Double Concave Spherical Lenses: -5D, FL:200mm – Pack of 5 Pack of five
Spherical Lenses: Double Concave
With optically worked faces and ground edges, for educational purposes.
Diameter: 50mm
Focal Length: 200mm
Power: -5D
Refractive index: 1.52 approx.
Material: Float Glass
Pack of 5
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