So,in outdoor activities,especially in the summer,a lot of people are used to block the sun

Cheap sunglasses can cause your iris to open to receive more light,to exclude part of the light.This also increases the damage caused by ultraviolet rays to the retina,more ultraviolet rays enable input.Therefore,differences in various sunglasses is certainly or to ??.For a particular application environment,appropriate,selection of high-quality sunglasses will provide maximum protection for you.According to international standards,sunglasses,are classified into the category of protection products of the individual's eye.The main function of sunglasses is to block the glare of the sun.However,international standards of sunglasses is subdivided into again "fashion mirror," "general-purpose with a mirror." "Fashion mirror" relatively low quality requirements standard."Fashion mirror" is the main highlight of the wearer focus style and not because it is,it is decorative than protective.Standard for quality requirements and "general-purpose lenses,UV protection,as well as including the index of refraction prism,is more severe.

nike shoes3 category Please use the classificationThe use of sunglasses,sun mirror,can be divided into light-colored sunglasses,and special purpose sunglasses category of.SunglassesSunglassesThe so-called solar mirror is intended to shielding As the name suggests,people usually,the light intensity is dependent on the regulation of the size of the sun of the pupil in order to adjust the magnetic flux exceeding the ability to modulate the human eye to have,it will cause harm to the human eye.So,in outdoor activities,especially in the summer,a lot of people are used to block the sun visor mirror for harm is to reduce the occurrence adjustment eye fatigue and light stimulus.Light-colored sunglasses to block the action of the good and sunlight as shade is rich colors suitable for use in all types of clothing has a strong decorative effect.The reason,its rich color,style of bright colors of sunglasses,by young people of all ages,it fell in love,is more fashionable women.Special purpose sunglasses,in general,beach,skiing,hiking,to block the more intense the sun and powerful features that are used under outdoor sunlight,such as golf,UV resistance and other indicators that are,There is a higher requirement.Favorite Ya people who differ according to different applications,but to select the sunglasses,the most basic thing is to protect the wearer from safety and vision are not subject to the basic principles of injury withdrawal.Light stimulation,visual clarity without distortion,anti-UV,color recognition,reduce the distortion without precise identification of traffic signal,it should be a basic function of sunglasses.If there is a defect in these features,ranging from the loss of the role of sunglasses,weight,slow when you react,dizziness,suitable for sore eyes and consciousness,claims the color illusion caused the other symptoms,of inequality Walk the symptoms,can lead to an accident,such as.So sunglasses focuses only on style,Choose not be able to ignore the inherent quality.Lens categoryAnti-reflective protective lens,color lens,tinted lenses,polarized lenses,photochromic lenses and other 5: The type of sunglass lenses are roughly classified.1 antireflective protective lens: The lens is not clearer,it is possible to see what the interference of light,

Nike Shoes Outletin order to prevent the reflection of light,are covered with a thin layer of magnesium fluoride on the su***ce.Your sunglasses,to test whether in fact it is in the anti-reflective protective lens is,the glass,but you can be aligned with the light source,and if you look at the reflection of purple and green,it is the lens is coated with an anti-reflection it means that you have been protective film.2.Color Lens: lenses to indicate the color,in order to absorb certain wavelengths of light,a number of chemical substances,which,in the manufacturing process of the lens is called "dyed lens".This lens,sunglasses type of the most commonly used.3.Made colored lenses differ only this lens method,show the same effect as the color of the lens,it is a color that is applied to the lens su***ce and are "inclined colored lens" are the best known,color but most of the top,down is gradually shallow.Dealing with the general prescription sunglasses I am coloring a plurality of lenses.4.polarized lenses: In order to filter the sun,a special coating that is perpendicular to the lens,which is known as a polarizing lens,in addition,in the same direction as the water and snow of land,and had been shining in dazzling light .How to use Seaside,skiing,fishing,for example),it is ideal for outdoor sports.5.Lens: ".Sensitive lens" was known as the original colorless and transparent lens is also that it meets the strong light,it therefore makes the protection to the color lenses,chemicals,the lens Now that we have added to the silver halide,it is suitable for use in indoor and outdoor.6.sunglasses clip: sunglasses,specially designed for polarized sunglasses,effective anti-glare,anti-UV clip for sighted.
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