Title: Study on a system for LED's photometric and colorimetric measurement based on a multi-channel spectrometer
Abstract: Ab stract: -Light Emitting Diode (LED) is quite different from traditional light sources in many aspects. In this paper the practical aspects of LED’s measurement and problems are discussed. An integrating sphere system is designed and implemented for LED measurement based on a multi<channel spectrometer. The principle and procedure of the measurement are presented, and then the measurement errors are analyzed. The spectrometer uses a Self<scanning Photodiode (SPD) Array device as the detector which has 256 pixels and ultra<high sensitivity. The system can fulfil fast and accurate measurement for LED’s photometric and colorimetric quantities such as total luminous flux, Color Temperature, Color Rending Index (CRI) and color coordinate. This method can avoid the measurement errors by self<absorption effect and mismatch of V (λ).
Publication Year: 2008
Publication Date: 2008-01-01
Language: en
Type: article
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Cited By Count: 3
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