Glasses that protect against ultraviolet radiation are divided into two types: sunglasses and polarized glasses. Sunglasses are well-known tinted glasses used to block sunlight and ultraviolet rays. They are generally brown or green. The difference between polarized glasses and sunglasses, but in our lives In addition to sunlight and ultraviolet rays, glare can also cause damage to the eyes, making our eyes tired and affecting the clarity of vision. Polarized lenses can filter out glare and achieve real eye protection. Polarized glasses are the most common type. The color is mainly dark gray.
First of all, what needs to be clarified is: in fact, polarizers can also be regarded as a type of sunglasses, but polarizers are a relatively high-end category of sunglasses. Polarizers have functions that ordinary sunglasses do not have. This function is that they can effectively block and filter out all kinds of harmful substances. Eye-damaging polarized light. The so-called polarized light is the irregular reflected light produced when light passes through uneven roads, water surfaces, etc., also called glare. When these rays of light directly illuminate people’s eyes, they will cause discomfort and fatigue to the eyes, making them unable to see for a long time, and the clarity of the objects they see is obviously insufficient.
What is the difference between polarized sunglasses and ordinary sunglasses?
①Difference in principle
Polarizers are manufactured based on the principle of polarization of light. Polarized light is also called polarized light. Visible light is a transverse wave whose vibration direction is perpendicular to the direction of propagation. The vibration direction of natural light is arbitrary in the plane perpendicular to the propagation direction. For polarized light, its vibration direction is limited to a specific direction at a certain moment. In life, in addition to sunlight and ultraviolet rays, when light passes through uneven roads, water surfaces, etc., it will produce irregular diffuse reflected light, commonly known as “glare”. The occurrence of glare will cause discomfort to the human eye, cause fatigue, and affect the clarity of vision. Ordinary sunglasses can only reduce the intensity of light, but cannot effectively remove the reflection from bright surfaces and glare from all directions. In addition to protecting against ultraviolet rays and reducing the intensity of light, polarizers can also effectively filter out glare.
Sunglasses, also called sunglasses. Tinted glasses commonly used to block sunlight and ultraviolet rays. When people are in the sun, they usually have to adjust the size of their pupils to adjust the light flux. When the light intensity exceeds the adjustment ability of the human eyes, it will cause damage to the human eyes. Sunglasses block uncomfortable glare while protecting your eyes from UV rays. Therefore, in outdoor activities, especially in summer, many people use sun visors to block the sun to reduce fatigue caused by eye adjustment or damage caused by strong light stimulation.
②Differences in materials
The general polarized sunglasses on the market are made of fibers sandwiched with polarizing films. It is different from optical glass polarized sunglasses because of its soft texture and unstable arc. After the lens is assembled and framed, it is difficult for the lens to meet the optical refractive standard, resulting in loose and deformed vision. Due to the unstable arc bend, the lens is deformed, which directly leads to poor clarity of light transmission, image distortion, and inability to achieve normal vision effects. And the surface is easy to scratch and wear. Not durable.
However, different groups of people can choose sunglasses according to their own preferences and different uses. The basic functions of sunglasses are to reduce strong light stimulation, see clearly without deformation, protect against ultraviolet rays, recognize colors without distortion, and accurately identify traffic signals.
③Differences in application
Because polarized sunglasses can block 100% of harmful rays, they are mainly used in:
1. Medical treatment: Eye surgery patients need all-round protection, and polarized sunglasses are the best choice.
2. Outdoor activities: such as skiing, fishing, water sports, etc., all require sunglasses that can completely block harmful rays to avoid eye injury or fatigue.
3. Also suitable for driving, traveling and daily wear.
What are the benefits of wearing polarized sunglasses regularly?
1. Improve night vision: Polarized night vision goggles can enhance the penetration of light at night, thereby improving the wearer’s vision at night and in low-light environments.
2. Reduce glare: Polarized night vision goggles can reduce glare, especially when driving at night or working at night. They can reduce the glare produced by the lights of oncoming vehicles or other strong light sources, improve visual comfort, and ensure the driving safety of drivers!
3. Improve color contrast: Polarized night vision goggles can improve the contrast between the object and the background, making it easier for the wearer to distinguish the details and contours of the target object. Especially at night, the vision itself is blurred, making driving safer after wearing it. .
4. Protect eyes: Polarized night vision goggles can reduce eye irritation and fatigue, especially when using electronic devices for a long time or working at night, and can reduce eye discomfort.
It should be noted that not everyone needs to wear polarized night vision goggles. Generally speaking, night drivers, night workers, or people who move more at night need to wear polarized night vision goggles to improve night vision and reduce the impact of glare.
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Post time: Apr-07-2024