Double Convex Spherical Lenses: +20D, FL:50mm – Pack of 5

Spherical Lenses: Double Convex

With optically worked faces and ground edges, for educational purposes.

• Diameter: 38mm
• Focal Length: 50mm,
• Power: +20D
• Refractive index: 1.52 approx.
• Material: Float Glass
• Pack of 5