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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
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