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Scratch Resistant Lenses

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by

Kat Scott

on 12 March 2015

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Transcript of Scratch Resistant Lenses

Let's find out...
Scratch Resistant Lenses
- Part of the Ray-Ban Survivors Collection, NASA provided their knowledge and were able to create 10 times the scratch resistance of any other ordinary lenses.
Ray-Ban and NASA?
- Ray-Ban uses diamond-like carbon which provides scratch resistance
- Also reduces surface friction that allows water to slide off the lenses and stop spotting.
To conclude, I believe that NASA was very helpful in giving some of their research to Ray-Ban and be able to offer the sunglasses and prescription glasses to the public. Lots of people require glasses to see, so it's great that they decided to do this and allow people to feel safer if they drop their glasses for example.
Dr. Ted Wydeven of the Ames Research Center in NASA, generated the technology for the first scratch-resistant plastic lenses while working on a spacecraft water purification system. To alter a membrane in the purification process, Dr. Wydeven coated a filter with a thin plastic film using an electric discharge of an organic vapor. The research continued as NASA developed an abrasion-resistant coating for the astronaut space helmet visors and other plastic surfaces of aerospace equipment. Foster-Grant invested over 10 years of research trying to find a coating for lenses that could give glass-like scratch-resistance while keeping all the benefits of plastic.
Sources
- http://spinoff.nasa.gov/spinoff1996/43.html
- http://www.spacefoundation.org/programs/space-technology-hall-fame/inducted-technologies/scratch-resistant-lenses

Photos
- http://s458.photobucket.com/user/WayBeyondSoccerMom/media/NasaDiThatScratchResistantLenses.jpg.html
- http://archive.seds.org/technology/images/sunglasses2.jpg

Did you know?
In 1972 when the Food and Drug Administration issued a regulation that all sunglasses and prescription lenses must be shatter-resistant. The main disadvantage to glass is its brittleness, so eyeglass manufacturers turned to plastics. Plastic lenses had many advantages (lower manufacturing costs, excellent optics, far better absorption of ultraviolet radiation, lightweight), but although they were resistant to shattering, they were a high risk to scratching.
- These sunglasses go for around $137.00 so it's a bit pricey but I believe that if you want strong glasses, these are the best.
- Ray-Bans is one of the only companies to produce this strong result of scratch resistant lenses thanks to NASA.
Facts
How they're made
Full transcript