Fast and high-accuracy spectral measurements of LED by linear CCD sensor and software calibration

Donghui Wang; Hui Qian; Xin Yuan

doi:10.1117/12.577176

20 January 2005 Fast and high-accuracy spectral measurements of LED by linear CCD sensor and software calibration

Donghui Wang, Hui Qian, Xin Yuan

Proceedings Volume 5633, Advanced Materials and Devices for Sensing and Imaging II; (2005) https://doi.org/10.1117/12.577176
Event: Photonics Asia, 2004, Beijing, China

Abstract

The paper discusses practical aspects of LED measurements and problems about how to improve the measurement accuracy of LED spectral properties when using linear CCD sensor. Designed and implemented an instrument for LED spectral measurement based on linear CCD sensor. The CCD sensor has 2048 pixels and ultra-high sensitivity. The duration of one measurement is about 10ms. For reducing the effect of CCD output noise, a software filtering method is introduced. After software calibration, the accuracy of color temperature is 40K in the range of 1300K to 25000K, and accuracy of wavelength is 0.2nm in the range of 360nm to760nm. The accuracy of chromaticity coordinated (x, y) or (u, v) is better than 0.003.

Citation Download Citation

Donghui Wang, Hui Qian, and Xin Yuan "Fast and high-accuracy spectral measurements of LED by linear CCD sensor and software calibration", Proc. SPIE 5633, Advanced Materials and Devices for Sensing and Imaging II, (20 January 2005); https://doi.org/10.1117/12.577176

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