Biconvex Glass Lenses – 38mm Diameter, 150mm Focal Length (Set of 20)

This high‑quality Set of 20 Biconvex Glass Lenses is ideal for school physics lessons, optical experiments, and hands‑on investigations into light behaviour. Manufactured from spherical, optically true worked glass, each lens delivers excellent clarity and precision for reliable classroom use.

The lenses feature highly polished, ground edges for safety and accuracy, making them suitable for repeated handling by students. With a 38mm diameter and a 150mm focal length (FL), these lenses are perfect for demonstrating refraction, focusing, image formation, and the properties of converging lenses.

Key Features

• Pack of 20 biconvex glass lenses
• Made from optically true, spherical worked glass
• Highly polished and ground edges for clarity and safety
• 38mm diameter lenses
• 150mm focal length – ideal for refraction and focusing experiments
• Durable and suitable for frequent classroom use
• Perfect for KS3, GCSE, and A‑Level physics lessons

Ideal for School Science Lessons

These biconvex lenses are excellent for teaching key optical concepts across KS3, GCSE, and A‑Level physics. They are ideal for:

• Demonstrating refraction and how light bends through lenses
• Exploring image formation using ray diagrams
• Investigating focal length and magnification
• Building simple telescopes, magnifiers, or camera models
• Supporting hands‑on optics experiments and STEM activities

Durable, precise, and classroom‑ready, this set of biconvex lenses provides everything needed to deliver engaging and effective lessons on the behaviour of light and the principles of optical systems.