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Union Optic can supply many optical materials, like colorless optical glasses, color glasses, infrared materials, UV materials and also optical crystals.

Usually, the material we used is Chinese material unless specified. If you can not confirm which material is the right one, please contact us.

All the material we provided are RoHS Compliant!


The frequently used material is listed as below.

MaterialsRefractive IndexTransmission Range(um)Thermal Expansion Coefficient (10-6/K)Density(g/cm3)
BK71.5164(588nm)0.33-2.17.52.52
Fused Silica1.4858(308nm)0.185-2.50.582.20
Crystal Quartz

no=1.5427
ne=1.5518
(633nm)

0.20-2.513.2||a; 7.1||c2.65
CaF21.399(5000nm)0.17-7.818.853.18
MgF2

no=1.3836

ne=1.3957

(405nm)

0.10-7.013.7||a; 8.48||c3.17
Sapphire1.755(1000nm)0.18-4.58.43.98
Silicon3.426(5000nm)1.2 -7.02.552.33
Germanium4.004 (10000nm)2.0-14.05.55.33
ZnSe2.4028(10600nm)0.55-19.07.65.27
YVO4

no=1.9500

ne=2.1554

(1300nm)

0.50-4.04.43||a; 11.37||c4.22
Calcite

no=1.6557

ne=1.4852

(633nm)

0.35-2.35.68||a; 24.39||c2.7
a-BBO

no=1.6749

ne=1.5555

(532nm)

0.19-3.54.0||a; 36.0||c3.85
LiNbO3

no=2.2863

ne=2.2027

(633nm)

0.37-4.514.8||a; 4.1||c4.64


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