3 thoughts on “May I ask the role of various lenses, or advantages and disadvantages of sunglasses? Such as glass, resin and polarizers? thanks.”
Regina
What color is good for sunglasses? Don't wear blue. Im experts said that Blu -ray is the most hurting eyes, yellow and brown are the best. The sun is hot. In order to protect the delicate eyes from being burned by the sun, the colorful sunglasses "shiny". However, according to Reuters, American ophthalmologists have suggested that blue lenses should not be selected when buying sunglasses in the summer because it may damage eye health. Dr. Tenites Paro, a professor of ophthalmology at the Medical Center of Columbia University, said that most people should not wear blue sunglasses regardless of whether they are young and old. After Dr. Sparro is studying the blue light in the exposure of human eyes to the sun, it will cause the retinal macular degeneration. This transgender eye disease is the main reason for the blindness of the elderly. She believes that with the increase of age, more and more photovoltaic compounds in some retinal cells will increase, and the wavelength of the blue light part in the spectrum can activate these compounds to the greatest extent and promote the release of harmful free radicals, just like damaging the retinal cells that damage the retinal cells The oxidation process is the same, threatening the health of the eyes.
This, Professor Zhu Renyuan of the Eye, Ear, Nose and Throat Hospital affiliated to Shanghai Fudan University also said that the blue sunglasses will indeed cause damage to the health of the eyes. This is because on the one hand, the wavelength of blue light is very short, the human eye is the smallest in the blue light, and it is not clear to see things; on the other hand, blue is the color closest to ultraviolet rays. Like ultraviolet rays, it is not good for the optic nerve to the optic nerve. It is easy to cause damage to the eyes. In clinical, many optic neuropathy is confirmed to be related to blue light. Professor Zhu Renyuan emphasized that, in addition to blue lens glasses, colorful contact lenses with blue stripes on the market will also endanger eye health and should be cautious when choosing. , what color of a color of a color is it safe to buy a color? Professor Zhu Renyuan said that yellow or brown sunglasses are the best. He explained that because the yellow light has a medium wavelength, the visual cells of the human eye are the most sensitive to yellow, making the scenes of nature look more clear. Moreover, yellow sunglasses can also filter blue light, reduce the amount of blue light entering the eyes, and effectively protect eye health. In addition to yellow or brown lenses, black lenses are also a good choice because it can reduce contact with all color light.
Finally, Professor Zhu Renyuan reminded consumers that the current sunglasses market is mixed, and the quality of many glasses is not closed. He emphasized that a good sunglasses should block ultraviolet rays instead of fading visible light. so. When choosing a sunglasses, you need to choose the anti -ultraviolet function. The anti -ultraviolet index is usually between 96%and 98%; the second is not advisable to choose too much color. The pupils are scattered in the dark, and the same number of ultraviolet rays will be either in large quantities, which will damage the eyes.
1. Glass tablets: No matter what kind of conceptual vocabulary you hear, space sheets, cosmic tablets, non -spherical or anti -glare at the same time, and the best lens at present is still glass sheet. Of course, the most resistant to scratching is glass sheet. Even if the general glass, the hardness is about 6, and the hardness of the blade is 5.5, so you don't have to worry about the scratch of the lens. If your lenses are hard glass or crystal, they are safe before they encounter diamonds and granite. The history of using glass as a lens can be traced back for hundreds of years, but there are fewer and fewer insisted on using glass films so far. Price is an important reason. Compared with cutting and polishing the lathes of lathe, the consumption of other materials can be ignored by the year -on -year consumption. Mu sunglasses of glass tablets, then you must not miss Ray Ban. It seems that no one can surpass Raypeng's attachment to glass lenses. This is the case in the Docuel era. so. When needed, use glass, and use glass if you don't need it (imagine children 4-6 years old, wearing Ray Ban for children's sunglasses for them are also hard glass). As long as the range allows the arc Glass. Even if the polarization, gradient color, adaptive light, red -green enhancement, and even gradient color plus polarization, there is nothing to stum to stump Raypeng. If it wasn't for the weight, maybe the Earth people could not stop Ray Peng's determination to use glass lenses on all sunglasses. But if you do not have the strong will of David's Greek nose or the Nordic Vikings, that pure glass lens sunglasses will always remind you that tangible and nasal bridge pain will be inseparable. Except for weight problems, its fragility cannot be ignored. Although all manufacturers producing glass lenses have claimed that their lenses have adopted hardened and riot technology, which is absolutely safe, the number of events that hurt the eyes due to crushing lenses have never declined, and glass films have been topped the list. advantages: extremely high optical properties, high surface hardness, strong scratch resistance Disadvantages: heavy weight, fragile. Price: high brand use: Ray. Ban, Pilkinton, all other big names in the 1980s. 2, resin tablets: Ol-39 (CR-39) is a chemical of a phenolic structure, characteristics: light weight, high temperature