Different types of nose pads for glasses
The fixed nose pad is usually used on the plate frame. The nose pad and the frame form an organic whole. The maintenance is more convenient, unlike the movable type that should often twist a screw. It is not easy to hide dirt and dirt. But the disadvantage is that the angle of the nose pad can not be adjusted, and it can not fit the bridge of the nose greatly. The movable nose pad can be automatically adjusted up and down according to the shape of the bridge of the nose to ensure that the compression part of the bridge of the nose is evenly stressed and the local pressure is reduced. But the disadvantage is to often check the tightness of the screw, but often scrub clean. The silicone material usually used in the nose pad is easy to yellow after a long time, which affects the appearance.
Sunglasses For Fishing - Prosun
The headquarter of Prosun?is located in Xiamen City, Fujian Province. ?In the development process of more than 20 years, Prosun?has been committed to the research and development of optical products. The product design style has closely followed the trend, and the quality materials have useful workmanship. And the comfort is continuously improved, with the combination of fashion design concept and science. It is committed to providing young people's favorite glasses products.
Do you need to wear glasses to drive?
In the evening, lights from street lamps, buildings, and other vehicles create a lot of reflection on the windshield, making it hard to see. It's even worse when it rains. But if your glasses have an anti-reflective coating, they can reduce the glare and reflections, allowing you to see more clearly while driving at night.
Lunor - Glasses For Men
Many of Lunor's metal frames are made from high-quality titanium, gold, and stainless steel. In addition to the special process of making titanium, all-metal frames are made by hand in a factory in Germany, fully reflecting the craftsmanship and thought behind the production of the brand. The texture and professional demeanor of the glasses are strong. The brand is very good at combining classical and modern. What we can see is that the nose pad and the frames are made of pure titanium, so there's no allergic effect.
About industrial pure titanium
For the industrial pure titanium, titanium content is not less than 98%, containing a small amount of oxygen, nitrogen, hydrogen, carbon, silicon, and iron impurities such as dense metal. The labels are TA1,TA2,TA3,TA4. It's arranged by more and more impurities. The TA1 titanium content is more than 99.5%, and the price is not high. But no matter which links, for molding, welding, polishing, processing difficulty is very great.The price of almost all titanium alloys in the national standard is higher than that of pure titanium.
In reality, the price of β titanium is higher than pure titanium. Pure titanium is almost no elastic, but β titanium is not only elastic, and has the advantages of ultra-light corrosion resistance. β titanium does not have a specific composition. Memory titanium can cost tens or even tens of times as much as pure titanium.
Using memory alloy to make glasses frame is the use of its superelastic characteristics at a certain temperature (elasticity is several times that of stainless steel) and did not use its memory function. Compared to beta-titanium, memory titanium is so difficult to process. It is so elastic that shaping is difficult and impossible at room temperature, and memory titanium heat treatment is another difficult and even secret process.
Many optometrists have problems adjusting their frames almost daily. In the eyes of the customer, it is simple to use tools, but in reality, the technology involved is pretty important. It is no exaggeration to say that a good pair of glasses and optometry, collocation is equally important. If the customer's optometry parameters are normal, and glasses collocation is accurate, but wearing is not comfortable. So the collocation of glasses is very key, and many problems can be solved by the collocation of glasses.
Understand the impact of frame selection on the lens
Frame size is an important consideration when using progressive lenses because some progressive lenses work better in frames of different sizes. Since progressive lenses allow you to see at all distances, it's important that the whole range of vision fits within the frame. Therefore, very short lenses and larger lenses are not suitable for progressive lenses.