Linear Polarizer or Linear Polarizer Filter
Dimensions: 26mm x 28mm
Polarization axis: 45 degrees (standard for 3d projection).

Specially designed for the regulation of laser power:
The use of 2 linear polarizers allows the regulation of output power of the lasers.
The regulation of the intensity of light is obtained by the optical assembly of 2 linear polarizers at the light output. The relative rotation of the polarizers will change the intensity of the light.
In the case of having a laser with linearly polarized light output, it is only necessary to use a linear polarizer.