What are the methods for measuring color temperature?

Color temperature comparison chart

The main methods of measuring color temperature are as follows:

Color temperature meter: A color temperature meter can be used to directly measure the color temperature of a light source. Usually, the probe of the color temperature meter needs to be placed at the position of the light source to be measured, and the number on the instrument can be read.

Spectrometer: By measuring the spectral distribution of the light source, the color temperature of the light source can be calculated with high accuracy. However, spectrometers are more expensive and are generally used in professional laboratories and research fields.

Thermocouple: By measuring the thermal radiation of the light source, the color temperature of the light source can be calculated. This method has higher accuracy, but requires a relatively high technical level and professional knowledge.

Color comparison method: Compare the light source to be measured with the standard light source, and estimate the color temperature of the light source to be measured by comparing the hues of the two light sources. This method is suitable for some simple applications, but has lower accuracy.

Choosing a method for measuring color temperature needs to be determined based on actual needs and budget. For general household situations, using a color temperature meter can meet most needs. If higher-precision measurements are required, more specialized instruments such as spectrometers or thermocouples are required.