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Analogy method capable of automatically calibrating light sources with spectrums capable of being adjusted continuously and device thereof

An automatic calibration and simulation method technology, applied in the field of high-precision wide-spectrum analog light sources, can solve the problems of difficulty in ensuring the stability and high precision of analog light sources, large changes in spectral simulation accuracy, time-consuming, etc., and it is easy to achieve automatic calibration of light sources. , the effect of large spectrum simulation range and simple principle

Active Publication Date: 2015-01-07
XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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Problems solved by technology

However, the peak wavelength of the monochromatic light source will drift with the increase of its service life, driving current and operating temperature. Therefore, in this case, the spectral energy distribution simulated by the star analog light source is unstable and the accuracy is not high.
Through simulation, it can be found that small local changes in the peak wavelength will lead to large changes in the accuracy of spectral simulation, so it is difficult to guarantee the stability and high precision of the simulated light source
At the same time, the light source calibration of the current star simulation light source system is mainly manual mechanical calibration, which is not only time-consuming but also affected by certain human factors, and also affects the accuracy of light source spectrum simulation

Method used

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  • Analogy method capable of automatically calibrating light sources with spectrums capable of being adjusted continuously and device thereof
  • Analogy method capable of automatically calibrating light sources with spectrums capable of being adjusted continuously and device thereof

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Embodiment Construction

[0026] The present invention is described in detail below in conjunction with accompanying drawing and specific embodiment:

[0027] 1] Determine the type of monochromatic LED light source according to the fitting range and fitting error of the simulated spectrum. The fitting range is generally 400nm-1100nm, and the fitting error is generally 10%; generally, the smaller the peak wavelength interval of each monochromatic LED light source , the higher the precision of the fitting spectrum; for example: according to the market situation of monochromatic LEDs, choose 10nm as the interval wavelength of each peak wavelength, and get 71 kinds of monochromatic LEDs, but if the cost is considered, it can be based on the fitting error First, select LED light sources with a wavelength interval of 15nm, or even 20nm. Since the brightness of monochrome LEDs is relatively weak, based on white LEDs, the monochrome LEDs are used as compensation for spectrum fitting, and the data of each monoch...

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Abstract

The invention provides an analogy method capable of automatically calibrating light sources with spectrums capable of being adjusted continuously and a device of the method. The device comprises at least two integrating spheres different in radius. Each integrating sphere is provided with the corresponding number of LED light sources according to the adjusting range of color temperature and star magnitude. The LED light sources arranged on the integrating spheres are driven by corresponding LED light source drivers. A light outlet of each integrating sphere is provided with a spectrum detection device used for detecting light beams in real time, and a star point plate used for converting the light beams into analog fixed-star point light sources. According to the method and the device, an expected color temperature value and a star magnitude value can be directly set, and corresponding stable spectral energy distribution diagrams can be obtained immediately.

Description

technical field [0001] The invention belongs to the technical field of high-precision wide-spectrum analog light sources, and relates to a method and device based on a multi-color temperature multi-star analog light source that can be automatically calibrated and whose spectrum is adjustable, and in particular to a method based on white light LEDs with various monochromatic The invention relates to a method and a device thereof for realizing a high-precision, high-stability, wide-range analog light source which can automatically calibrate the light source for compensation, least square method, digital dimming and feedback circuit. Background technique [0002] The star simulation light source is a key component of the star simulator. With the increasing demand for the star simulator, the star simulation light source must also develop in the direction of high precision, high stability, wide range and wide application. [0003] As we all know, star simulators can be divided in...

Claims

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Application Information

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IPC IPC(8): G01J3/10
Inventor 吴璀罡李晓妮卢振华谢来运吴佳丽李鹏
Owner XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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