Crossed Polarizer Transmission

How to use this tool

1. Estimate ideal transmission through a second polarizer at a chosen relative angle.
2. Set already polarized input power, relative axis angle in the indicated units.
3. Calculate and compare transmitted power, transmission.

Try this example

{
  "power": 100,
  "angle": 60
}

Accuracy and scope

Ideal Malus law for already linearly polarized light; real polarizer losses and extinction ratio are excluded.

Is my data uploaded?

This tool runs locally in your browser. Input and output are not sent to a processing server. Copy or download your result before leaving the page.