SJH-654C Achromatic doublet lens, Optical lens, Convex lens, dia:25.4mm, f:75.0mm
Amazon.com Price: $57.50 (as of 12/27/2020 20:46 PST- Details)
Description
Achromatic doublet lens
Materials: High quality optical glass
Diameter: 25.4mm
Deviation of Diameter: -0.05 / -0.20
Aperture:> 90%
Focal Length (f ‘): 75.0mm
Deviation of Focal length(Df): ± 2.0%
Back focal length(fb): 70.41
Thickness of center(Tc): 9.5
Deviation of thickness of center(DTc): ± 0.1
Thickness of edge (Te): 6.89
Deviation of center: 0.01
Diaphragm: 3
Local diaphragm: 0.5
Clearing: IV stand
Coating: MgF2 antireflection film
Weight: 11.1
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