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​How To Use Metal Sunglasses
Jul 01, 2017

How to use Metal Sunglasses
Lens manufacturers say that is generally not a professional person, the selection and acceptance of Metal Sunglasses a bit confused, how to choose Metal Sunglasses lenses and frames, acceptance of Metal Sunglasses are qualified, from the following aspects to understand and identify
First, the frame material:
Metal Sunglasses frame material is a common metal alloy frame, high nickel alloy metal frame, light titanium or titanium alloy metal frame, injection molding of ordinary plastic frame, sheet plastic frame, carbon frame and metal plastic mixed frame. These different material frames have different characteristics:
Ordinary metal frame new, cheap;
High nickel alloy metal frame with high elasticity, but some people's skin prone to allergies;
Titanium and carbon material frame is light but expensive; injection molding rack cheap and fresh color; plate frame is not easy to deformation but more expensive.
Second, the frame style:
Metal Sunglasses frame of the numerous styles, different shapes, from the overall points to the whole box, half frame and frameless three categories, the shape of pear-shaped, drop-shaped, oval, egg shape, rectangular short square, polygon, Frame style can be used with their own face after the visual effects produced by the comfort of the principle of whether, with the gradient when the multi-focus mirror, should not use the drop-shaped or square-shaped frame.
Third, the frame quality:
For the quality of the frame, the frame manufacturer said that the average consumer can observe the coating finish, the solder parts of the finish, the symmetry of the frame, the nose is straight, straight and other appearance quality. In general, the quality of better frame prices are relatively high, if the lens of the brand is the brand of clothing, the price is often higher.
Fourth, the quality of the lens:
Metal Sunglasses is a direct use of optical tools to correct the human eye vision, Metal Sunglasses manufacturer. What type of consumer choice of what kind of Metal Sunglasses will directly affect the effect of glasses.
High myopia and hyperopia patients should buy high refraction green n = 1.70,1.80 or even 1.90 of the lens to reduce the thickness of the lens, but not to buy color lenses;
Children should choose to buy optical resin lenses to ensure the safety of wearing;
General myopia patients (most of our glasses) should be accompanied by slightly red optical red film or slightly blue and purple optical can be Secretary to ensure that most of the UV blocking the human eye damage;
Water crews use polarized scenes.
In order to increase the light transmittance, improve the visual clarity, optional film lenses.
Double light and gradient multifocal lenses are purchased in the elderly consumers of the lens, which is characterized by a pair of Metal Sunglasses can see the staff can see near. However, the dual lens as the image of the current jump, to the wearer to bring discomfort and inconvenience;
And the gradual focus of the multi-focus lens is to gradually change the principle of the lens focal length to achieve both far and can see the purpose of the near, so that wearers feel very comfortable.
In the purchase of optical resin lenses, should distinguish between a variety of different materials made of resin lenses, the material is thermoplastic, cheap but brittle, low-grade sunglasses and aging mirror with the film.
CR-39 is the most commonly used optical resin lens, the refractive index of 1.499, lower than ordinary glass, so the same degree and diameter of the lens compared to its thickness than ordinary glass is thicker.
There is also a resin called PC lens, has a very high impact resistance, with a hammer to hit will not break, but its biggest drawback is the surface is very easy to wipe hair. Refractive index greater than 1.499 resin lenses are mainly 1.56 in the refraction and 1.60,1.70 high refractive lens, they are higher prices.
Optical resin lens is the most important feature is light, so give consumers, especially high refractive error patients with wear comfort, and the biggest drawback is the surface easy to wipe, poor durability.
Fifth, the acceptance of Metal Sunglasses:
Metal Sunglasses factory sales staff that consumers do not ask, there is no professional test knowledge, so the use of Metal Sunglasses acceptance method can only be the most primitive, the most intuitive, that is, wearing Metal Sunglasses feeling. If the mirror after the object is both clear and comfortable, and long time not fatigue (60 years old or older), then the Metal Sunglasses should be considered good, is in line with your physiological requirements of the eye, on the contrary, then the Metal Sunglasses There is a problem that does not meet your requirements