MAKROLON is a polycarbonate that was invented and patented already in 1953 by chemist Hermann Schnell. The wide range of applications and a variety of advantageous properties make that this technical plastic of Bayer Material Science can be used in many products. MAKROLON is ideal for optical data from the CD to the DVD, as well as for medical equipment. MAKROLON is transparent like glass but much lighter.
It is the break and shock resistant, thermoplastic and does not deform under high temperatures. As you can also color and easily provide a scratch coating is especially well suited for the manufacture of glasses, prescription sunglasses and sports protective eyewear of high quality. Easy processability just mark limits to the possible designs and shapes, almost any fashion is workable. In the world of optics, Makrolon of high purity and quality LQ (Lens Quality)) allows a safe and optimal vision for glasses to work, sports and leisure.
Sunglasses and eyewear lenses: an invention for the cultural advancement
The invention of sunglasses as vision correction has been a cultural breakthrough for mankind. Although currently not is you can determine exactly when emerged the first optical AIDS, it is known that already in ancient times there were objects that were also used as Visual AIDS. Used balls of quartz that served as “reading stone” because with them was achieved increase the size of the letters. Requirements for glasses and lenses are higher today, as in an advanced society the eyes must be protected of particles and radiation visible and invisible, and in the workplace also corrosive chemicals. The sunglasses so functional scope is broad, goes from the simple sunglasses, through resistant to blows and breakage sports goggles to glasses high performance for work protection. Only the protective work glasses range from full, passing gas glasses vision goggles, antacids, welders, goggles, anti-radiation and laboratory, to combined corrective glasses. As material Polycarbonate, imposed because it is lightweight and can be carried comfortably even during long periods of time. Thanks to the possibility of providing a coating to the polycarbonate Makrolon as, the intended use of the glasses, as the UV absorption, an extreme scratch resistance, resistance to chemicals as well as a treatment lasting anti-fog lenses of plastic can be guaranteed. In recent years, the demands for labour safety glasses have risen considerably, so that safety glasses are becoming increasingly combined correction and safety glasses. Fine Bayer Texin plastic corrective lenses may represent an alternative to combined correction and safety glasses, because they are simply attached to sunglasses lenses. This economic variant also allows optimal protection and a good vision closely.
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More and more people rely on glasses also in sports and leisure activities. The ones using them as correction of vision defects, other them are consciously as eye protection to fashion or by its utility.Sporting sunglasses and Sun on current trends the colors are being imposed. The blue, red and yellow crystals, in addition to classic dark glasses, are particularly demanded. Crystals with colouring, also in vivid colors, serve to protect the eyes from harmful UV radiation. High quality sports sunglasses are adjusted precisely to the different weather conditions encountered during sports activities. Therefore, for practically any sport and the corresponding possible weather conditions there are glasses adequate with appropriate crystals. Makrolon materials guarantee the realization of the functionality and security. For example in case of good weather: cyclists often prefer the clear crystals for circular power without problems both at noon in the light of the Sun and in the afternoon with the sunset. To be prepared for all kinds of situations, some manufacturers, such as, for example, Uvex Sports, in cooperation with the manufacturer of plastics Bayer MaterialScience, also offer sport sunglasses with interchangeable in different colorations crystals. The crystals can be easily changed. This means cyclists in the morning they come out with a staining glass clear, at noon placed one more dark and at night perhaps only a glass without color. This involves eye lightening their work, as under strong sunlight dark glasses reduce eye fatigue and lengthen the ability to concentrate. In diffuse, like rain, fog or snow light, yellow or orange crystals allow better vision and sharper contrasts. Thanks to the filtering and the reduction of the blue component of the light, it is possible to have a particularly ‘natural’ view of the environment. Glare reduction is considered a reinforcement of contrasts, without affecting the peripheral vision. In sports, safety is important: sports Sunglasses made of Makrolon must overcome a demanding uvex laboratory impact test before considering that they satisfy high levels of quality demanded by manufacturers and researchers. These tests checks the extraordinary resistance of this material. Simulates an impact of stone on the material at a speed of nearly 45 m/s.
Plastic instead of glass – Makrolon as a safe alternative
Originally only glass was used for the production of lenses for eyeglasses. Glass, an organic material that, at low temperatures, is rigid and brittle, can be manufactured in the most diverse qualities, adding chemicals to a mixture base fused quartz sand, which can also be made for the manufacture of glasses glasses.However, the glass has some decisive disadvantages against the plastic.It is quite heavy and it can be processed as well as, for example, a polycarbonate Makrolon as. In addition, a fall with glasses, normal or sports, glass is comparatively more dangerous. Glass breaks the first impact on hard materials and can be fragmented into thousands of pieces and pieces of glass that can cause serious injury. The first plastic that was employed as a glasses lens was marketed in the 1940s under the name “organic glass” and is included in the category of the thermosetting materials. The elaboration as glasses was done in a process of brewing between surfaces of glass polished optically. In the mid-1980s, a special version of the polycarbonate Makrolon from Bayer in “Lens Quality” turned out to be the ideal material for the realization of sports sunglasses and Sun of high quality as well as lenses for conventional mounts to read.
Modern sports polycarbonate glasses – functionality and safety at the highest level
Easy processability of the material is another advantage in their favor. All versions Makrolon LQ can be processed in an economic process of molding by injection, manufacturing glasses in one piece. Complex geometries can also be performed without problems, there are no limits to the design of forms. Also the corrective lenses for nearsightedness or farsightedness are manufactured as well. Corrective lenses are manufactured as a finished lens or lenses in the rough. Just polishing them according to instructions from the ophthalmologist or optical to make them fully functional. When the lightweight polycarbonate Makrolon replaces the heavy glass it shows at the time lead glasses. Even the current trend towards rimless glasses is no problem, because Makrolon lenses endure drilling without break.
In addition here is especially advantageous the Crashworthiness of Makrolon, these glasses, in case of impact on the ground, are not protected by a mount and therefore must be especially stable, that Yes, with a complete view.