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Sunglasses of this type are sometimes called mirrorshades. A mirror coating does not get hot in sunlight and it prevents scattering of rays in the lens bulk. Sunglass lenses are made of either glass, plastic, or SR-91. Plastic lenses are typically made from acrylic, polycarbonate, CR-39 or polyurethane.
Glasses. Glasses, also known as eyeglasses and spectacles, are vision eyewear with clear or tinted lenses mounted in a frame that holds them in front of a person's eyes, typically utilizing a bridge over the nose and hinged arms, known as temples or temple pieces, that rest over the ears. Glasses are typically used for vision correction, such ...
Wide-angle lenses for 35 mm format. For a full-frame 35 mm camera with a 36 mm by 24 mm format, the diagonal measures 43.3 mm, and by custom, the normal lens adopted by most manufacturers is 50 mm. Also by custom, a lens of focal length 35 mm or less is considered wide-angle.
Many glasses manufactured during this period tended to imitate popular metal eyeglass styles, with significantly thinner frames and vertically smaller lenses. The popularization of 1960s styles by the television show Mad Men led to horn-rimmed frames produced in the 2010s being more traditional, with large lenses and thick, heavy frames.
Around age 40 or 50, says Dr. Raviv, an age-related condition called presbyopia begins to affect many of us, preventing our natural lenses from focusing up close.
Shutter shades, also known as slatted shades, louvered shades, or Venetian blind shades are sunglasses that, instead of having darkened lenses, have horizontal slats similar to window shutters, which are an integral part of the frame. The shades are marketed as suitable for both men and women and are available in an assortment of styles and colors.
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related to: custom made lenses for sunglasses for women over 40 feet wide- 601 N High Street,, Columbus, OH · Directions · (614) 745-8101
I'm crazy about Warby Parker. I've bought 26 so far. - Oprah