resistance, strong resistance to impact, can effectively block ultraviolet rays; mostly used for correction vision Optical lenses. However, as the demand for sunglasses increases, sunglasses with correction performance have emerged. Among them, the king who does not lack optical lenses is to fight for the benefits of the border or to cope with the fierce industry competition. Is a gospel. At least there is no need to take a cheap clip or frequently replace sunglasses and myopia to cope with the dazzling sunlight. Easy coloring is almost the killer of the resin tablets. You can turn a thick version of the version to choose the color you want, even the gradient color and harmony. but it seems that "one thing is both" is never a fashion direction, or the characteristics of luxury goods are not people -oriented. Just like a mobile phone with strong camera performance, it can't replace people's thirst for Leica (Lycra); no matter how precise electronic watches, they cannot shake the status of mechanical watches. Even if the resin itself has poor toughness (it will deform under the strong sunlight at the same time) and impact (if you just use it for reading in the sun, and it is not a big deal if you do not consider the needs of exercise) Factors; its own moderate characteristics, and the requirements of luxury brands are always running down. advantages: light, good optical performance, easy to color. Disadvantages: poor toughness and impact. Price: wide range, generally medium brand use: mainly used for optical lenses, according to Essilor, Nikon, etc. 3, nylon tablets: made from nylon, characteristic: higher elasticity, excellent optical quality, strong resistance to impact performance, was applied as eye protection mirrors when invented. In addition to professional protection, it is quickly promoted in many special industries, such as military and police, as well as anti -mirrors in the shooting field. Nylon films are also favored by fashion emerging and luxury brands at the same time. It also starts from the controversial advertising soft text "Battlefield Report" that is controversial. What is helpful is a battlefield interview with the National Geographic Magazine to truly reflect the US military in Afghanistan. In the situation, the reporter used a large number of real -shot images to illustrate the local danger and the cruelty of war. The soldiers who were hit by countless shot wrecks were particularly meticulous, but finally became a propaganda material without modification. The surviving soldiers were not damaged in some of the Oakley sunglasses, and the other areas of the face were burned by shifts and gunpowder. Assuming that it wasn't the nylon lens protecting his eyes, it should have been blind. Although Oakley used the picture to use the picture for advertising promotion, it was stopped in the protest of human or peaceful folk organizations, but people seemed to immediately find the reason for changing the material to protect their eyes. Oakly, and the unwilling to gain Oakely, and the unwilling luxury luxury brand (LV Group), all followed up and pushed the nylon to the position of the glass lens substitute. Luxury brands do not need to succeed in cost -effectiveness. Although the traits of nylon itself are not very suitable for gradient coloring and attachment polarizers, today, when technology is highly developed, as long as the cost is not expected, there is nothing unsuccessful. The more cutting -edge, the more luxury goods are defended. Especially those companies that rely on jewelry to make their homes, whether it is Chrome Hearts (Cloxy), which is advertised for Gothic style, elegant and simple Tiffany (Tiffany), or Di Modolo, who is pursuing luxury, is customized for it. The cost of gradient polarizer, the cost is probably enough to buy a few sunglasses. advantages: high toughness, stable optical performance Disadvantages: wear resistance is worse than glass, and the production cost is high. Price: high brand use: LV, Gucci, Fendi, Burberry, Oakley, LOEWE and all international first -tier brands you can think of Outside of PC tablets and a few sets of color or colorless plastic, the most widely used in China is TAC lenses. How much can be regarded as the hall and the kitchen. The cost -effectiveness as the absolute selling point of TAC lenses, which deeply attracts all "fast food" fashion brands at home and abroad. As an alternative to acrylic, TAC's acid and alkali type and light texture are indeed highly hoped at the beginning of use, or you have the preparation of at least 2 sets of sunglasses every summer, then the colorful, light and bright Tac tablets It is indeed cheap enough. but the abrasion resistance is the soft feet of the TAC lens. Large -sized retail and wholesalers, after the short joy of contacting the TAC lens, replaced it in the face of the troubles of the split -like scratches in the lens. So the protection of sunglasses is endless. When inventory, there are some grades to protect the film with a lens, some sealing bags, and simply covered with plastic wrap. The optical characteristics that are not too stable. Although TAC lenses are low in price, they are eventually discarded by most well -known foreign brands. advantages: light, good coloring, low price. Disadvantages: Low abrasion resistance, unstable optical performance Price: Low to medium brand use: Basic state-owned brands and foreign suppliers against Wal-Mart, Target, K-Mart. I do n’t know if I can help you.
The glass is more resistant to the glass, but heavier and fragile. The resin is lighter, not easy, but not tolerant. The polarizing mirror is mainly used in anti -glare. The driver wears this glasses. When driving at night, it has a certain effect on the lighting of the lights.
