Method for detecting light source calibration of standard light source coloring observation box

Abstract

The invention discloses a method for detecting light source calibration of a standard light source coloring observation box. The method comprises the steps of: sampling XYZ data of a light source through an externally connected spectrum analyzer before the coloring observation box leaves a factory; sampling RGB data of the light source through a color sensor arranged in the coloring observation box; calculating a matrix coefficient between the RGB data and the XYZ data; calculating the RGB data sampled through the color sensor and the matrix coefficient after the observation box leaves the factory and obtaining XYZ data; calculating the XYZ data and obtaining color temperature data; and calibrating the light source through the color temperature data. The measurement of the color temperature is realized by using the color sensor and a method combining a color algorithm and the calibration. In comparison with the spectrum analyzer, the method of the invention has low cost, and the measurement precision of the color temperature is accurate. The color temperature measurement in the low cost can be realized, and thus whether there is an error in the light source color temperature can be monitored in real time. If the error exits, the debugging must be performed in time, and the accuracy of the color measurement of the coloring observation box is improved.

Description

technical field [0001] The invention relates to a test method, in particular to a light source calibration and detection method of a standard light source color matching observation box. Background technique [0002] Existing standard light sources have no monitoring of parameters such as color temperature and illuminance in the color observation box. With the increase of use time, the material change of the light source component will cause the color temperature and illuminance of the irradiating light source to change without the user knowing, which will make the light source change. The user's judgment of color and identification of color difference or measurement results will vary greatly, thus affecting the production acceptance effect. [0003] At present, the most advanced standard light source color observation box in the world can only display the illuminance in real time, and the measurement error of fluorescent lamps is relatively large. To achieve the measuremen...

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Problems solved by technology

[0002] The existing standard light source does not monitor the parameters such as color temperature and illuminance in the color observation box, and as the use time increases, the material change of the light source component will cause the color temperature and illuminance of the irradiated light source to change, but the user does not know, which will make There will be great differences in the user's judgment of color and identification of color difference or measurement results, which will affect the production acceptance effect

[0003] At present, the most advanced standard light source color observation box in the world can only achieve real-time display of illuminance, and the measurement error for fluorescent lamps is relatively large. The current solution for measuring illuminance is to use the illuminance sensor to sample light signals to achieve illuminance measurement, but it cannot To achieve the measurement of color temperature, it is often necessary to measure the color temperature with high-precision spectral analysis instruments.

[0004] Because the existing standard light source color observation box lacks the monitoring of color temperature and illuminance, the user has no intuitive judgment on the accuracy and performance of the observation box, and more importantly, it will affect the development of color identification work. Usually, if you want to measure the color temperature, you often need A high-precision spectrum analyzer, but the price of the spectrum analyzer is very high, and it becomes unrealistic to install a spectrum analyzer on the light box

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