/2017

FormatLanguagePriceAvaliablity
Secure PDF English € 135.00 EUR Immediate Download
Printed Edition English € 135.00 EUR Ships in 1-2 business days
Printed Edition + PDF English € 182.00 EUR Immediate Download

上列價格為CIE國際定價,向CIE-Taiwan訂購可享折扣優惠,CIE-Taiwan會員更享有會員優惠價,歡迎來電03-5743875或e-mail : cie_taiwan@itri.org.tw 洽詢。

Full Description

There are significant differences between LED packages or LED chips and conventional light sources which require measurements under specific measurement conditions.

The absence of a heat sink allows only to use short current pulses for the optical measurements in order to avoid significant heating of the device under test. The readings under these pulsed conditions can be converted into values under the final application conditions e.g. by using the corresponding datasheet information. The high-speed measurement procedures necessary for high-volume production testing require also special measurement configurations. These are based on the recommendations of the Technical Report CIE 127:2007 or should at least be traceable back to these.

This report describes in detail the measurement procedures and configurations that can be used to perform high-speed measurements on LED packages and LED chips. Specific properties of LEDs which need to be considered (e.g. current and temperature dependency of electrical and optical properties) are also highlighted.

The publication is written in English, with a short summary in French and German.

Product Details

Published:08/01/2017

ISBN(s):9783902842695

Number of Pages:42

File Size:1 file , 2MB





 

CIE 225:2017

CIE 225:2017

Optical Measurement of High-Power LEDs

standard by Commission Internationale de L'Eclairage, 08/01/2017

FormatLanguagePriceAvaliablity
Secure PDF English € 135.00 EUR Immediate Download
Printed Edition English € 135.00 EUR Ships in 1-2 business days
Printed Edition + PDF English € 182.00 EUR Immediate Download

上列價格為CIE國際定價,向CIE-Taiwan訂購可享折扣優惠,CIE-Taiwan會員更享有會員優惠價,歡迎來電03-5743875或e-mail : cie_taiwan@itri.org.tw 洽詢。

Full Description

Measurement results for light emitting diodes (LEDs) strongly depend on their thermal conditions. In order to achieve reproducible results with small uncertainties it is critical to accurately set and control the junction temperature of an LED during the time of optical measurement. This technical report describes the methods and procedures for measurement of high-power LEDs (HP-LEDs) under DC operation to acquire photometric, radiometric, and colorimetric quantities at a specified junction temperature.

The publication is written in English, with a short summary in French and German.

Product Details

Published:08/01/2017

ISBN(s):9783902842121

Number of Pages:48

File Size:1 file , 1.4MB