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1. Simulate D65 illumination lighting. Adopt CIE1964 supplement color system and CIE1976 (L
* a * b *) color space color difference formula.
2. Adopt d / o observation geometry lighting conditions. Diffusion ball diameter of 150 mm, 25
mm diameter of test hole, with light absorbers to eliminate the sample mirror reflected light.
3. Indication accuracy: chromaticity coordinates 0.0001, and the remaining 0.01
4. Stability of the value: After warm-up, 30min period, Δf ≤ 0.1.
5. Repetitive: RX, RY and RZ S ≤ 0.10
Chromaticity coordinates S ≤ 0.0010
R457 value S ≤ 0.10
6. Sample size: test plane no less than Φ30 mm, thickness no more than 40 mm.
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