Quick Answer: The Set of Three Lenses contains 3 plexiglass lenses in convex and concave forms for refraction and ray optics practicals. Students trace how each lens converges or diverges light from a ray box and locate its focal point.
Last updated: October 2026
Key Features
3 lenses in plexiglass, a transparent acrylic-type material
Convex and concave forms bend light in opposite ways
Placed on a white sheet or in a lens holder in front of a ray box or LED light source
The approximate focal length can be marked from the traced rays
Technical Specifications
Specification
Value
Set includes
3 plexiglass lenses
Material
Plexiglass / transparent acrylic-type optical material
Primary use
Study of refraction, focal length, image formation and ray optics
About This Product
With three lenses to compare, a class can see at once that some shapes draw rays together and others spread them apart. Tracing those paths onto paper and marking where the rays meet gives a hands-on route into focal points, ray diagrams and how lenses work inside optical instruments.
Frequently Asked Questions
Are the lenses in the Set of Three Lenses glass or plastic?
They are plexiglass, a transparent acrylic-type material, which keeps them light for repeated classroom use.
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