Polarized sunglasses
Polarized sunglasses are a type of sunglasses. Polarized light can be divided into three types, namely linear polarized light, elliptical polarized light and circular polarized light. Generally the so-called polarized light refers to linear polarized light, also known as plane polarized light. The vibration of this light wave is fixed along a specific direction, the propagation path in space is sinusoidal, and the projection on the plane perpendicular to the propagation direction is a straight line.
In daily life, there are too many light sources that can produce harmful light, especially sunlight; the light emitted from the sunlight includes three types: visible light, infrared light, and ultraviolet light. Among them, ultraviolet rays cause serious damage to human skin and eyes. In sunlight, there are Visible light ray (380~780nm), blue light and ultraviolet rays. Ultraviolet rays are divided into UVA, UVB, and UVC (310nm), which are harmful rays. If exposed to the sun for a long time will cause damage to the body, UVB has a serious impact on eyesight, Tanning Ray is the light that burns the skin, most of the corners of the eyes will absorb this UVB light, so be sure to block this light source. Polarized sunglasses have the function of polarizing light, so they can block all harmful light without affecting the transmission of visible light, which can truly protect the eyes. In addition to basic anti-ultraviolet functions, polarized sunglasses also have anti-glare, reflected light on the road, and scales on the water surface. They are suitable for driving, fishing, traveling, and daily wear.
The lenses of polarized sunglasses can darken after the sun's rays hit. When the lighting diminished, it became bright again. This is possible because the silver halide crystals are working. Under normal circumstances, it can keep the lens perfect transparency. Under the sunlight, the silver in the crystal separates, and the free silver forms small aggregates inside the lens. These small silver aggregates are irregular blocks with canine teeth. They cannot transmit light, but can only absorb light. As a result, the lens darkens. In the case of light and darkness, the crystals are formed again, and the lens is restored to a bright state.
Generally, sunglasses only use the effect of light reduction. Because ordinary lenses cannot filter light, they can only reduce the intensity of glare, ultraviolet light, etc., and cannot completely block these harmful rays, so their function is only to reduce eye damage, but the general sun The biggest advantage of glasses is their popularity. Polarized lenses have polarizing properties, so they can completely block the glare caused by various factors such as scattering, refraction, and reflection. At the same time, it can completely block the ultraviolet rays that are harmful to human eyes, so that when people are active for a long time under strong light, the eyes are not easy to get tired, to achieve the function of real protection, and it can make the things seen more clearly and three-dimensionally.
In summer, fishing friends like to wear polarized glasses. Polarized sunglasses have the function of filtering polarized light. Wearing them for fishing will make it easier to see and not tired. If the lenses are dark in color (such as brown, green and gray, etc.), wear them in summer and feel more comfortable. . It is also recognized globally as the most suitable lens for driving. The polarizer is made according to the polarization principle of light, and it has the special function of effectively eliminating glare, filtering the chaotic light, so that the driver can improve the vision and add driving pleasure. Friends who love outdoor leisure travel also have a special liking for polarized lenses. Polarized lenses are composed of a balanced arrangement of crystals. This structure only allows light waves balanced with the crystal to pass, and light waves vibrating at other angles are uniformly blocked. Let you see the clarity of the world, return you a colorful world, bluer sky, rich and beautiful nature. The polarization angle and curvature of the lens are professionally designed and processed, so that the wearer will not feel distorted and dizzy. The resin polarized lens has the advantages of lightness and resistance to breakage, and it is easy and comfortable to wear. Most suitable for fishing, driving, sports, sailing, skiing, hunting and other occasions.