A black body light source with adjustable color temperature and its color temperature adjustment method

Abstract

The invention provides a black body light source with the adjustable color temperature. The black body light source comprises a large integrating sphere, a small integrating sphere, a xenon lamp light source, an optical beam splitter, halogen tungsten lamp light sources, light selection assemblies, iris diaphragms, a spectrum collection system and a master control system. The large integrating sphere and the small integrating sphere are connected through the iris diaphragms. The xenon lamp light source is connected with the large integrating sphere through the optical beam splitter. The halogen tungsten lamp light sources are connected with the large integrating sphere. Some light selection assemblies are arranged between the optical beam splitter and the large integrating sphere, and the other light selection assemblies are arranged between the halogen tungsten lamp light sources and the large integrating sphere. The spectrum collection system is arranged below a light outlet of the small integrating sphere. The master control system is connected with the light selection assemblies, the spectrum collection system, the xenon lamp light source and the halogen tungsten lamp light sources. The invention further provides a color temperature adjusting method for the black body light source with the adjustable color temperature. The black body light source with the adjustable color temperature can be operated accurately, reliably and conveniently.

Description

technical field [0001] The invention belongs to the field of optical detection, and relates to a blackbody light source with adjustable color temperature and a color temperature adjusting method thereof, in particular to an adjustable light source aiming at 300nm-1100nm approximate absolute blackbody Planck curve and a color temperature adjusting method thereof. Background technique [0002] Light is emitted by a light source. Any substance that can emit various electromagnetic radiations such as ultraviolet rays, visible light, and infrared rays can be called a light source, which can be divided into natural light sources and artificial light sources. Common natural light sources include sunlight, day sky, night sky, moon and stars, etc. The range of artificial light sources is wider, including thermal radiation or temperature radiation light sources, gas discharge light sources, solid light sources, lasers, etc., as well as candles. , oil lamps, flames, arcs, etc. are als...

AI Technical Summary

Problems solved by technology

However, this method still uses two different color temperature spectral bands for color temperature matching, and cannot output continuous spectral line shapes such as the absolute blackbody spectral lines of Planck's formula.

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