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Why are you seeing colors with polycarbonate lenses?
The index of refraction varies for different colors of light (i.e., for different wavelengths or frequencies), therefore, a source of white light, like rays from the Sun, can get separated into their components. White light isn't "pure" (monochromatic) light - it is really a mixture of many different colors.
Are objective lenses concave or convex?
Objective lenses are convex lenses.
What is the material used to make the helmet of an astronaut?
Highly strengthened polycarbonate.
Who invented the lenses?
who invented the bifocal lenses
What type of glass are headlights for cars made of?
most headlights are made out of a polycarbonate
Why do you have a clouding issue with your polycarbonate lenses?
why do i have a clouding issue with my polycarbonate lenses
How do you remove paint from polycarbonate lenses?
I spray painted my car and noticed over-spray on my polycarbonate eyeglass lenses the next morning. I tried soap and water but that removed none of the paint specks. I called my optometrist and they warned against using any solvent like paint remover or acetone on polycarbonate lenses. It would be OK on glass lenses, but i think polycarbonate is a plastic. So I tried 70% rubbing alcohol and some lens paper and with a little rubbing the paint specks came off. I quickly rinsed the lenses with water to remove the alcohol residue. The optometrist's office said it is not a good idea to let any substance besides water soak into the lenses as it may make them more brittle.
Do plastic glasses with polycarbonate lenses float?
Mine didn't.
What materials are optical lenses made from?
Plastic, glass, polycarbonate.
How are lenses made of polycarbonate different?
Lenses made from polycarbonate, the same type of plastic used for the space shuttle windshield, are about 50 times stronger than other lens materials.
Are wayfarer lenses made of glass?
just called rayban and they told me all original wayfarers have glass, not polycarbonate lenses.
Why are polycarbonate glasses good for children?
Polycarbonate glasses are the best choice for children who need glasses. They offer the strongest, safest and sturdiest material used for lenses. Polycarbonate was developed by aerospace engineers to be the plastic used in helmet visors.
What are eyeglass lenses made of?
According to Wikipedia, today's lenses are typically made from plastic, such as polycarbonate. Plastic is used in order to lessen the chance of breakage.
What is the difference between high index and polycarbonate lenses?
High-index lenses are an alternative choice to standard, plastic eyeglass lenses. Although high-index lenses are more expensive than plastic lenses, they can reduce the thickness and weight of an eyeglass lens, particularly for individuals with a strong prescription. High-index lenses are able to bend light to a stronger degree than a lens with a lower index, therefore the higher the index of the lens the less material needed to achieve a given prescription. High index lenses are categorized according to how strongly they bend light. The higher the index, 1.53 to 1.74 for high-index lenses, the better the lens is at bending light. High index lenses are 20 percent to 65 percent thinner than standard plastic lenses. In general, the stronger the prescription, the greater the difference in thickness between standard plastic and high-index plastic. A reduction in lens thickness and weight will occur in high-index lenses for prescriptions stronger than +2.00 or -2.50. Weaker prescriptions are not thinner than standard lenses when made with high-index materials. Polycarbonate lenses offer the same aesthetic benefits as high-index lenses, but polycarbonate lenses scratch easier, are difficult to coat or tint and are more likely to create distortions in colors and vision.
Are polycarbonate lenses the only good option for rimless eyeglasses?
Indeed, polycarbonate lenses are the best choice for the rimless eyeglasses. In 1980s it was introduced in the market and was then commercialized. Compare to other lenses it is much light in weight and resistant to different elements. It has become a standard for most eyeglass users, because polycarbonate lenses are great choice for rimless eye glasses and for safety glasses. This can also be used for sports and children eye function. This is indeed way better than the usual plastic eye lenses. Certainly, polycarbonate is perfect for rimless eyeglasses because it can give you the best protection to your eyes than any other kind of lenses can do. Because of its light weight size, you won't even feel that you are wearing eyeglasses.
Is it possible to change clear lenses to transitional lenses?
No. It is possible to have them tinted though. If you are going to do this, bear in mind that anti-reflective coated lenses will not tint as well as uncoated ones.
Is it safe to wrestle at wrestling school while wearing glasses?
It is better to wear contact lenses for sport but if you are unable to, or do not want to, wear contacts, make sure that you buy Polycarbonate lenses for your glasses. Polycarbonate is 12 times stronger than regular plastic and will not break or shatter if you take a fall.
