one,Polarized lensCharacteristic

The polarized lens is compressed by multi -layer thin resin materials, which is relatively lightweight.Each layer has different effects.The middle layer is a polarized layer, and its principle seems to be a shutter, which can filter out of the strange reflection light.The second and third layers can filter 99.9%of the harmful ultraviolet rays and reduce the strength of the light. The function is no different from ordinary Sunglasses.The fourth and fifth layers of polarized lenses are the anti -impact layer, making the lens not easy to break; the sixth and seventh layers are strengthened, making the lens difficult to wear.Polarized mirrors can filter out harmful light to protect the eyes.

Although polarizing lenses can filter out many irregular light interference and avoid dazzling, dazzling, etc., if the arc bend of the lens itself cannot be in the state of optical optical standard refractive state, the polarizing effect will be weakened, affecting the authenticity of the image, and durablePoor sex.

The general polarizing Sunglasses on the market are made of fibrous clip polarizing membrane.It is different from the optical glass polarized Sunglasses. Because of its soft texture and unstable arc curvature, after the lens assembly is upper frame, it is difficult for the lens to meet the optical refractive standard, and the image is loose and deformed.Due to the unstable arc curvature, the lens deforms, resulting in the clearness of the light transmittance image, the image distortion, and the effect of normal lighting.And the surface is easy to scratch, wear, and imperative.

Second, the role of polarizing mirror

The effect of polarizing mirror is to effectively eliminate and filter the scattered light in the beam.Make the light into the eye visual image in the transmittance of the light, making the field of view clear and natural.Like the principle of shutters, the light is adjusted to the same direction and enter the room, naturally makes the scenery look soft and not dazzling.Specific to daily life:

1. When driving, it will no longer bother the many reflection from the sun and the vehicles in front.

2. When fishing, the water wave shines under the sun, but you will not feel uncomfortable at all, but feel comfortable and disappear.

3. When skiing, you don't have to worry about reflective and ultraviolet rays, you can skate.

4. When it rains, the road traffic signs with rainwater flow are clearly presented in front of you.

5. During vacation, let you enjoy the sun, beach and leisure time.

Three, DaiPolarized glassesWhat are the benefits

The ideal polarized Sunglasses should have the following conditions:

1. It must be able to filter more than 99%of the ultraviolet rays in the sun, and the filtering performance meets the requirements of international standards.

2. Effectively block the function of strong light.

3. The lens has a standard optical arc design, forming an optical shaft to produce video.

4. The eye frame is firm, the frame material is excellent, and the optical function is designed. It feels comfortable and safe after wearing.

Polarized Sunglasses are a combination of substances. Generally, the two layers are combined with seven layers.In the middle, the middle layer is the polarization layer.The polarized layer is effective, but it is not wear -resistant and is easy to scratch.

The polarizer can reflect the random reflex light, glare, and irregular reflex light resistance in natural light. The inside of the polarizer has 300,000 linear lines that can not be seen in each 1 Square centimeter.direction.

Compared with ordinary glass Sunglasses, polarized Sunglasses do not affect vision and will not cause color difference.At the same time, it can effectively avoid the damage of ultraviolet rays to the eyes.

Disclaimer: The above method stems from the index of the program system or the sharing of netizens. It is for your reference only and does not represent the research perspective of this website. It proves that it is valid. Please pay attention to the authenticity and authority of the source of the content of the content.Apply to delete & gt; & gt; error correction & gt; & gt;

[UV -proof glasses] How to identify the UV -proof function of Sunglasses, what is the coating

What is UV -proof glasses?

The light emitted in the sun is: visual light, infrared, ultraviolet rays, etc.The ultraviolet rays are seriously harmful to the Skin, eyes, etc. of the human body; the ultraviolet rays in the light released by the sunlight are divided into UVA, UVB, and UVC.It is the light of burning black Skin. Most corners of the eyes will absorb this UVB light, so it is necessary to block this light source.

Because UV glasses have the function of polarizing light, they can block all harmful light without affecting the visual light through, which can truly achieve the function of protecting the eyes.

How to identify the ultraviolet function of Sunglasses

Selecting Sunglasses depends on its lens quality, and pay special attention to the function of Sunglasses.So, how to identify whether Sunglasses have the function of anti -ultraviolet rays?In fact, it is not difficult. Put the Sunglasses on a 100 yuan RMB and use a purple light to identify it.

Experts said that the main role of Sunglasses is to prevent strong light and string light, especially ultraviolet irradiation, which protects eye health in summer and is not damaged.

