基于单色LED的阵列光谱辐射计光谱响应度校准方法
By calibrating the spectroradiometer in peak wavelength order using monochrome LEDs, a spectral irradiance responsivity calibration file covering the entire visible light range is generated, solving the problem of responsivity calibration distortion caused by stray light interference and improving calibration accuracy and measurement accuracy.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- NATIONAL INSTITUTE OF METROLOGY CHINA
- Filing Date
- 2026-02-06
- Publication Date
- 2026-07-17
AI Technical Summary
During the calibration process of existing spectroradiometers, stray light interference causes responsivity calibration distortion, especially in single-grating or array detector type spectroradiometers. It is difficult to suppress internal stray light by adding filters, and matrix correction methods increase costs and reduce measurement speed.
A set of monochromatic LEDs is used as the calibration light source, lit in order of increasing peak wavelength. After each calibration, an original calibration file is generated. By calculating the normalization coefficient, a complete spectral irradiance response calibration file covering the 380-780 nm band is obtained by splicing the files, thus reducing the influence of internal stray light.
It significantly improves the accuracy of spectral responsivity calibration, reduces the influence of stray light, and significantly improves the accuracy of measurement results, especially when measuring at the blue end, thus mitigating measurement deviations caused by low detector responsivity.
Smart Images
Figure CN121702543B_ABST