The integrating sphere is an important component of the colorimeter, which largely determines the service life, measurement accuracy and long-term repeatability of the colorimeter. However, the integrating sphere is a consumable part, and various problems may occur during use . So, does the integrating sphere of the colorimeter need to be replaced? How to maintain it? This article introduces this.

CIELab and Hunter Lab are commonly used color measurement spaces for colorimeter. Both color spaces use the three parameters L, a, and b to express color, but their meanings are different. This article analyzes the difference between CIELab and Hunter Lab.

When working, the colorimeter generally relies on the CIELab color space, and outputs L, a, b values, and color difference values such as △L, △a, △b, △E after colorimetry by comparing the color difference values between the sample and the standard. This article introduces the range of L, a, b of the colorimeter and the meaning of Lab color difference values.

The glossiness of apples is one of the important appearance traits and also the main economic trait. Generally speaking, apples with good color are loved by people. However, the glossiness of apples is a difficult to measure appearance parameter and it is often impossible to accurately evaluate it with the naked eye. This article introduces the method of measuring the glossiness of apples with a curved surface gloss meter.

D65 light source is a standard light source in the D series specified by CIE, and is also the most commonly used color light source in the current standard light source box. D65 light source and D50 light source are both D series light sources, so what is the difference between D65 light source and D50 light source? This article introduces D65 light source and its difference with D50 light source.

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