Therefore, when purchasing, you must pay attention to whether there are "UV400" and "UV" logos on the lens and packaging. At the same time, the UV -proof test is also required.

Method 1. Look at the label of Sunglasses

There are Sunglasses with anti -ultraviolet function, generally there are several clear ways:

a) Mark the "UV400": This means that the lens's cut -off wavelength of ultraviolet is 400nm, that is, the maximum value of the maximum value of the spectrum transmission ratio of less than 400nm in the wavelength ()

b) Mark the "UV" and "UV prevention": This means that the lens's deadline for ultraviolet is 380nm, that is, the maximum value of the maximum value of the spectrum transmission ratio of less than 380nm below 380nm;

c) Mark "100%UV absorption": This means that the lens has 100%absorption function on ultraviolet rays, that is, its average transmission ratio in the ultraviolet interval is not more than 0.5%.

The Sunglasses that meet the above requirements are Sunglasses that truly have protection for ultraviolet rays.

Method 2. Use banknotes to verify

In the absence of instruments, ordinary people can also detect whether Sunglasses have the function of anti -ultraviolet rays.

Take a banknote, put the Sunglasses on the anti -counterfeit watermark, and use the banknote pen or the banknote inspection machine to take a look at the lens.If you can still see the watermark, it means that this pair of sun mirrors are not anti -ultraviolet. If you can't see it, it means that this pair of sun mirrors is anti -ultraviolet.

What is the coating of UV -proof glasses

The most effective and most commonly used method to avoid radiation light caused by damage to the eyes is to wear protective glasses.The so -called protective glasses are a filter that can change through light and spectrum.

This type of glasses is divided into two categories. One is absorption and one is a reflex. The former uses the most.

When the lens is manufactured, a part of the metal oxides are added to the general optical glass formula, such as iron, drilling, chromium, cricket, nickel, manganese, and some rare earth metal oxides such as harmony.

These metal oxides can make the glass selectively absorb the electromagnetic waves in a certain band of light, such as the oxide of the and iron can absorb ultraviolet rays in large quantities.Using this glass lens can reduce the amount of some wavelengths through the lens, reduce or prevent damage to the eye.

1. Absorption filter

Also known as Sunglasses.The transmission rate of visible light is about 20%, and the absorption of ultraviolet and infrared is better.There are many colors such as light green, light gray, and light tea, which are used to make sunshade and snow work protection glasses.

Among them, light gray lenses have minimized color recognition; light tea glasses make the blue sky look darker, which reduces the green light through it; the light green lens reduces red light through.

Second, reflective filter

The absorption filter is absorbed by the lens to some wavelength light to reduce the strong light in the eye, but because the lens absorbs certain light, it becomes heat and release, especially the infrared lines and other waves are longer.The light of light makes the eyes feel uncomfortable due to the accumulation of heat.

In actual work life, many situations are combined with absorption and reflective type, that is, a layer of high reflection membrane is placed on the color lens to make the filtering effect more, such as welding, chlorine -library welding, plasma cutting and other operators.You can use this method to solve it.

[Polarized glasses choose] How to buy Polarized glasses Polarized glasses to buy skills

How to buy Polarized glasses

Sunglasses are like a magic mask. As long as you wear it, you can make you instantly change the same star flavor.Friends who like Sunglasses will have some doubts when choosing a Sunglasses. The current Sunglasses are fashionable and popular in terms of shape, color to material, details.The prices of Sunglasses on the market are available from dozens of yuan to thousands of yuan. What should I choose?Especially the Polarized mirror, I do nt know where to start. Today I will talk about the precautions on the selection of polarizers.

The first consideration is the quality of polarized Sunglasses

The primary function of polarizing Sunglasses is to prevent ultraviolet rays and filtrate polarized light. Good polarized Sunglasses lenses can block more than 90%of ultraviolet penetration. Please choose polarized Sunglasses with the best blocking of UV400 to the best obstruction of ultraviolet logo;The inferior polarization Sunglasses of the polarizing filtering function, such as dark Sunglasses, is darker with the light of the human eye and the pupils of human eyes will become larger, and the ultraviolet rays of the eyes will increase, increasing damage to human eyes.

Will there be discomfort in long -term wear?

Genuine polarized Sunglasses have to be comfortable to wear; if you wear bad feelings such as discomfort, dizziness, headache, dry eyes, tingling, etc.Generally, inferior lenses have no technical and functional at all when manufacturing, and the lens materials are also very inferior. Choosing inferior polarizer Sunglasses cannot protect the eyes. On the contrary, it will cause damage to be worthless.

