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BK7, Fused silica
BK7(K9), Fused silica(JGS1,JGS2,JGS3)

Used for windows, lenses, prisms and mirror substrates.

BK7 is a borosilicate crown optical glass with high homogeneity and low bubble and inclusion content. Its good physical and chemical properties make it widely used in visible NIR windows, lenses and prisms.


Transmission range:330nm-2100nm
Thermal Expansion Coefficient:7.5x10-6/K
Density:2.51g/cm3

 

Fused silica is formed by Chemical combination of silica material include good UV and IR transmission, low coefficient of thermal expansion, providing stability and resistance to thermal operating range and high laser damage threshold. Used for windows, lenses, prisms and mirror substrates.

Transmission range:185nm-2500nm
Thermal Expansion Coefficient:0.54x10-6/K
Density:2.20g/cm3

 
 
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