Traditional Culture Encyclopedia - Travel guide - What is a polarizer?

What is a polarizer?

Polarizers are manufactured based on the principle of polarization of light. The main function of polarization is to effectively exclude and filter out the scattered light in the light beam, so that the light can be put into the visual image of the glasses on the right transmission axis, making the field of vision better. Clear and natural, non-polarized lenses can easily hurt your glasses due to light in summer.

Generally, sunglasses only use the function of reducing light. Because ordinary lenses cannot filter light, they can only reduce the intensity of glare, ultraviolet light, etc., but cannot completely block these harmful rays, so their function is only to reduce eye fatigue. of harm.

Because polarized sunglasses have the function of polarizing light, they can block all harmful rays without affecting the transmission of visible light, and can truly protect the eyes. In addition to the basic UV protection function, polarized sunglasses also have anti-glare, road reflection light, water surface light, etc., and are suitable for driving, fishing, traveling, and daily wear.