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H-K9L(N-BK7) Glass Window

H-K9L (N-BK7) has excellent transmittance from visible to near-infrared (350-2000nm), and is the most commonly used optical glass for high-quality optical elements. With its advantages of good optical homogeneity, stability, cheapness, glass Windows are widely used in optical systems of equipment and instruments

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H-K9L (N-BK7) has excellent transmittance from visible to near-infrared (350-2000nm), and is the most commonly used optical glass for high-quality optical elements. With its advantages of good optical homogeneity, stability, cheapness, glass Windows are widely used in optical systems of equipment and instruments


Parameter

Tolerance ±0.05mm  
Surface accuracy: 1/2λ,λ/4 per φ25.4mm
S/D: 60-40, 40-20, 20-10,10-5
Chamfer: 0.2-0.3mm×45°
CA: >90%


H-k9l (n-bk7) is commonly used as a protective device for electronic sensors, optical lenses, and laser processing heads


"Quality first, customer first, development and innovation"
Nanjing April Electro-Optics Ltd. founded in 2012, is specialized in high-precision cold processing of crystal materials, with sapphire, quartz and optical glass as raw materials. Core products including window, lens, crystal rod, prism, ball, filter, cylindrical mirror, ball cover, and so forth. 

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