Quick Answer: The Poloroid Disc Mounted is a polarising film disc held in a circular frame of thermoplastic or anodised metal, with an aperture of 25 mm to 50 mm. It fits 10 mm optical bench rods.
Last updated: October 2026
Key Features
Polarising polymer film on a synthetic support
Circular frame in thermoplastic or anodised metal
Aperture 25 mm to 50 mm, depending on model
Mounts on 10 mm optical bench rods
Technical Specifications
Specification
Value
Polarising element
Polarising polymer film on synthetic support
Frame
Thermoplastic or anodised metal, circular
Aperture
25 mm to 50 mm (by model)
Mounting
10 mm optical bench rod
About This Product
A mounted polariser passes light vibrating in one plane only. Used in pairs on an optical bench, the discs show extinction as one is turned against the other, and they are used to study Brewster’s angle and the coloured stress patterns seen in strained transparent plastics.
Frequently Asked Questions
Does the Poloroid Disc Mounted fit an optical bench?
Yes. The mount is made for 10 mm optical bench rods.
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