Open AccessResearch of chromatic spectral peak location on confocal point sensors
Author(s) -
Yanlei Li,
Qianli Ma,
Nan Guo,
Nan Leiguang,
Cheng Wei
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1678/1/012092
Subject(s) - optics , chromatic scale , chromatic aberration , lens (geology) , wavelength , physics , spectrometer , dispersion (optics) , noise (video) , filter (signal processing) , computer science , computer vision , image (mathematics)
Chromatic confocal point sensors are used to measure the high-precision surface distance, and it’s based on the theory of chromatic dispersion and encodes the distance between the measure surface and chromatic lens. By accurately measuring the wavelength value, it indirectly calculates the distance to object surface. The accuracy of the sensor depends on the chromatic range of the lens and the resolution of the spectrograph. In this paper, the algorithm of spectral peak positioning can effectively filter kinds of noise, such as spectrometer and light source. The spectral data signal peak is extracted by Gaussian fitting method. In practice, the wavelength position can be stably detected effectively.