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  • Cheap Oakleys Sunglasses,fake Oakley Sunglasses Outlet

    Cheap Oakleys Sunglasses,fake Oakley Sunglasses Outlet

    cheap oakley Sunglasses can shield uncomfortable light and protect eyes.

    04:55, Thursday 28 June 2018 .. 0 commentaires .. Lien Permanent
    Damage by ultraviolet light. All this is attributed to metal powder filters, which can be "selected" when light is injected. Colored cheap oakley sunglasses selectively absorb part of the band that makes up the sun's rays, because it uses a very fine metal powder (iron, copper, nickel, etc.). In fact, when the light is shining on the lens, the light is reduced based on the so-called "interference interference" process. That is to say, when some wavelengths of light (which refer to ultraviolet A, ultraviolet B, and sometimes infrared) through the lens, the inside of the lens is toward the eye, and they counteract each other. The overlapping of light waves is not an accident: the wave peaks of a wave are combined with the trough of the wave near them, which results in mutual cancellation. The phenomenon of destructive interference depends on the refractive index of the lens, that is, the degree of deviation when the light passes through the different substances in the air, and also depends on the thickness of the lens. Generally speaking, the thickness of lenses varies little, while the refractive index of lenses varies according to chemical composition. Polarizing glasses Wear effect of polarizing glasses Polarized fake oakleys provide another mechanism to protect the eyes. The reflected light of asphalt road is a special polarized light. The difference between the reflected light and the light coming directly from the sun or any artificial light source is the order problem. Polarized light is formed by waves that vibrate in one direction in one direction, and the general light is formed by waves of non directional vibration. It is like a group of disorderly and random walks with a group of soldiers marching in neat steps. Generally speaking, reflected light is an orderly light. Polarizing lenses are particularly effective in blocking this light, because its filtering function is playing a role. Such lenses only allow polarized waves to vibrate in a certain direction, just like "Combing" the light. For the problem of road reflection, using polarized glasses can reduce the transmission of light, because it does not pass light waves parallel to the road. In fact, the long molecules in the filter layer are oriented horizontally and absorb horizontally cheap fake oakley sunglasses light. In this way, most of the reflected light is eliminated, and the ambient illumination is not reduced. Discoloration glasses The lenses of color changing glasses can be darkened after the sun rays are coming. When the illumination is weakened, it becomes bright again. The reason for this is because the crystal of silver halide is at work. Under normal circumstances, it keeps foakleys lenses perfectly transparent. Under the sunlight, the silver in the crystal is separated, and the silver in free form forms small aggregates inside the lens. These small silver aggregates are interlocking and irregular blocks. They can not transmit light, but can only absorb light. The result is the lens darkening. In the case of light and darkness, crystals are reformed and the lenses return to the bright state.

    how to choose cheap sunglasses oakley and ray ban

    04:31, Thursday 28 June 2018 .. 0 commentaires .. Lien Permanent
    1, the human body has an instinctive response to self protection. When the eye meets the strong light, the pupil will become smaller and the ultraviolet energy of the eyes is reduced. Once you wear oakley Cheap sunglasses that have no anti ultraviolet function, the pupil will be magnified, and the glasses are not used to isolate the ultraviolet rays. At this time, the eyes are open to the portal and let the eyes open. Ultraviolet rays can cause damage to the eyes.
    2, Cheap oakleys can prevent ultraviolet light, because the lens is added a special coating on the lens, and the inferior Sunglasses not only can not stop the ultraviolet light, but also make the lens transmittance seriously decrease and make the pupil larger, but the ultraviolet rays will be shot in a large amount and damage the eyes. In addition, poor lenses also cause nausea, forgetfulness, insomnia and other visual fatigue symptoms.
    3, the color of the sun lens is light grey, tea color or light smoke color, followed by green, amber, blue and so on. Red is used only as sunbathing or snow.
    4. The best way to ride a car is to use polarized sunglasses, because they can weaken the glare of glare.
    5, if you wear fake oakleys, others can see your eyes very clearly, so your lenses are too light.
    6, when the sun goes down, it is best to remove sunglasses. Otherwise, we will suffer from poor eyesight.
    7, we should choose regular manufacturers to produce Sunglasses with UV protection function.
    8. Pay attention to the surface of the lens.
    9, when ***ing sunglasses, you can judge whether the objects are clear. To *** quality sunglasses, the only thing you can do is to *** Sunglasses in optical specialty stores and regular optical shops.
    10, face modification:
    (1) round face: you need a straight or angular frame to weaken your outline. Please choose a deep, implicit color to reduce the feeling of obesity and make the face look more exquisite.
    Square face: Contrary to round face, you need some rounded corners and streamlined frames to foil your extraordinary temperament.
    Triangle face: please try to avoid large frame and square frame as far as possible, because it will look more wide and narrow on the face, using fine frame, round frame, bright color is the best.
    Oval face: you are naturally suitable for desk sunglasses. No matter what style is very suitable for you, pay attention to the size ratio.
    Rectangular face: you are the most suitable for the large frame cheap ray ban sunglasses, which can make up the small shortcomings of the face, make the face look more beautiful, color is mainly dark color.


