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How to choose the frames? (2)

QQ图片20180925101156
3, On the logo - look at the material.
Many frames will be framed on the temples, especially the precious metal frames of gold and titanium. Let's take a brief look at their logo.
(1) GF/GP: GF is a gold-clad frame, which is a frame obtained by welding thin gold sheets on other metal substrates; GP is a gold-plated frame, that is, gold is plated on other metals.
(2) Ti-P/Ti-C: Ti is a mark containing a titanium material, Ti-P represents pure titanium, and Ti-C represents a titanium alloy or the like.
QQ图片20180925101241By the way, what is the difference between titanium, titanium alloy, beta titanium, and memory alloy?
A. Pure titanium.
Titanium metal materials with a purity of more than 99% of titanium can be used as pure titanium glasses. The frame made of pure titanium material has excellent characteristics such as high melting point, light material, strong corrosion resistance and firm plating layer, which can ensure the two important performances of the eyeglass frame beautiful and durable.
B. Beta titanium.
It can be understood as another molecular state of titanium. Although the purity of β-titanium cannot be compared with that of pure titanium, its properties such as strength, fatigue resistance and environmental corrosion resistance are better than those of pure titanium.
C. Titanium alloy.
The definition of titanium alloy is relatively extensive, and any titanium-containing material may be referred to as a titanium alloy. Therefore, the quality and grade of titanium alloy frames are uneven, and the direct influence on the price of titanium alloy glasses is the composition of titanium alloy. The use of titanium alloy for making glasses is not to reduce costs, but to improve the application performance of materials.
D. Shape memory alloy.
Made of nickel, titanium, vanadium and other metals, it has superior elasticity. If the temples encounter external forces, the bending degree can exceed the BETA-titanium alloy and can be restored to the original state. Therefore named as shape memory alloy.
The difference in titanium prices is not just price, but more importantly, they each have unique processes and product properties. Therefore, it is not the frame of the material that the price is relatively high.
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In recent years, there is also a TR material that is particularly popular.
TR90 is a memory polymer material that weighs less than half the weight of the frame. It reduces the burden on the nose and ears and makes it lighter and more comfortable to wear. The color is brighter and brighter than the ordinary plastic frame.
Impact resistance: Effective to effectively prevent damage to the eyes caused by impact during exercise.
High temperature resistance: It can withstand high temperatures of more than 300 degrees in a short time, and is not easy to melt and burn. The frame is not easily deformed and is not easy to change color, and the frame is worn longer.
The TR100 is an upgrade board for the TR90. Has a memory function.
The material is light and can float on the surface of the water, reducing the nose and the weight of the ears. It is elastic, stretched or stretched and then relaxed. It will quickly return to its original shape, not easily deformed and broken, and the frame is colorful. Stylish and easy to wear, it combines heavy and metallic textures.
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After finishing the choice of frames and lenses, and then send you two small reminders.
A. optometry once a year
It is recommended that you need to re-opt the optometry every time you change the glasses. It is best to go to the ophthalmology department or professional optical shop of each hospital. In addition, with new glasses optometry, it is best to bring your old mirror, for the optometrist to make reference.
B. One pair of glasses changed two to three years
The average life cycle of glasses is two to three years. Ordinary myopia patients generally recommend to change glasses once every two years, because the degree may change, and second, because the mirror lens will wear scratches or film peeling for a long time, once the scratches are serious, it will obviously affect its optics. Corrective performance, continue to wear is not good for the eyes. Therefore, it is necessary to regularly maintain and inspect the glasses and replace them in time.
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