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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]
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sp3 plus ltd
18 All Saints Road
Tunbridge Wells,
Kent
TN4 9JF
United Kingdom
email:info@sp3plus.co.uk
ph: +44 (0)1892 615571
fax:+44 (0)1892 615726