    oakley sunglasses outlet Classification of use

    04:13, Thursday 28 June 2018 .. 0 commentaires .. Lien Permanent
    Sunglasses are generally divided into three categories: sunshades, light sunglasses and special purpose Oakley sunglasses cheap.
    The so-called sun shading mirror, as the name implies for sun, people in the sun usually by adjusting the size of the pupil to adjust the light volume, when the light intensity exceeds the human eye adjustment ability, it will cause harm to the human eye. So in outdoor activities, especially in the summer, many people use fake Oakley sunglasses to shield the sun, so as to reduce the damage caused by eye adjustment fatigue or strong light stimulation.
    Light sunglasses do not block sunlight better than sun shades, but they are rich in color and are suitable for use with all kinds of costumes. They are very decorative. Light colored fake ray ban sunglasses are favored by young people because of their rich colors and diverse styles. Fashionable women are more fond of them. Special use sunglasses have very strong function of shielding the sun light, often used in the beach, skiing, mountain climbing, golf and other strong field of sunlight, its anti ultraviolet performance and other indicators have high requirements.
    Different people choose Sunglasses based on different preferences and different uses, but the basic principle is to ensure the safety of the wearer and the basic principle that the vision is not damaged. It is the basic function of sunglasses to reduce the intensity of light stimulation, clear and undistorted objects, prevent ultraviolet, color recognition and identify traffic signals accurately. If the above function is defective, the light will lose the role of sunglasses, the weight will produce dizziness, eye distension and other self-conscious symptoms, and sometimes can produce slow reaction, delusions of color and the unequal symptoms of walking objects and traffic accidents. So choosing cheap ray bans should not only focus on style but ignore its inherent quality.


    cheap Oakleys function

    04:04, Thursday 28 June 2018 .. 0 commentaires .. Lien Permanent
    A pair of sunglasses looks very simple, that is, there are two pieces of colored glass or plastic in some plastic or metal frame. Is there anything more simple than this? In fact, two glass lenses can produce many differences. When you use Cheap oakleys, these differences will also have a great impact on you.
    Effect
    Ultraviolet rays can damage the cornea and retina, and high quality sunglasses can completely eliminate ultraviolet radiation.
    When the eye receives too much light, it naturally contracts the iris. Once the iris contracts to the limit state, then people need to squint. If the light is still excessive, such as the reflected sunlight from the snow, it will damage the retina. High quality sunglasses can filter up to 97% of the eye rays to avoid injury.
    Some surfaces, such as water surfaces, can reflect large amounts of light, and the resulting bright spots will disturb the line of sight or hide objects. High quality fake oakley sunglasses can completely eliminate such glare with polarizing technology. We will introduce polarizing technology later.
    Certain frequencies of light can obscure the line of sight, while other frequencies of light can enhance contrast. Choose the right color for sunglasses, so that it can get better results in a specific environment.
    If knockoff oakley sunglasses do not provide UV protection, it will expose you to ultraviolet radiation. Cheap sunglasses filter out part of the light, causing your iris to open to receive more light. This will also allow more ultraviolet rays to enter, increasing the damage caused by ultraviolet rays to the retina.
    Therefore, there is indeed a difference between sunglasses. Choosing the right and high-quality sunglasses will provide you with the greatest protection for a specific environment.
    According to international standards, fake oakley sunglasses free shipping are classified as personal eye protection products. The main function of sunglasses is to cover the glare of the sun. However, international standards also subdivide sunglasses into "fashion mirrors" and "general purpose glasses". The quality requirements of "fashion mirror" are relatively low in the standard. Because fashion mirror is mainly about style, wearers focus on decoration rather than protection. In the standard, the quality requirements of general purpose mirrors are relatively strict, including requirements for UV protection, diopter and prism.


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