Select polarizing Sunglasses to focus on the protection function of the frame

In the outdoor sports, it can effectively prevent the stimulation of the eyes and foreign bodies. In addition, the hard level of polarizing lenses and the flexibility of the frame of the frame must be considered whether it will cause damage to the human body.In addition to basic functions such as filtering glare, most polarized motion motion frames are designed with veneer arc.

The identification of the quality of polarized Sunglasses

Generally, regular glasses shops have instruments to detect Sunglasses resisting ultraviolet capacity. Through instrument detection, you can know whether the glasses in your hands have reached the standard.In addition, the simple method of testing the quality of Sunglasses is: you can use the ultraviolet light sent by a banknote test or a banknote check machine to observe the UV logo pattern on the RMB through Sunglasses. If the quality of the Sunglasses is poor and there is no obstruction of the ultraviolet rays, it can still be clearly clear.When you see the UV logo pattern on the RMB, on the contrary, if the quality is excellent, you can't see it.

The selected polarized Sunglasses should be true and natural

The color selection of polarized lenses should be based on the color of the surrounding environment, the edges of the object are clear, and the principle of effectively identifying different color signal Lights.The color of the lens is better in gray, tea, and green, because these colors of lenses are better absorbed by infrared and ultraviolet rays, which can improve visual contrast and clarity, especially when driving Sunglasses, ensure driving safety.It is particularly effective when air pollution is severe or fog.

[Meicoscopy] What are the differences between Sunglasses?

What is the role of Sunglasses

Among the many Sunglasses brands, many people have taken their eyes, and they finally chose their favorite Sunglasses brands. You can face many Sunglasses types and do not know where to start."It is beautiful", but not practical Sunglasses.Today, we will mainly talk about what types of Sunglasses are divided into use, so that everyone will buy Sunglasses that suits them in the future.

No matter what Sunglasses brand, according to its purpose, it can be divided into the following three categories:

What are the functions of different Sunglasses?

First, light -colored Sunglasses are actually fashionable variants of sunshaders. Although the blocking effect of the sun is smaller than the sunshade, its fundamental purpose is to play a decorative effect. Relying on rich colors and trendy styles are deeply favored by young people.Over the years, fashion women have loved this Sunglasses suitable for all kinds of clothing.

Second, the Shading mirror is well understood, and it is literally understood that it is used to block the sun.If people do not wear Sunglasses under strong light, they can only adjust the size of the light by the pupils of the eyes, but this is limited. Once the light intensity exceeds the human eye adjustment capacity, it will inevitably cause damage to the eyes.Therefore, in the summer, a sun mirror should be used to protect your eyes and reduce the damage caused by fatigue and strong light stimulation caused by the self -regulation of the eyes.

Third, special Sunglasses are the enhanced version of ordinary sunshade mirrors. Its indicators are higher than ordinary Sunglasses. They have a larger function of covering strong light. Generally, they have different requirements for special occasions. They are commonly used on beaches and skiing.The sunlight such as mountain climbing and golf needs to have a good outdoor sports with a good vision.

precautions

Different people should choose their own Sunglasses according to different purposes, but one thing is very important. When choosing, you must start from the basic principles that can ensure the safety and vision of the wearer.

What are the classification of polarizing mirror

1. According to use

skiing mirror: You don't have to worry about reflective and ultraviolet rays, you can skate it;

fishing mirror: The water wave shines under the sun, but you will not feel uncomfortable at all, but feel comfortable and easy;

Polarized driving mirror: no more reflective troubles from the sun and the vehicles in front of the vehicle;

outdoor sports mirror: During vacation, let you enjoy the sun, beach and leisure time;

golf glasses: Don't worry about the dazzling sunlight, let you perform golf skills on the lawn.

2. According to the material

glass material: Hardness is high, scratches are not easy to appear, the impact resistance is poor, it is easy to break after being impacted, and the weight is heavier.

Resin material: very light, high -temperature resistant, resistance to impact, and can effectively block ultraviolet rays and see things clearer.

TAC lens material: effectively reduce strong light, the vision is clearer and soft, clear, will not be distorted or dizzy of the wearer.

