What are the characteristics of a titanium frame?
The so-called pure titanium, titanium refers to the purity of more than 99% of the titanium metal materials. To tell if a pair of glasses frame is pure titanium, we look at its purity. Because of the high melting point of titanium, lightweight, strong corrosion-resistance, used for the frame, they can wear for a long time, and will not let the bridge of the nose have a sense of pressure. But its disadvantage is that the material is soft, and only the relatively rough frame lines are made to ensure the stability and strength of the frame. Titanium frame has the advantages of corrosion resistance, acid and alkali resistance, high stability, good elasticity, good toughness, not easy to deform and fade. General glasses frame contains copper, so when we wear for a long time .it will produce verdigris, namely, copper sulfate. It is a toxic substance and is harmful to the human body. Because pure titanium tends to be soft, copper has to be added to make the frames more stable, which is why the frames have to be replaced over time.
What Are Polycarbonate Glasses?
Polycarbonate was developed in the 1970s for aerospace applications and is currently used for the helmet visors of astronauts and for space shuttle windscreens.
Polycarbonate lenses were introduced in the early 1980s in response to a demand for lightweight, impact-resistance lenses. Since then, polycarbonate glasses have become standard for safety glasses, sports goggles and children’s eyewear.
Polycarbonate glasses are thinner and lighter than regular plastic lenses. They also provide 100 percent UV protection and are up to 10 times more impact-resistance than plastic or glasses lenses.
In addition, Polycarbonate lens provides clearer and more comfortable vision if anti-reflective coating is applied to the lenses, which can eliminate distracting lens reflections that interfere with vision, particularly when driving at night or in other low-light conditions when glare sources are present.
After learning some basic information about polycarbonate glasses, we will show you the advantages and disadvantages of polycarbonate lens.
OMBRE & TWO-TONED GLASSES
Gradient glasses and double-color glasses are popular for their visual appeal and ability to match almost anything in your wardrobe. Typically, these frames start darker at the top and then transit gently or abruptly to lighter shadows. Professional and fun all in one frame style.
Characteristics of titanium frames
Titanium is widely used in the eyewear industry because it is not easy to deform, fade and has strong stability. The glasses frame made of titanium can highlight the noble taste and elegant temperament. The glasses frame made of titanium can be divided into pure titanium, titanium alloy, and beta-titanium frame three kinds. To learn about titanium frames, how to identify pure titanium frames?
Titanium frame has the benefits of low density, high strength, good mechanical properties, and strong corrosion resistance. The frame is very light and not easily corroded by moisture. However, due to the poor process performance of titanium alloy, machining is very difficult, the glasses frame made of hydrogen, oxygen, nitrogen, carbon, and other chemical impurities are more absorbed. The wear resistance of titanium alloy is relatively poor, and the production process is relatively complex, so the cost is relatively high and the workmanship is relatively complicated when using this material to make the spectacle frame. The price is much more expensive than the common spectacle frame.
Sunglasses For Different Face Shapes
The round face is what we usually call the babyface. The facial lines are relatively round. What kind of sunglasses is suitable for people with this face shape? First of all, you cannot choose a large lens. It does not mean that a large lens can cover a big face. You should choose a dark square lens. A round face and a round frame are both enemies. And putting them together will make a person's face look rounder, so try to avoid round frames.
For the square face, the cheekbones and the angle of the mandible are relatively square, and the chin is shorter and well-defined. This kind of face shape must first avoid square frame sunglasses because it will make the face wider. You can choose dark square round sunglasses and cat-eye sunglasses, you can also choose a long and narrow line of aviator sunglasses, the width of the frame is slightly larger than the width of the face.
The long-faced people should choose big sunglasses that can cover the face, and shorten the face. Also choose a darker color, which has a good occlusion effect. The Aviator sunglasses are the most friendly style for people with long faces.
The oval face is also the most popular oval face, the traditional beauty face. The young lady with this face shape can choose sunglasses at will. There are no defects to cover, so you can choose boldly and safely. But don't choose which ones are particularly exaggerated, which are too eye-catching.
The best way to choose sunglasses is to go to the optician to try them on. According to your own preferences, try a variety of styles so that it is easier to see which one is more suitable for you. There are a lot of sunglasses for us to choose from. In order to enhance our beauty, we must choose the most beautiful sunglasses that suits us.
How do bifocal reading glasses work?
Bifocal reading glasses have two different lenses on the same lens. The top of the lens is your normal distance prescription, while the bottom is for close-up viewings, like reading. The two lenses allow you to alternate between them by moving your eyes up and down as needed. A bifocal lens is a type of lens that has two different areas of vision: one for close range and one for long-range. Typically, the upper section covers remote vision and the lower section covers reading. With a traditional bifocal lens, you can see the difference between the two lenses because the lower curve is a little different.
Comfort of Glasses
The most important thing when shopping for glasses is comfort. When you choose, you must try it on to see if you feel any discomfort. Whether the glasses can be well put on the upper part of the bridge of the nose, and whether they are light enough and will not cause any burden on the opposite side. In addition, you must see if there is any feeling of dizziness.
