High Accuracy Array Spectrometer

With the development of techniques, the technique of Spectrum analysis has been widely used in many fields, such as research of physical chemistry basics, industrial and agriculture production, national defense, traffic and illumination. Traditional spectrometer's cubic content is large and the scanning speed is slow, so it cannot satisfy the need of current development such as measuring typical products in mass production. The High Accuracy Array Spectrometer is a trend of the spectrometer.This paper designs a High Accuracy Array Spectrometer which is based on USB2.0 interface. This spectrometer which achieves the measuring fast with high accuracy uses plane grating as spectro-grating and linear array SSPD whose operating temperature can be controlled as detection element.Firstly, this paper analyzes retrospect of the development of spectrometer and the research meanings. It introduces the Spectroradiometric method which is based on the related paper of CIE and dispersion system, analyzes the SSPD, and designs a method to remove stray light and noise by controlling the optical filter and software algorithm.Then, the hardware and software are introduced detailedly. This dissertation proposes a new method to get the integration time automatically and fast with high accuracy. To enough the different needs, in measuring, there are two methods, fast measuring and high accuracy measuring, to select.At last, the calibration of spectrum and respone is introduced, and the measurement uncertainties in the color measurement of LEDs by spectroradiometric method are emulated. The results measured by this system are with high accuracy by contrasting with the emulation. This system, which is 0.001 in color uncertainty, is very good in linearity and repeatability.