Mirrored Sunglasses
Mirrored Sunglasses
Mirrored sunglasses are sunglasses with a reflective optical coating (called a mirror coating or flash coating) on the outside of the lenses to make them appear like small mirrors. The lenses typically give the wearer’s vision a brown or grey tint. The mirror coating decreases the amount of light passing through the tinted lens by a further 100%, making it especially useful for conditions of sand, water, snow, and higher altitudes. From a psychological perspective, mirrorshades are effective in preventing eye contact.
In principle, mirrorshades act as one-way mirrors.
The color of the mirror coating is independent of the tint of the lenses. It is determined by the thickness and structure of the layer.
<a href=”http://www.himfr.com/buy-wire_ribbon/”>wire ribbon</a>Their popularity with police officers in the United States has earned them the nickname “cop shades”. The two most popular styles for these are dual lenses set in metal frames (which are often confused with Aviators), and “Wraparound” (a single, smooth, semi-circular lense that covers both eyes and much of the same area of the face covered by protective goggles, combined with a minimal plastic frame and single piece of plastic serving as a nosepad). Wraparound sunglasses are also quite popular in the world of extreme sports.
The simplest version of a mirror coating is a single layer of a deposited thin film of a suitable metal, usually prepared by ion beam deposition, sputter deposition or vapor deposition. However, this kind of coating is very prone to scratching, and degrades, especially in a corrosive environment like salt water.
More modern reflective coatings usually have several alternating layers of specific thickness, made of dielectric materials and sometimes metals. The metal layer can be made from eg. titanium, nickel or chromium, or from an alloy like Nichrome or Inconel, and has thickness ranging from 0.5 to 9 nanometers. The dielectric layer comprises a suitable oxide, eg. chromium oxide, silicon dioxide, or titanium dioxide; its thickness determines the reflective properties of the resulting dielectric mirror. The manufacturing process is similar to making anti-reflective coating, and mirror and antireflective coatings can be deposited in the same sequence of operations.
Characters in cyberpunk frequently wear mirrorshades. They are also popular among US police officers, especially Highway Patrolmen. Many characters in the movie series The Matrix exclusively wear mirrored sunglasses, Morpheus in particular.
About the Author
Himfr is a scholar, focusing his research on Chinese cultures. If you are interested in purchasing China goods, please visit www.himfr.com
| | Rearview Spy Glasses Mirror Vision – See What’s Behind You! $2.09 These spy glasses make it so you can see behind you. Each lens has a mirror finish on the side so you can see what is behind you and in front of you. Adult sized and quality manufactured…. |
| | Bed Prism Spectacles $15.97 Enjoy Reading in Bed or Watching TV While Reclining — Read a book without eye fatigue or physical strain or watch TV in horizontal comfort. Precisely aligned glass prisms show half a page of an average hard-cover book. Bed specs are lightweight – you will hardly know you are wearing them! — Ideal for traveling or patients in bed. –… |
| | Rear View Sunglasses $1.59 The special secret coating gives you “rear vision”. You can spy on stuff behind you! These specially made sunglasses have a mirror on each side allowing you to see whats going on behind you. Very cool sunglasses for any age. Kids love using them along with teachers to keep an eye on students. You can also use them as cool looking sunglasses. UV400 meets general purpose UV requirements…. |
| | Polarized clip-on flip-up plastic sunglasses – true rectangle – 51mm Wide X 29mm High (113mm Wide) – Available in Polarized Gray $12.95 The Traditional Lens (Grey) These lenses allow in 87% of visible light. Gray lenses transmit light evenly allowing the wearer to see colors as they naturally occur. All of our Polaroid lenses are made of optical grade plastic polarized lenses with a 7 layer back side anti reflective coating to reduce back side glare. All Polaroid sunglasses block 100% of harmful ultraviolet light. The Brown Lens… |