Sunglasses or sun glasses are a form of protective eyewear designed primarily to prevent bright sunlight and high-energy visible light from damaging or discomforting the eyes. They can sometimes also function as a visual aid, as variously termed spectacles or glasses exist, featuring lenses that are colored, polarized or darkened. In the early 20th century they were also known as sun cheaters (cheaters being an American slang term for glasses).
Many people find direct sunlight too bright for comfort. During outdoor activities, the human eye can receive more light than usual. Healthcare professionals recommend eye protection whenever outside to protect the eyes from ultraviolet radiation (UV) and blue light, which can cause several serious eye problems. Sunglasses have long been associated with celebrities and film actors primarily from a desire to mask their identity. Since the 1940s sunglasses have been popular as a fashion accessory, especially on the beach.
There are three major sunglass standards, which are popularly known mostly as a reference for sunglass protection from UV radiation; the standards do, however, also include further requirements. A worldwide ISOstandard does not
yet exist, but by 2004, attempts to introduce such standard have led to a respective ISO standards committee, subcommittee, technical committee, and several working groups.[15] All standards are voluntary, so not all sunglasses comply, nor are manufacturers required to comply.
The Australian Standard is AS/NZ1067:2003. The five ratings for transmittance (filter) under this standard are based on the amount of absorbed light, 0 to 4, with "0" providing some protection from UV radiation and sunglare, and "4" indicating a high level of protection, but not to be worn when driving. Australia introduced the world's first national standards for sunglasses in 1971.
They were subsequently updated and expanded, leading in 1990 to AS 1076.1-1990 Sunglasses and fashion spectacles (incl. Part 1 Safety Requirements and Part 2 Performance Requirements), which was superseded in 2003
by AS/NZ1067:2003. The 2003 update made the Australian standard relatively similar to the European standard. This step opened the European market to Australian-made sunglasses, but the standard also maintained requirements considered specific to Australia's climate
The European standard EN 1836:2005 has four transmittance ratings: "0" for insufficient UV protection, "2" for sufficient UHV protection, "6" for good UHV protection and "7" for
"full" UHVV protection, meaning that no more than 5 % of the 380 nm rays are transmitted. Products which fulfill the standard receive a CE mark.
There is no rating for transmittance protection for radiation of up to 400 nm ("UV 400"), as required in other countries (incl. the United States) and recommended by experts.[7] The current standard EN 1836:2005 was preceded by the older standards EN 166:1995 (Personal eye protection –Specifications), EN167: 1995 (Personal eye protection – Optical test methods),
and EN168: 1995 (Personal eye protection – Non-optical test methods), which in 2002 were republished as a revised standard under the name of EN 1836:1997 (which included two amendments). In addition to filtering, the standard also lists requirements for minimum robustness, labeling, materials (non-toxic for skin contact and not combustible) and lack of protrusions (to avoid harm when wearing them)
The U.S. standard is ANSI Z80.3-2001, which includes three transmittance categories. According to the ANSI Z80.3-2001 standard, the lens should have a UVB (280 to 315 nm) transmittance of no more than one per cent and a UVA (315 to 380 nm) transmittance of no more than 0.3 times the visual light transmittance.
The ANSI Z87.1-2003 standard includes requirements for basic impact and high impact protection. In the basic impact test, a 1 in (2.54 cm) steel ball is dropped on the lens from a height of 50 in (127 cm). In the high velocity test, a 1/4 in (6.35 mm) steel ball is shot at the lens at 150 ft/s (45.72 m/s). To pass both tests, no part of the lens may touch the eye.
OVERSIZED SUNGLASSES FOR MEN 2010 TRENDS
Most women look good withoversized sunglasses.Mencan also look good with this style. It is without a doubt that these oversized sunglasses come a long way since they debuted in the early parts of the twentieth century. Their huge lenses which can occupy a large part of the face are well received since can be polarized or mirrored. There is a wide selection in the market nowadays to choose from. They are manufactured using either plastic or metal. They still dominate the fashion today because of its sheer elegance. We will discuss aboutoversized sunglasses for men in 2010 and find out why they are back in style.
If you still do not know about the image or look of oversized sunglasses for menthen you might as well look for pictures of Elvis Presley. Elvis is very fond of this glasses that were very popular during the late 70’s and early 80’s, and apparently they are becoming popular again in 2010. Generally, these glasses are wider at the outer rim of the face and narrower toward the nose, with lenses that are a straight line across the top.
Oversized Sunglasses Can Look Amazing
These shades come in various shape. They can come with rectangular lenses.They were often curved to fit around the face. Naturally, the corners of the rectangle were rounded off. Another variation was the square glasses. This shape employs the same concept of that of the rectangular lenses. The final shape of oversized sunglasses and probably the least popular shape but deserves mention here are the round sunglasses. They were not as popular as the other shapes for they did not last long and were worn only by a few people.
Metal frames became popular in the late 60’s with the rise of the Beatles. The oversized sunglasses also come in plastic frames, as mentioned a while ago. White and black plastic frames are the most popular.
Instead of those original glasses, girls now love men wearing those weird looking glasses. When I say “original”, I mean the ones that are normal, and glasses that are suitable for meetings…etc. I guess you’ll understand what I mean when I think men who looks stupid wearing these thick-rimmed glasses. But some girls just love them on guys! What do you think of these glasses on men?
Thick-Rimmed Glasses and a hat too?! Isn’t that a little over?
