Characteristics of Carbon Fiber Glasses
Carbon fiber frames have pretty impact resistance. Carbon fiber is made of carbon, the core element of diamonds. It is ten times stronger than iron, and it weighs less than steel. The maximum stress it can withstand before breaking is 7 to 9 times that of steel. Carbon fiber is more resistant to corrosion than metals like titanium. It has high-temperature resistance, radiation resistance, good elasticity. Carbon fiber is not only flexible, but durable, so it won't break if you drop it. Carbon fiber has many benefits, including high stiffness, high tensile strength, low weight, high chemical resistance, high-temperature resistance, and low thermal expansion.
Does the titanium frame cost a lot?
It can be decided according to the titanium frame technology, design, and specific material. Titanium-nickel shape memory alloy, titanium alloy, β titanium alloy frame belong to the high-end consumer goods, and the price is generally more than 300. In recent years, with the improvement of people's living standards in China, the domestic demand for titanium frames is expanding rapidly, and there are many manufacturers of titanium frames in China, but all the raw materials are still imported from Japan. Up to now, there are very few manufacturers that develop and produce titanium glasses frames by themselves in China. The production of β titanium alloy wire used in the frame is in the stage of development in China.
Put into the lens box when not in use.
When taking off glasses, many people will easily hang them on the head, collar, or casual display, so that glasses often suffer a variety of damage. To do this, fold the glasses and place them face up in the case. Do not place your glasses in direct sunlight or in high temperatures, as heat can easily peel off the film on the lens. For example, in summer, the glasses are exposed to direct sunlight in the car for a long time, which is easy to cause lens stripping.
Reading Glasses
At present, there are two prescriptions for reading glasses. One is to adjust the power of glasses with clear objects at close range, plus 1/3 of the power for adjustment. The other is to use low power that can see close objects clearly. The practice of many elderly people has proved that the latter one is better between two methods.
Accurate optometry is key.
Optometry before wearing glasses is very key. Children's optometry should choose mydriasis optometry. Mydriasis optometry is a method of optometry designed specifically for children. It works by using drugs to completely paralyze the ciliary muscle of the eye so that it loses its regulatory role. So you can check out the child is true myopia or pseudomyopia. During optometry, you should pay attention to let the child as far as possible to relax, so as not to affect the effect of optometry. For the sake of children's health, it is recommended that parents and friends can take their children to a professional optometry place to choose glasses. In addition, do not rely solely on optometry to determine the child's glasses, but to see which degrees are more suitable.
Why are eyeglass frames are so expensive?
The industrial chain has factories, brand owners, regional general agents, retailers. Each link needs to share the risk and profit. They have high operating costs. In addition to the well-known rent, they have the costs of labor, decoration, and so on. There is another important reason. It is the inventory loss because of the style problems. This aspect of the cost must be amortized. From the structure and appearance design of the glasses frame, the development and application of raw materials, processing technology, to manufacturing equipment and procedures, the actual cost may be much higher.
Identify reliable online stores
Online stores division of labor has customer service, processing, packaging, warehousing, after-sales service, operation, art, etc. For processing accuracy, although the equipment is now much higher than before, as long as it is artificial, there will be errors. Even with the highest Essilor automatic grinding machine at present, it is possible to produce errors when the center point and the suction cup are manually operated. After processing is completed, a responsible shop will recheck the number. If the error is large, it must be reconfigured. The formal glasses mall can ensure that the true lens and this is the basic point of a good pair of glasses. Find reputable brands that are proven and believed by most consumers. The online shops should have perfect pre-sale and after-sales service. Professional pre-sale service can give professional guidance.
