The full name of polarizer is polarizer, which is a polymer material composite film, which is composed of polarizing film, inner protective film, pressure-sensitive adhesive layer and outer protective film. It is mainly used for liquid crystal display. The imaging of the liquid crystal display must rely on polarizers. All liquid crystals have two polarizers in the front and back attached to the liquid crystal glass, forming a liquid crystal sheet with a total thickness of about 1mm. The lower polarizer of the LCD screen is used to convert the light beam generated by the backlight into polarized light, and the upper polarizer is used to analyze the polarized light modulated by the liquid crystal to generate a contrast between light and dark, thereby producing a display screen. If any polarizer is missing, the liquid crystal sheet cannot display images.

And two polarizers are cut into glasses shape, and the lenses are attached. Complete the 3D glasses!

Polarizer, a term in optical physics, refers to the optical element that can make natural light polarized light called polarizer (or polarizing plate, polarizing film).

It is composed of very thin strips

When the polarizer rotates, the direction of the strip changes and the light wave that is blocked also changes.

It's the polarizer.

When the two polarizers are overlapped and turned in different directions, the shading efficiency is doubled

3D stereo glasses use the principle of light polarization

Make the polarization direction of the light entering the left and right spectacle lenses different

Left eye polarizer lets light in horizontally

The right spectacle lens enters vertically

When the left and right eyes see different images, the integration of the brain will produce a three-dimensional effect.