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.
Where to Buy Cat Eye Glasses?
Do you know where to buy the cat eye glasses or prescription cat eye glasses? To buy cat eye glasses, here is a choice for you. You can choose to buy them from Koalaeye Optical, which is an online optical store. It provides all kinds of eyeglasses, sunglasses and frames, such as blue light blocking glasses, progressive glasses, polarized sunglasses, and so on. It also provides cat eye glasses and prescription cat eye glasses.
Besides, Koalaeye Optical offers different colors of cat eye glasses. So, you can choose the best one for you. In addition, Koalaeye Optical provides free shipping service.
Why do spectacle frames rust?
Before solving this problem, we can first understand the causes of rust spots on the frames and skin allergies due to rust spots. Many alloy products in daily life contain nickel, and direct contact with the skin will cause allergies to sensitive people. The temples and nose pads are the parts that contact the skin with a large area, especially the outer surface of the metal frame and the interior of metal containing a large amount of nickel. Through contact with the skin and erosion of sweat, the appearance of rust spots and skin allergies are caused. Once allergy occurs, it will cause contact dermatitides such as redness, swelling, itching, and yellow water on the surrounding skin.
What is a progressive lens?
A progressive lens is a lens whose upper sides are used to see far, and the lower side is used to see near. The distance from the fixed distance power above the lens to the near power fixed below the lens does not change suddenly, but a gradual transition between the two through the gradual change in refractive power.
Standard progressive lenses are multifocal lenses with three observation areas, farsightedness, intermediate vision, and nearsightedness. Unlike bifocals, there are no visible lines between each viewing area. They have a seamless, invisible design, where the optical power changes 'gradually' throughout the lens. Many people confuse 'bifocal' or 'trifocal' with 'progressive' but remember that bifocals and trifocals have visible lines in the lens, while progressive lenses do not. Because progressive lenses have no lines in the lens, they are more popular multifocal lenses than bifocal lenses. However, is progressive lens good for eyes?
Apart from memory metal frames, what other frames are the most durable?
Nylon plastic frames are the most durable frames available. It is hypoallergenic and flexible. But they are easier to break than metal frames, and their overall strength is reduced by sunlight and the aging process. Titanium and titanium alloy metals are used to make some of the most durable frames. Their strength can be compared with that of stainless steel, but titanium frames provide more options than stainless steel in terms of texture, pattern, and color.
The arm length is an important part of the size of the glasses.
Spectacle frames are standard optical products. Just like people's clothes and shoes, they all have their own size. Usually, specs for the size of the glasses are on the inside of the temple, on the bridge of the nose, or on the label. In general, the frames of the glasses are marked with the width of the frames, the width of the bridge of the nose, and the length of the arm. For example, the inner side of the temple is labeled: 52口 18-135, indicating the lens width of 52mm, the width of the nose bridge of 18mm, and the arm length is 135mm.
The resurgence of celluloid glasses
However, in recent years, celluloid glasses have quietly returned to warm; It all started with a niche Japanese brand of handmade eyewear.
Most of Japan's top hand-made celluloid glasses are made in Mako Prefecture and are a favorite of many celebrities. Celluloid is a plasticizer with nitrocellulose as the main raw material. Cotton, pulp, and other fibers make up 70% of the raw material, which is mixed with camphor. Although the color is relatively limited, it has a unique material texture and texture, so Japanese handmade frame makers have been insisting on using it. Moreover, because celluloid is pretty stable when it dries, it can be shaped into a finer shape, keeping the frame intact even without metal leg cores.