Plano – concave lenses are negative spherical lenses with one concave surface and one flat surface. These lenses can be used to expand light or to increase the focal length of an optical system.
Diameter : 50.8mm
Focal Length : -200mm
Material : H-K9L
Design Wavelength : 587.6 nm
Effective Focal Length Tolerance : ± 1%
Surface Quality : 40 – 20 (scratch-dig)
Diameter Tolerance : +0.0, -0.2mm
Clear Aperture : > 90% of Diameter
Centering Tolerance : ≤3 arc min
Center Thickness, Tc : 2.5 mm
Coating : Uncoated
# Dispatch within 3 days
Model No. HO-PVL50.8-3.9
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