What color is good for sunglasses? Don't wear blue.
Im experts said that Blu -ray is the most hurting eyes, yellow and brown are the best.
The sun is hot. In order to protect the delicate eyes from being burned by the sun, the colorful sunglasses "shiny". However, according to Reuters, American ophthalmologists have suggested that blue lenses should not be selected when buying sunglasses in the summer because it may damage eye health.
Dr. Tenites Paro, a professor of ophthalmology at the Medical Center of Columbia University, said that most people should not wear blue sunglasses regardless of whether they are young and old. After Dr. Sparro is studying the blue light in the exposure of human eyes to the sun, it will cause the retinal macular degeneration. This transgender eye disease is the main reason for the blindness of the elderly. She believes that with the increase of age, more and more photovoltaic compounds in some retinal cells will increase, and the wavelength of the blue light part in the spectrum can activate these compounds to the greatest extent and promote the release of harmful free radicals, just like damaging the retinal cells that damage the retinal cells The oxidation process is the same, threatening the health of the eyes.
This, Professor Zhu Renyuan of the Eye, Ear, Nose and Throat Hospital affiliated to Shanghai Fudan University also said that the blue sunglasses will indeed cause damage to the health of the eyes. This is because on the one hand, the wavelength of blue light is very short, the human eye is the smallest in the blue light, and it is not clear to see things; on the other hand, blue is the color closest to ultraviolet rays. Like ultraviolet rays, it is not good for the optic nerve to the optic nerve. It is easy to cause damage to the eyes. In clinical, many optic neuropathy is confirmed to be related to blue light. Professor Zhu Renyuan emphasized that, in addition to blue lens glasses, colorful contact lenses with blue stripes on the market will also endanger eye health and should be cautious when choosing.
, what color of a color of a color is it safe to buy a color? Professor Zhu Renyuan said that yellow or brown sunglasses are the best. He explained that because the yellow light has a medium wavelength, the visual cells of the human eye are the most sensitive to yellow, making the scenes of nature look more clear. Moreover, yellow sunglasses can also filter blue light, reduce the amount of blue light entering the eyes, and effectively protect eye health. In addition to yellow or brown lenses, black lenses are also a good choice because it can reduce contact with all color light.
Finally, Professor Zhu Renyuan reminded consumers that the current sunglasses market is mixed, and the quality of many glasses is not closed. He emphasized that a good sunglasses should block ultraviolet rays instead of fading visible light. so. When choosing a sunglasses, you need to choose the anti -ultraviolet function. The anti -ultraviolet index is usually between 96%and 98%; the second is not advisable to choose too much color. The pupils are scattered in the dark, and the same number of ultraviolet rays will be either in large quantities, which will damage the eyes.
1. Glass tablets:
No matter what kind of conceptual vocabulary you hear, space sheets, cosmic tablets, non -spherical or anti -glare at the same time, and the best lens at present is still glass sheet. Of course, the most resistant to scratching is glass sheet. Even if the general glass, the hardness is about 6, and the hardness of the blade is 5.5, so you don't have to worry about the scratch of the lens. If your lenses are hard glass or crystal, they are safe before they encounter diamonds and granite.
The history of using glass as a lens can be traced back for hundreds of years, but there are fewer and fewer insisted on using glass films so far. Price is an important reason. Compared with cutting and polishing the lathes of lathe, the consumption of other materials can be ignored by the year -on -year consumption.
Mu sunglasses of glass tablets, then you must not miss Ray Ban. It seems that no one can surpass Raypeng's attachment to glass lenses. This is the case in the Docuel era. so. When needed, use glass, and use glass if you don't need it (imagine children 4-6 years old, wearing Ray Ban for children's sunglasses for them are also hard glass). As long as the range allows the arc Glass. Even if the polarization, gradient color, adaptive light, red -green enhancement, and even gradient color plus polarization, there is nothing to stum to stump Raypeng. If it wasn't for the weight, maybe the Earth people could not stop Ray Peng's determination to use glass lenses on all sunglasses. But if you do not have the strong will of David's Greek nose or the Nordic Vikings, that pure glass lens sunglasses will always remind you that tangible and nasal bridge pain will be inseparable.
Except for weight problems, its fragility cannot be ignored. Although all manufacturers producing glass lenses have claimed that their lenses have adopted hardened and riot technology, which is absolutely safe, the number of events that hurt the eyes due to crushing lenses have never declined, and glass films have been topped the list.
advantages: extremely high optical properties, high surface hardness, strong scratch resistance
Disadvantages: heavy weight, fragile.
Price: high
brand use: Ray. Ban, Pilkinton, all other big names in the 1980s.
