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BK7 is an excellent general purpose material widely used in visible and NIR optical components. BK7 is a borosilicate crown optical glass.

Transmission Range: 330nm~2100nm

Thermal Expansion Coefficient: 7.5X10-6 /K

Density: 2.52 g/cm3

We default to use CDGM H-K9L to substitute BK7 material. H-K9L is the Chinese equivalent material of N-BK7. Please click here to view the detailed datasheet of H-K9L.

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