Double Concave Lens – 50mm Diameter, 50mm Focal Length

The Double Concave Lens (50mm × FL 50mm) is a precision optical component designed for use in school physics laboratories and educational science settings. The lens is manufactured from spherical, optically true worked glass, ensuring accurate and consistent light refraction for reliable experimental results.

This double concave (diverging) lens features highly polished, ground edges to improve durability and safe handling. With a 50mm diameter and a 50mm focal length, it is well suited to classroom demonstrations and hands‑on investigations involving light rays, image formation, and optical systems.

Robust, clear, and easy to handle, this lens is ideal for repeated use in practical lessons where optical accuracy and durability are essential.

Key Features

• Double concave (diverging) lens
• Diameter: 50mm
• Focal Length (FL): 50mm
• Manufactured from optically true worked glass
• Spherical lens surface for accurate light refraction
• Ground and highly polished edges for durability and safety
• Clear glass for easy observation of light paths
• Supplied as 1 × optical glass lens

Ideal for School Science Lessons

Perfect for KS3, GCSE, and A Level physics lessons, this Double Concave Lens supports the teaching of fundamental optics concepts through practical investigation and demonstration.

• Demonstrating diverging light rays
• Teaching image formation with concave lenses
• Exploring focal length and ray diagrams
• Comparing concave and convex lens behaviour
• Supporting hands‑on experiments in optics and light

Accurate, durable, and designed for classroom use, this 50mm Double Concave Lens is an essential optical component for effective and engaging physics teaching in educational environments.