Constant temperature integrating sphere spectral analysis device

Abstract

The invention discloses a constant temperature integrating sphere spectral analysis device, comprising a sealed shell. The sealed shell is internally provided with a spectrograph and an integrating sphere; the spectrograph receives a light signal emitted from a detection window through a light sampling device; a temperature adjustment and control device is also arranged inside the sealed shell; temperature sensors are respectively arranged inside the integrating sphere and near the spectrograph; and the temperature adjustment and control device and the temperature sensors are electrically connected and used for adjusting and controlling the temperatures inside the integrating sphere, the spectrograph and the sealed shell. The constant temperature integrating sphere spectral analysis device can conveniently and effectively control the working environment temperature of the spectrograph and the temperature inside the integrating sphere, has little dependency on environment conditions of a laboratory, and realizes favorable measurement reproducibility easily and higher measurement precision.

Description

【Technical field】 [0001] The invention relates to an optical radiation measurement system, in particular to a light source spectrum analysis device. 【technical background】 [0002] The spectral analysis system of the light source is used to measure and analyze the light color parameters such as spectral power distribution, luminous flux and color of the measured light source, and is one of the most important measurement systems in the field of light radiation related to lighting. The spectral analysis system of the light source is mainly composed of a spectrometer, an integrating sphere and a computer, and usually includes a power supply and electric power measurement equipment. The measurement accuracy of the spectral analysis system is highly dependent on the external environment. On the one hand, the luminescence of the measured light source will change with the change of the surrounding environmental temperature, especially fluorescent lamps, LED lamps, etc.; on the o...

AI Technical Summary

Problems solved by technology

The measurement accuracy of the spectral analysis system is highly dependent on the external environment. On the one hand, the luminescence of the measured light source will change with the change of the surrounding environmental temperature, especially fluorescent lamps, LED lamps, etc.; on the other hand, spectral analysis The performance of various equipment in the system will also be affected by environmental conditions, especially the performance of the precision photoelectric components in the spectrometer will depend on the ambient temperature and humidity, etc. When the ambient temperature and humidity deviate greatly from the rated conditions, there will be a large measurement error

[0003] The utility model patent "light-sealed, steady-flow, temperature-controlled integrating sphere" with application number 02266985.X discloses a temperature-controlled integrating sphere, which can effectively control the temperature inside the integrating sphere, but because the sphere is exposed to the external space, the temperature inside the sphere is not enough In addition, the measuring equipment is all placed in the external space, without effective temperature control, making the measuring equipment more dependent on the environment, which is prone to large measurement errors

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