kommertspolariseerijad

Kommertspolariseerijad, also known as commercial polarizers, are optical filters that transmit light with a specific polarization while blocking light with the perpendicular polarization. They are widely used in various commercial applications due to their ability to control light properties.

The fundamental principle behind a commercial polarizer is the selective absorption or reflection of light waves based on their orientation. When unpolarized light, which consists of light waves vibrating in all directions, passes through a polarizer, only the light waves vibrating parallel to the polarizer's transmission axis are allowed to pass through. The light waves vibrating perpendicular to this axis are either absorbed or reflected.

Commercial polarizers are manufactured using a variety of materials and techniques. Some common types include Polaroid film, wire-grid polarizers, and birefringent polarizers. Polaroid film, a type of dichroic polarizer, uses long-chain polymer molecules aligned in a specific direction. These molecules preferentially absorb light polarized parallel to them. Wire-grid polarizers consist of an array of parallel metal wires that reflect or absorb light polarized parallel to the wires while transmitting light polarized perpendicular to them. Birefringent polarizers utilize materials with different refractive indices for light polarized along different axes.

Applications for commercial polarizers are extensive. They are commonly found in LCD screens for televisions, computer monitors, and smartphones, where they are crucial for modulating light and creating images. In photography, polarizing filters are used to reduce glare from surfaces like water and glass, enhance sky colors, and increase contrast. They are also utilized in sunglasses to reduce eye strain caused by reflected light, in scientific instruments for optical measurements, and in certain types of eyewear for 3D movies.