Study of Spectral Property and Measurement of Linear Variable Filters
LIU Qing1, 2, ZHOU Jin-song1, NIE Yun-feng1, 2, LI Yang1, ZHANG Gui-feng1
1. Key Laboratory of Computational Optical Imaging Technology, Academy of Opto-Electronics, Chinese Academy of Sciences, Beijing 100094, China 2. University of Chinese Academy of Sciences, Beijing 100049, China
Abstract：Linear variable filters(LVF) are widely used in a variety of small rapid spectrometric detecting devices. In the present paper, the splitting property of LVF was studied, and the spectral-property expression in Gaussian form was given, and the relationship between indexes of expression and LVF center transmission, width of spectrum，and linear dispersion was specified. Measurement based on monochromator for imaging spectrometers calibration was introduced, the sensitivity for detection system was discussed, and the tolerance was analyzed. It was shown that the slit displacement of monochromator relative to the optical axle and the slope of LVF affect the detecting accuracy most, and the tolerance can be reduced by adjustment of optical path and structure to reach requirement. System was built and the detection for spectral property of sample LVF was made. The result of data processing indicates that MSE for center transmission detection was lower than 0.05%, and the accuracy of this method was proved. Reference-parameters of relevant system designing and calibrating based on the LVF can be provided by this method.
柳 青1, 2，周锦松1，聂云峰1,2，李 杨1，张桂峰1 . 线性渐变滤光片光谱分光特性及检测方法研究 [J]. 光谱学与光谱分析, 2015, 35(04): 1142-1145.
LIU Qing1, 2, ZHOU Jin-song1, NIE Yun-feng1, 2, LI Yang1, ZHANG Gui-feng1 . Study of Spectral Property and Measurement of Linear Variable Filters . SPECTROSCOPY AND SPECTRAL ANALYSIS, 2015, 35(04): 1142-1145.
