Lenses: Plano-Convex +7D, FL:140mm – Pack of 5

Plano-Convex Lenses made from clear glass with ground edges & optically worked faces, for educational purposes.

• Diameter: 50mm
• Focal Length: 140mm
• Power: +7D
• Refractive Index: 1.52 approx.
• Material: Float Glass
• Pack of 5