Polaroid diploscope

Polarizing diploscope is a diploscope of the Polish inventor Tabernersky, built on the difference in the polarization of the light image resulting from the reflection of a reflected object. The operating principle of a diplomoscope is based on the difference in polarization angles when light is reflected from the interface of two dielectrics that have different refractive indices (for example, air and glass). When illuminated by a diploscope's white light source, multilayer Polaroid film allows one to distinguish the right and left halves of the visual field separately. This image cannot be replaced by astigmatism. Works only with thin and light objects of small size, but has significant speed.