SY-820PT Quartz glass plano convex lens, Optical lens, Flat convex lens, dia:25.4mm, f:40.0mm

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Amazon.com Price: $53.50 (as of 12/27/2020 20:46 PST- Details)

Description

Quartz glass plano-convex lens 
Materials: UV quartz glass 
Diameter: 25.4mm
Deviation of Diameter: +0.0 / -0.20 
Aperture:> 90%  
Focal Length (f ‘): 40.0mm
Deviation of Focal length(Df): ± 2.0% 
Back focal length(fb): 35.48
Thickness of center(Tc): 6.6
Deviation of  thickness of center(DTc): ± 0.1
Thickness of edge (Te): 1.49
Deviation of center: 3 ‘
Diaphragm: 1~5 
Local diaphragm: 0.2~0.5 
Clearing: IV stand
Coating: no coating (coated lens can be provided if needed) 
Weight: 4.7

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