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How polarizers can remove surface reflections?

There is a simple method of using two perpendicular polarization films. The angle on which light should fall is called Bruster’s angle. This is an angle when incident polarized light is turned 90 degrees when it is reflected.

Bruster's angle

The system of imaging looks as follows: 

Taking pictures with polarizers

And here you can see results where photos are made with the polarizer system and without it.

1) Without polarizers:

reflective picture without polarizer

2) With polarizers:

picture taken with polarizers

As you can see, using two perpendicular polarizer filters remove surface reflections that give a better view of skin structure. This is a handy procedure for images being processed digitally.

One Comment:

  1. Brewster’s angle (also known as the polarization angle) is an optical phenomenon named after the Scottish physicist, Sir David Brewster (1781–1868).

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