LEAD OPTICL MANUFACTORY,SINCE 1998
Outdoor travel importance among sunglasses - 2013-06-02 23:46:08
Why should we wear sunglasses? The answer of course is UV matter, that first of all let us look at ultraviolet and its hazards. UV light is electromagnetic spectrum from 0.01-0.40 micron wavelength radiation in general, the shorter the wavelength, the greater the harm to human skin. UV can pass through the dermis, medium can enter the dermis. UV hazards: strong ultraviolet radiation on the skin, can occur illumination dermatitis, severe can cause skin cancer. UV effects on the central nervous system that may be headache, dizziness, fever and so on. Effect on the eye, can cause conjunctivitis, keratitis, known illumination ophthalmia, there may be induced cataracts. Although ultraviolet rays are present all year round, the winter was relatively mild and the sun north foggy, but UV only about 20% weaker than in the summer, is still harmful to human skin and eyes and other parts cause great harm, so winter still avoid ultraviolet irradiation. Especially the ozone layer is now reduced, exacerbated by the health hazards of ultraviolet radiation.
UV protection on the market a wide range of products, a variety of people in order to protect the skin \"weapons\" are used, but many people focus on the skin sunscreen often ignore the fact that UV rays to protect the eyes is not the importance of UV on the eye permanent damage can be said that we need to focus on their own eye protection.
UV rays protect your eyes is not the most direct and most effective way is to wear sunglasses. Types of sunglasses on the market today, styles, colors are more often people see dazzling, many friends (especially the ladies) will often be a variety of fancy sunglasses color appearance attracted. In fact, anti-UV sunglasses capabilities and its quality is the most important part, a good sunglasses should either completely block UV rays, and can be kept relatively high visible light transmittance, and must wear comfortable. Then I from sunglasses to compare the various components of inferior quality sunglasses with sunglasses difference.
Lens: I believe we all have seen the flyover stall selling \"sunglasses\" it, those glasses will not only serve to protect the role of the eyes, the eyes will cause more damage, this is because the human eye is the light intensity according to shrink enlarged, in bright light the pupil will be automatically reduced, thus reducing the ultraviolet light receiving surface, while poor quality sunglasses lenses are usually plain colored lenses, not only do not have UV protection, but also to provide a darker environment in which the pupil does not shrink or even amplified. So we must first choose the lenses have UV protection, as for lens color, you need to choose according to the light intensity. In addition, there are many polarized sunglasses feature polarizer is driving, fishing and other activities essential items, I own a pair of sunglasses is polarized, the surface carbon layer, an ordinary PC lenses more resistant and difficult to scratch.
Frame: poor sunglasses frames are generally used inexpensive plastic or general metal as a material, these frames are generally relatively stiff, the toughness, thermal stability, and quality aspects are far used in sunglasses TR90, nickel-aluminum , nickel silver alloys and other materials.
Nose pads and temples: high-quality sunglasses are often based on different styles and different wearers need to design a different nose and temples in sports glasses nose pads and temples to increase non-slip soft parts, to adapt Different designs adjustable nose nose pads adjustability, while the poor often do not have these sunglasses humane design.
Details section: Do not know if you have been careful to compare the price difference of two relatively large sunglasses differences in detail, for me these details is in addition to the base material glasses outside the focus of study. Lens edge grinding technology, the convergence of lenses and frames, paint and even fine gloss paint to the integrity of the hinges, these details are the determining whether a pair of sunglasses focus on quality.
Overall, a good sunglasses must meet the following basic conditions: lens made of PC lenses, anti-UV, anti-shock, the lens curvature uniform; Frame made of high quality materials (TR90, etc.); veneer comfortable design, fine craftsmanship, can good deal of details. On these bases, you can choose according to your needs the right sunglasses.
Compared to expensive watches, gorgeous costumes, stylish phone, a good sunglasses is also regarded as cheap items, and can protect the eyes, but also add a lot of fashion for their own, individual elements can be described as both beautiful and practical . Light intensity according to the day choose the right lens, very convenient. Only one pair of human eyes, the windows of the soul to do this little \"investment\" is also necessary to protect themselves from the eyes begin!
UV protection on the market a wide range of products, a variety of people in order to protect the skin \"weapons\" are used, but many people focus on the skin sunscreen often ignore the fact that UV rays to protect the eyes is not the importance of UV on the eye permanent damage can be said that we need to focus on their own eye protection.
UV rays protect your eyes is not the most direct and most effective way is to wear sunglasses. Types of sunglasses on the market today, styles, colors are more often people see dazzling, many friends (especially the ladies) will often be a variety of fancy sunglasses color appearance attracted. In fact, anti-UV sunglasses capabilities and its quality is the most important part, a good sunglasses should either completely block UV rays, and can be kept relatively high visible light transmittance, and must wear comfortable. Then I from sunglasses to compare the various components of inferior quality sunglasses with sunglasses difference.
Lens: I believe we all have seen the flyover stall selling \"sunglasses\" it, those glasses will not only serve to protect the role of the eyes, the eyes will cause more damage, this is because the human eye is the light intensity according to shrink enlarged, in bright light the pupil will be automatically reduced, thus reducing the ultraviolet light receiving surface, while poor quality sunglasses lenses are usually plain colored lenses, not only do not have UV protection, but also to provide a darker environment in which the pupil does not shrink or even amplified. So we must first choose the lenses have UV protection, as for lens color, you need to choose according to the light intensity. In addition, there are many polarized sunglasses feature polarizer is driving, fishing and other activities essential items, I own a pair of sunglasses is polarized, the surface carbon layer, an ordinary PC lenses more resistant and difficult to scratch.
Frame: poor sunglasses frames are generally used inexpensive plastic or general metal as a material, these frames are generally relatively stiff, the toughness, thermal stability, and quality aspects are far used in sunglasses TR90, nickel-aluminum , nickel silver alloys and other materials.
Nose pads and temples: high-quality sunglasses are often based on different styles and different wearers need to design a different nose and temples in sports glasses nose pads and temples to increase non-slip soft parts, to adapt Different designs adjustable nose nose pads adjustability, while the poor often do not have these sunglasses humane design.
Details section: Do not know if you have been careful to compare the price difference of two relatively large sunglasses differences in detail, for me these details is in addition to the base material glasses outside the focus of study. Lens edge grinding technology, the convergence of lenses and frames, paint and even fine gloss paint to the integrity of the hinges, these details are the determining whether a pair of sunglasses focus on quality.
Overall, a good sunglasses must meet the following basic conditions: lens made of PC lenses, anti-UV, anti-shock, the lens curvature uniform; Frame made of high quality materials (TR90, etc.); veneer comfortable design, fine craftsmanship, can good deal of details. On these bases, you can choose according to your needs the right sunglasses.
Compared to expensive watches, gorgeous costumes, stylish phone, a good sunglasses is also regarded as cheap items, and can protect the eyes, but also add a lot of fashion for their own, individual elements can be described as both beautiful and practical . Light intensity according to the day choose the right lens, very convenient. Only one pair of human eyes, the windows of the soul to do this little \"investment\" is also necessary to protect themselves from the eyes begin!
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