The polarizer has the function of shielding and transmitting the incident light, which can make one kind of transverse light or longitudinal light pass through and the other kind of light shield.

A circular polarizer is an optical element that generates circularly polarized light and is composed of a linear polarizer and a quarter-wave plate. The fast axis of the quarter-wave plate is 45° relative to the transmission axis of the linear polarizer.

Both PL (polarizer) and CPL (circular polarizer) filters are used in photography to reduce glare, increase color saturation, and improve contrast.

1. Defects inspection

With polarizer, we can see the fingerprint, dig and scratches in glass clearly.

2. Penetrate the haze

Without polaizer                       With polarizer

3. Part identification

The PN code can be recognized automatically.

Without polaizer                                      With polarizer

4. underwater detection

Without polaizer                                                 With polarizer

In general, as an important optical component, polarizer has a very wide range of applications and important significance, not only can be applied to scientific research, but also can be applied to daily life, production, science and technology, military and other fields.