For example,yellow light,to see how is the direct target of the frequency

It will be lower than the floating between $ 20 to several hundred US dollars,depending on the price of the features and brand of sunglasses.In addition,the market there is a forgery.Discount stores and flea markets cane ?? mappings at a time,to you,to sell counterfeit expensive brand of counterfeit sunglasses,but you can find a skilled in the art that look identical in appearance,and the price is much lower than the real thing .You choose the fake instead if you buy them really brand of sunglasses,do you spend your own brand a lot of money to or to buy the real nature of the difference?The biggest problem is the production method of inexpensive sunglasses lens.They are simply coated,a layer of color film to normal plastic.Frame similar to these counterfeit color and Oakley X- metal Romeos or Ray Ban Predator is,actual lenses are very different.Even if,Principle 7 Quality sunglasses,"light modulator." It's very effective sunglasses as it is suitable to the human eye,you can adjust the external light.In the following section,SunglassesSunglassesAdjusting the light to introduce the different techniques used by the sunglasses manufacturers.In order to better understand these technologies,first,you need to understand something about light.Constant wave electromagnetic energy of the bundle.The size of the wave is measured at a wavelength.400? 700 the visible wavelength range of nanometers.

Best Cheap Nike Wholesale Roshe RunInversely proportional to the energy light waves and wavelength,short wavelength,high energy.The visible light,the maximum value of the purple energy,minimum energy red light,and the visible light spectrum is ultraviolet light.In fact,it contains a lot of natural light in the ultraviolet.Ultraviolet light of high energy,and due to the ultraviolet energy of your cornea and retina damage.What is glare?Unit of measurement of the intensity of the brightness and light is the lumens.For example,in the room,most of the artificial light intensity is from 400? 600 lumens.Sunny outdoors,if you want to float in the brightness wide range,thousand lumen shade of brightness,high-speed roads and other specific areas,there is a large area,such as the brightness of 6,000 lumens.Brightness following of 3500 lumens,we feel very comfortable to the human eye.When the brightness of direct or reflected light from reaching the 4000 lumens,the human eye will receive light became difficult.We are the white flash that only glare,in order to see,it tries to efforts to refer to these very bright area.Much of the light entering the eye is decreased because,in order to cause discomfort,we narrowed started.When the brightness reaches 10,000 lumens,light of reason is too your eyes strongly,it will start a completely filter the light.This is such a strong light exposure to bring temporary or permanent blindness too long,can cause damage.On sunny days,large-scale snow,we stare into the light in the absence of any protective measures that lead to the light,

Cheap Nike Wholesale Online Air Max 90 it can be up to 12,000 lumens of brightness,reflection "snow blindness."You can perceive the light visible to the human eye.We,we often referred to as white light,in other words,please see the visible light emitted from the sun appears to be colorless.In fact,it is a combination of optical frequency mixing that has been colored.All of mixed color of light ?? flux in the visible spectral range,namely,white,is colorless.(For more information,please refer to the principle of light) ??.We have two basic ways to see ?? color.Another method,although intended to absorb all other frequencies of light,reflecting only a specific frequency of light or reflected a plurality of frequencies,one of the methods specified object light The frequency is emitted,for example,it can show is light is that like a neon colors,these waves,such as a painted object has been recognized by mixing one color of light,thus It will display the color.For example,yellow light,to see how is the direct target of the frequency of the yellow light,another method may be to absorb light,the green portion of the light mixed after the blue portion and two spectra it refers anti ?? red light eyes were perceived as yellow light.Speaking of sunglasses associated with the light,the following three types of light are important.Direct light - (the sun,etc.),direct light directly hits your eye of light from the light source.Also a lot of direct light,will now appear the details blur surrounding environment,also to concentrate that it is difficult attention too.Reflection of light - glare of reflected light,in many cases,has a form-based.The reflected light of the reflected light back it will be reflected from the object to the eye.As with direct light,strong reflected light,will be that it is difficult details to appear in perception or object.

Venta al por mayor barata Nike Snow,water,glass,It is a white sand is a good reflective su***ce.Diffused light - After repelling the scattered light is directed in multiple directions,so diffusing light,the light does not seem to this particular source such.A typical example is the diffused light shine on top of the city.We are,it is difficult to determine a single source.In the absence of direct light,we can see something,which is a credit for diffusing light.Quality sunglasses,as people feel comfortable,the other (depending on the reflecting su***ce),it is possible to eliminate or reduce the reflected light,reduce the direct light,and can be eliminated UV spectra.An interesting feature is the polarization of the light.When the light is reflected from a particular su***ce,such as water,light is polarized.Polarization characteristics of the reflected light,polarized sunglasses,of the light-reflecting su***ce,can remove the reflections from such water.Staining lensSunglass lenses colored lens determines it is possible to absorb some of the light in the spectrum.The manufacturer uses different colors to produce a certain efficiencySunglassesSunglassesFruit.1,gray,while reducing the distortion of minimal color,good general color is brightness.Gray lens is driven and is ideal for general use,it will provide glare protection.While other frequencies to allow more light through the lens,2,golden and blue of the lens can be reduced.Blue light,it is possible to bounce a lot of dispersion can be obtained glare effect called blue haze.All objects,as will be bright and vivid display,in fact,the yellow is given,will be able to eliminate the blue portion of the spectrum.Anti-snow blindness generally,the reason for the yellow sunglasses is for this.Such colors,in order to identify a person in need of color perception accurate color activities,less such distortion not suitable for colored sunglasses will way.3,it is also a good general color of amber and brown.
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