Most Commonly Used Lenses For Prescription Safety Glasses

By Author: Rijith
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Polycarbonate Lens

Polycarbonate first evolved in the Seventies for aerospace programs and continues to be in use for helmet glass of astronauts and area go back and forth windshields. Now you may believe how robust the polycarbonate lens is! Later, in 1980 while there was a call for light-weight and effect-resistant eyeglasses, polycarbonate lenses were first used in making eyewear.

Since then, the rage for polycarbonate lenses has not slowed down. It is one of the maximum desired glasses for making safety eyeglasses, kid's eyewear and sports goggles.

Polycarbonate is one the number one desire for making Prescription Safety Glasses and Prescription Lens. They are thinner and lighter to put on day long. Additionally, the lenses offer 100% UV safety and are ten instances greater effect – resistant in comparison to different lenses.

Other traditional plastics are made using a forged moulding process, wherein a plastic cloth is baked for a protracted period in the shape of lens, to solidify the liquid plastic to construct a lens. Whereas, polycarbonate is made using a thermoplastic process, wherein ...
... small plastic pellets are heated till they melt. Then the molten polycarbonate is injected in the lens mould, it's far then compressed below excessive strain after which it is cooled to shape the form of lens, that is a very last process.

The polycarbonate lens conforms to OSHA protection and high-satisfactory standards. So, we quite advise this lens for safety glasses for the usage at some point of paintings and different sports activities.

Features

Thickness - Polycarbonate has an excessive index of refraction -1. fifty-eight that makes it pretty thinner than different lenses.
Scratch Resistant- Polycarbonate lenses have an integrated scratch-resistance coating, which makes it an awesome choice for hard uses.
Weight- Polycarbonate lenses are mild in weight.
Optical clarity - Polycarbonate lenses offer a clean vision to the wearer while inflicting discomfort.
Impact Resistant – Polycarbonate lenses are highly effect-resistant; they could live on the effect of metal balls traveling at a hundred and sixty kilometers according to hour without breaking.
UV Protection- Safety glasses product of polycarbonate lenses blocks 100% UV rays, imparting protection to eyes in opposition to dangerous rays, which cause eye issues like melanoma, pores and skin most cancers in and around eyelids and cataracts.
Trivex Lens

Trivex lenses got here in 2001 for navy use, as an "obvious armour". Clearer, effective and lighter, Trivex became followed for eyewear use in 2002. It rapidly changed the alternative substances used for prescription safety glasses. Like polycarbonate lenses, lenses which might be a product of Trivex are thin, mild in weight and present better effect-resistance than plastic or glass lenses.

Trivex lenses encompass a urethane-primarily based totally monomer, and are made the usage of a forged moulding process, in a comparable manner to how everyday plastic is created. This lets in the glasses to have sharp optics than inject moulded polycarbonate lenses.

Features

Thickness- Trivex lenses have a refractive index of 1. fifty-three which makes it thinner and effect resistant
Weight- Trivex’s low unique gravity function makes it lighter
Optical clarity- Trivex lens have much less inner strain that allows a pointy and crisp vision
Impact Resistant- Trivex lenses have an excessive tensile energy that makes it quite long lasting and mild in weight. This is an important function as this lens is installed on minimalists- rimless frames in addition to on safety eyewear.
UV Protection- The lens presents 100% safety to eyes from dangerous UV rays
Availability- Trivex lens is broadly utilized every day in addition to Prescription Safety Glasses due to the fact they're mild in weight and may be installed on glossy and stylish frames.
Cost- The fee of the Trivex lens is barely better than the polycarbonate lens.
Plastic Lens

While maximum eye care practitioners decide on Trivex lenses for rimless glasses and safety eyewear, maximum clients search for higher opportunity price-wise. A plastic lens is an excellent less expensive opportunity for Trivex. It is long lasting and clean and much less high-priced than different lenses used for safety eyewear.

Features

Weight-CR39 plastic is mild in weight
Optical Clarity- It presents desirable vision even for better prescriptions
Suitability- It is good for the paintings surroundings wherein chemical and portray is involved
Scratch-resistant- Plastic lenses are covered with starch-resistant paint
Thickness- The center of the lens is thicker, which gives tensile energy to the general glass.
Anti-Reflective – The plastic lenses are covered with anti-reflective coating which makes it extraordinarily anti –reflective.