The effect of a polarization filter

A polarization filter transmits only a light wave in a specified direction. Regular reflections from a glossy surface can be eliminated when polarization filters are mounted on the lens and the illuminator as shown in the illustration.

Principle

The light 1 is polarized with the polarization filter A and becomes light 2. The glass surface specularly reflects light 2. The specular reflection 3 is intercepted by the polarization filter B while the target surface diffusely reflects light 4. The diffuse reflection 4 is polarized by the polarization filter B and only the polarized light 5 enters into the camera.

Without polarization filter The CD case reflects the illumination.

With polarization filter The polarization filter reduces the reflection.

Polarization filter
OP-54030

Polarization filter
OP-54029

Polarization filter
OP-51603

For glare prevention

Eliminates glare of glossy targets together with the lens polarizing filter. (Compatible with direct-ring ilght and bar ilghts)

» Protection Filter

Polarizer