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High and Low Precision BK7 Windows

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High Precision BK7 Windows ( 20-10, Lambda/10 grade)

 
    Specifications Material: BK7 grade A optical glass Diameter Tolerance: +0.0, -0.1mm Thickness Tolerance: ± 0.2mm Clear Aperture: >80% Parallelism: see the table Surface Quality: 20-10 scratch and dig Wavefront Distortion:...[more]

Standard Grade BK7 Windows

 
    Specifications Material: BK7 grade A optical glass Diameter Tolerance: +0.0, -0.1mm Thickness Tolerance: ± 0.2mm Clear Aperture: >80% Parallelism: 1' Surface Quality: 60-40 scratch and dig Wavefront Distortion: l per 25mm...[more]