Polarizers are manufactured according to the principle of polarization of light. We know that when the sun shines on the road or water, it directly irritates the eyes, making the eyes feel dazzling, fatigued, and unable to see things for a long time, especially when you are driving a car and engaging in outdoor recreational activities, which not only affects our work and Recreational emotions can even affect our perception of objects and cause danger. When exposed to direct sunlight for a long time, it will also lead to a rapid decline in vision, resulting in myopia, hyperopia, astigmatism or cataracts.
2. The role of polarizer
Effectively exclude and filter the scattered light in the beam, so that the light can be put into the visual image of the eye on the light transmission axis of the right track, and the field of vision is clear and natural; block harmful light, polarize the light, and completely absorb these rays that will cause glare and eye damage. glare.
1. When driving, if you are driving in traffic, you will no longer be troubled by the sunlight and many reflections from the vehicle in front.•
2. When fishing, the water waves shine under the sunlight, but you will not feel uncomfortable, but feel comfortable and distant: the reflection is gone.
3. When skiing, on the vast snow field, you don’t need to focus on the reflection and some outside lines, you can glide to your heart’s content.
4. When it rains, the road traffic signs that are flooded with rain are clearly presented in front of your eyes!
5. When on vacation, more UV rays are effectively blocked, allowing you to enjoy leisure time to the fullest.
Sunglasses are used for sun protection. People usually adjust the luminous flux by adjusting the pupil size in the sun. When the light intensity exceeds the adjustment ability of the human eye, it will cause damage to the human eye. Therefore, in outdoor activities, especially in summer, it is necessary to use sunshade mirrors to block the sun, so as to reduce the fatigue caused by eye adjustment or the damage caused by strong light stimulation.
The role of sunglasses
1. Beautiful decoration, cover eye defects, and visually thin face. This theory was put forward by Sister Olsen. Her theory is very simple. Women who love beauty and thinness will always deliberately make themselves look smaller and thinner. The bigger the sunglasses on the bridge of the nose, the more Your face appears smaller, creating a “skinny face” visual effect.
2. Prevent ultraviolet rays from sunlight. Ultraviolet rays can damage the cornea and retina, and high-quality sunglasses can completely eliminate ultraviolet rays.
3. Prevent strong light exposure. When the eye receives too much light, it naturally contracts the iris. Once the iris shrinks to the limit, people need to squint, and if there is still too much light, such as sunlight reflected from snow, it can damage the retina. High-quality sunglasses can filter out up to 97% of the light entering the eye to avoid damage.
4. Prevent glare exposure. Certain surfaces, such as water, reflect a lot of light. The resulting bright spots can disturb the view or hide objects.
5. Eliminate light of specific frequencies. Certain frequencies of light blur vision, while others enhance contrast. Cheap sunglasses filter out part of the light, causing the iris to open to receive more light and more ultraviolet rays to enter, increasing the damage caused by ultraviolet rays to the retina. Therefore, there are indeed differences between various types of sunglasses, and choosing the right, high-quality sunglasses for a specific usage environment will provide you with the greatest protection.
what color sunglasses are good
First of all, on the whole, the best lens colors for sunglasses are brown, gray and green and other light-colored lenses, which have better visual effects and protection effects. Of course, if it is just for makeup or matching, you can choose bright lens colors to highlight your own charm. And what are the advantages and disadvantages of sunglasses with different lens colors?
Brown series: It is recognized as the best lens color in the brown series sunglasses products, it can absorb almost 100% of ultraviolet and infrared rays; and the soft tones make the vision comfortable and make the eyes not easy to fatigue.
Gray series: It can completely absorb infrared rays and most of the ultraviolet rays, and will not change the original color of the scene. Mild, natural colors are popular lens choices.
Green series: Like gray series glasses, it can absorb all infrared rays and 99% of ultraviolet rays, and the cyan and red in the light are also blocked, but sometimes the color of the scene will be changed after passing through green lenses, but because green brings coolness Comfortable feeling, good eye protection, so it is also the first choice of many friends.
Yellow series: Yellow series lenses can absorb 100% ultraviolet rays and most of the blue light. After absorbing blue light, the scenery you see will be clearer, so it is more common to wear yellow lenses as filters when hunting and shooting.
Red series: The red series of sunglasses lenses are better at blocking some light with shorter wavelengths, while other protective effects are lower than those of the other three color series.
Post time: Aug-15-2022