400-700nm Visible BK7 Windows

Featured Product from Changchun Yutai Optics Co., Ltd.

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Comparison of basic characteristics between BK7 and K9

Characteristic
BK7 K9

Material Type

Borosilicate glass (German Schott Brand)

Chinese standard optical glass

International Corresponding Brand
Schott BK7, Ohara S-BSL7 Chinese GB standard; composition similar to BK7

Main Ingredient
SiO? + B?O? + K?O SiO? + B?O? + K?O



What is the role of the BK7 (K9) window in the visible wavelength?
Use: protect sensitive optical components (sensors, detectors, lenses) from dust, moisture or mechanical damage.
For example: laboratory instruments (microscopes, spectrometers), industrial cameras, surveillance cameras, laser printers, scanners.