Min. Order:
1
Place of origin:
China
with GB3978-83; Standard illuminator and illuminating--viewing conditions. 2. Simulate D65 illuminator to illuminate. Adopt d/o illuminating--viewing geometrical coanditions. Diameter of the diffusion sphere is 150mm and diameter of the testing hole is 25mm. 3. Light absorber is provided to eliminate the effect of specular reflection. Peak wavelength of spectral power distribution of R457 whitene
[Related Keywords : brightness meter, brightness tester, whiteness meter, blue brightness test]