Light detection method

Abstract

A light detection method is executed by a light detection device to detect light to be detected emitted by a light source according to an input power supply, and comprises the following steps: (A) adjusting the input power supply; (B) detecting a strong light part of the light to be detected to generate a first detection signal; (C) detecting a weak light part of the light to be detected to generate a second detection signal; (D) acquiring and storing a spectrum according to the first and second detection signals; (E) determining whether a total number of spectrums of the stored spectrums is equal to a predetermined value; (F) if not, executing (A) to (E) again; (G) if so, carrying out regression analysis on the stored spectrum and the input power supply corresponding to the spectrum, and obtaining curve fitting according to a fitting method; and (H) obtaining a predicted spectrum according to the curve fitting and a third detection signal related to another to-be-detected light. The light detection method has the advantages of rapid detection and high sensitivity.

Description

technical field [0001] The invention relates to a light detection method, in particular to a light detection method with good detection sensitivity for strong light and weak light and fast detection. Background technique [0002] The existing light detection method mainly uses an array spectrometer to detect the intensity of light. However, the dynamic range of the light intensity measured by the array spectrometer used in the light detection method is affected by exposure time and light intensity. The array spectrometer performs well when used to detect strong light, but because of its low sensitivity to weak light (for example, 1 lumen), when detecting weak light, the light signal detected by the array spectrometer may be It will be buried in the noise, or the signal-to-noise ratio (S / N) of the detected optical signal is quite small, causing errors in subsequent signal analysis. [0003] Although the above-mentioned problems faced by the light detection method can be imp...

AI Technical Summary

Problems solved by technology

However, the dynamic range (Dynamic range) of the array spectrometer used in the light detection method to measure light intensity is affected by exposure time and light intensity

The array spectrometer performs well when used to detect strong light, but because of its low sensitivity to weak light (for example, 1 lumen), when detecting weak light, the light signal detected by the array spectrometer may be Will be buried in the noise, or the signal-to-noise ratio (S / N) of the detected optical signal is quite small, resulting in errors in subsequent signal analysis

[0003] Although the above-mentioned problems faced by the light detection method can be improved by increasing the exposure time of the array spectrometer, the increase in the exposure time will lead to an increase in the measurement time

Images