2, resin tablets:
Ol-39 (CR-39) is a chemical of a phenolic structure, characteristics: light weight, high temperature resistance, strong resistance to impact, can effectively block ultraviolet rays; mostly used for correction vision Optical lenses. However, as the demand for sunglasses increases, sunglasses with correction performance have emerged. Among them, the king who does not lack optical lenses is to fight for the benefits of the border or to cope with the fierce industry competition. Is a gospel. At least there is no need to take a cheap clip or frequently replace sunglasses and myopia to cope with the dazzling sunlight. Easy coloring is almost the killer of the resin tablets. You can turn a thick version of the version to choose the color you want, even the gradient color and harmony.
but it seems that "one thing is both" is never a fashion direction, or the characteristics of luxury goods are not people -oriented. Just like a mobile phone with strong camera performance, it can't replace people's thirst for Leica (Lycra); no matter how precise electronic watches, they cannot shake the status of mechanical watches. Even if the resin itself has poor toughness (it will deform under the strong sunlight at the same time) and impact (if you just use it for reading in the sun, and it is not a big deal if you do not consider the needs of exercise) Factors; its own moderate characteristics, and the requirements of luxury brands are always running down.
advantages: light, good optical performance, easy to color.
Disadvantages: poor toughness and impact.
Price: wide range, generally medium
brand use: mainly used for optical lenses, according to Essilor, Nikon, etc.
3, nylon tablets:
made from nylon, characteristic: higher elasticity, excellent optical quality, strong resistance to impact performance, was applied as eye protection mirrors when invented. In addition to professional protection, it is quickly promoted in many special industries, such as military and police, as well as anti -mirrors in the shooting field.
Nylon films are also favored by fashion emerging and luxury brands at the same time. It also starts from the controversial advertising soft text "Battlefield Report" that is controversial. What is helpful is a battlefield interview with the National Geographic Magazine to truly reflect the US military in Afghanistan. In the situation, the reporter used a large number of real -shot images to illustrate the local danger and the cruelty of war.
The soldiers who were hit by countless shot wrecks were particularly meticulous, but finally became a propaganda material without modification. The surviving soldiers were not damaged in some of the Oakley sunglasses, and the other areas of the face were burned by shifts and gunpowder. Assuming that it wasn't the nylon lens protecting his eyes, it should have been blind. Although Oakley used the picture to use the picture for advertising promotion, it was stopped in the protest of human or peaceful folk organizations, but people seemed to immediately find the reason for changing the material to protect their eyes.
Oakly, and the unwilling to gain Oakely, and the unwilling luxury luxury brand (LV Group), all followed up and pushed the nylon to the position of the glass lens substitute. Luxury brands do not need to succeed in cost -effectiveness. Although the traits of nylon itself are not very suitable for gradient coloring and attachment polarizers, today, when technology is highly developed, as long as the cost is not expected, there is nothing unsuccessful. The more cutting -edge, the more luxury goods are defended. Especially those companies that rely on jewelry to make their homes, whether it is Chrome Hearts (Cloxy), which is advertised for Gothic style, elegant and simple Tiffany (Tiffany), or Di Modolo, who is pursuing luxury, is customized for it. The cost of gradient polarizer, the cost is probably enough to buy a few sunglasses.
advantages: high toughness, stable optical performance
Disadvantages: wear resistance is worse than glass, and the production cost is high.
Price: high
brand use: LV, Gucci, Fendi, Burberry, Oakley, LOEWE and all international first -tier brands you can think of Outside of PC tablets and a few sets of color or colorless plastic, the most widely used in China is TAC lenses. How much can be regarded as the hall and the kitchen.
The cost -effectiveness as the absolute selling point of TAC lenses, which deeply attracts all "fast food" fashion brands at home and abroad. As an alternative to acrylic, TAC's acid and alkali type and light texture are indeed highly hoped at the beginning of use, or you have the preparation of at least 2 sets of sunglasses every summer, then the colorful, light and bright Tac tablets It is indeed cheap enough.
but the abrasion resistance is the soft feet of the TAC lens. Large -sized retail and wholesalers, after the short joy of contacting the TAC lens, replaced it in the face of the troubles of the split -like scratches in the lens. So the protection of sunglasses is endless. When inventory, there are some grades to protect the film with a lens, some sealing bags, and simply covered with plastic wrap.
The optical characteristics that are not too stable. Although TAC lenses are low in price, they are eventually discarded by most well -known foreign brands.
advantages: light, good coloring, low price.
Disadvantages: Low abrasion resistance, unstable optical performance
Price: Low to medium
brand use: Basic state-owned brands and foreign suppliers against Wal-Mart, Target, K-Mart.
I do n’t know if I can help you.
The glass is more resistant to the glass, but heavier and fragile. The resin is lighter, not easy, but not tolerant. The polarizing mirror is mainly used in anti -glare. The driver wears this glasses. When driving at night, it has a certain effect on the lighting of the lights.