Supplier Homepage Instruments & Meters Optical Lens & Instrument Optical Filter China N-Bk7 Optical Glass Windows

China N-Bk7 Optical Glass Windows

Min. Order / Reference FOB Price
50 Piece	US $5.00/ Piece

Local Area:	Jian, Jiangxi, China
R&D Capacity:	OEM, ODM, Other
Payment Terms:	LC, T/T, PayPal

Usage:	Lighting, Medical, Optical
Thickness Range:	Customized
Color:	Transparent

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Product Description

N-BK7 optical glass windows

Product description:
H-K9L(N-BK7)composition: SiO2=69.13% B2O3=10.75% BaO=3.07% Na2O=10.40% K2O=6.29% As2O3=0.36%.
(BK7) optical glass has excellent mechanical properties and very low air bubbles and impurities, good scratch resistance. Because of its chemical stability, no special treatment grinding and polishing. Used in optoelectronics, microwave technology, and many other areas of diffractive optical elements.

H-K9L(BK7) propetyValueopticalRefractive index1.5168Abbe number63.96Mechanical propetyDensity2.51g/cm3Knoop hardness HK 100610kg/mm2Elasticity modulus82 x 103kN/mm2Poisson ratio μ0.21Thermal propety Softening ponit719°C Annealing point657°C Strain point624°C Thermal conductivity1.1W/m.°C Specific heat879J/kg.°C Thermal expansivity7.1x10E-6/KChemical propetyHydrolysis2ClassAcidproof1ClassAlkalineproof2Class

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