3. According to the principle

Round polarizer (referred to as CPL)

Linear polarizer (referred to as LPL)

LPL is mainly used for old -fashioned manual focus cameras.The late CPL adds a layer of 1/4 wavelength film. This film has a special nature that can generate /2 phase shifts in one direction (assuming X) polarizing electrical vector, and vertically with it to be vertical with itThe electrical vector of the direction (assuming to y) has no effect.Therefore, the direction of the angle level of the above polarized light along X and Y can pass through 1/4 waves, so the light of the outlet is that there are two polarizing directions perpendicular to the light, and the polarized light of the phase difference /2 is synthesized, which is so -called so -called so -called so -called so -called so -called so -called so -called so -called so -called so -called so -called so -called so -called so -called so -called so -called so -called so -called so -called so -calledThe round is biased.This design makes it more suitable for new automatic focus and automatic exposure cameras.The camera currently using AF lens (switching camera lens with automatic focus function) uses CPL as polarizing mirrors.Under some light conditions, a linear polarizer may mislead the light metering element in the aircraft to merge, so the DC and most automatic focus cameras use round polarizers.

4. Press color

Light red or vermilion: In the case of glare, it can deepen the contrast and sharpness, which is very suitable for water activities and snow activities.

Brown or brown: It can enhance the contrast of color, so it becomes the first lens when driving.

Amber, yellow or orange: It is very suitable for wearing in cloudy days. It can have a very clear field of vision, but it is not suitable for strong use in the sun.

Gray or dark green: It can maintain the most natural original color when visually, which is a good choice.

What are the characteristics of all types of polarizing mirrors

According to the different mechanism of filter polarization, polarizers can be divided into two types: round polarizer (CPL) and linear polarizer (LPL). These two functions are the same.LPL is mainly used for old -fashioned manual focus cameras.The late CPL adds a layer of 1/4 wavelength film. This film has a special nature that can generate /2 phase shifts in one direction (assuming X) polarizing electrical vector, and vertically with it to be vertical with itThe electrical vector of the direction (assuming to y) has no effect.Therefore, the direction of the angle level of the above polarized light along X and Y through the direction of the lines of X and Y can pass through 1/4 waves, so the outlet of the light is that there are two polarizing directions perpendicular to the light, and the polarized light of the phase difference /2 is synthesized, which is so -called so -called so -called so -called so -called so -called so -called so -called so -called so -called so -called so -called so -called so -called so -called so -called so -called so -called so -called so -calledThe round is biased.This design makes it more suitable for new automatic focus and automatic exposure cameras.The camera currently using AF lens (switching camera lens with automatic focus function) uses CPL as polarizing mirrors.Under some light conditions, a linear polarizer may mislead the light metering element in the aircraft to merge, so the DC and most automatic focus cameras use round polarizers.

The role of the PL mirror is to filter reflective light to increase the contrast of imaging.Its working principle is to selectively filter light from a certain direction.By filtering the many biased Lights in the long reflection, weaken the intensity of light in the sky, darke the sky, and increase the contrast between the blue sky and the white clouds.When you shoot the specific real shooting, you should look at the viewfinder and rotate the front mirror. The darkest effect in the sky in the viewfinder is the most obvious, and the darkest is 90 degrees.You can transfer to any angle of the darkest and the brightest rooms as needed.

PL mirrors can also effectively weaken or eliminate non -metallic surface reflection. This reflection light is a typical polarizing light (the light reflected by the metal surface reflection is not polarized light, and the Polarized mirror does not work on it). By adjusting the polarizer, you can filter it by adjusting the mirror.The reflection of this part is dropped, thereby improving the image quality of the subject and improving the clarity of the picture.For example, by using polarizers, the reflection of the water surface can be weakened to clearly shoot the fish in the water.When shooting such a scene, the projection angle of the light source should be consistent with the angle of the camera, and its maximum partial angle needs to be agreed between 30 and 40 degrees.When using it, you can adjust the lens in the front group of the filter to minimize the reflection on the surface of the scene.

In addition, polarizing mirrors can effectively improve the saturation of color and increase contrast. This is because polarizing mirrors can absorb various directions reflected by fog or dust reflected in the atmosphere, so that the shooting images are more pure.For example, in photography such as flowers and static objects, polarizers are often used to take colorful photos.It is useful when landscape photography, flower photography and shooting certain specific reflective scenes.The polarizer is used in the landscape photo, and the depiction of the cloud layer has excellent effects.The light refractive index of the blue sky is greater than the light scattered by the white clouds.Using polarizer can also make the color of green leaves more saturated and eliminate the fog of shooting urban scenery at low angles.

Disclaimer: The above method stems from the index of the program system or the sharing of netizens. It is for your reference only and does not represent the research perspective of this website. It proves that it is valid. Please pay attention to the authenticity and authority of the source of the content of the content.Apply to delete & gt; & gt; error correction & gt; & gt;