Basic Info.
Product Description
The main feature of photochromic lenses is that they can darken and lighten in response to different light conditions. When exposed to ultraviolet light, usually from natural sunlight, a chemical reaction darkens the lenses. This lens takes less than a minute and allows the wearer to see clearly in both bright outdoor and dim indoor conditions without constantly having to switch between sunglasses and eyeglasses. Photochromic lenses can also block out 100% of the sun's harmful UVA and UVB rays. 
Lens: A piece of glass or other transparent material with one or more curved surfaces through which objects appear clear, larger, or smaller. Usually used in glasses, cameras, telescopes, etc
Classification: Lenses can be divided into the following five types according to different materials:
Resin lens special lens space lens glass lens PVC lens
The index of refraction refers to the refractive index of the lens, and the higher the index, the thinner the lens. Refractive index generally: 1.49, 1.56, 1.61, 1.67, 1.74.
BORIS OPTICAL is one of the most Potential Finished and Semi-Finished Optical Lenses factory located in Danyang City, China. It was establish in 2012 with covering 20000 spm and 150 employees. The annual production and sales of lenses are 30 million pieces, and the annual sales have exceeded 100 million for five consecutive years.
Our Key & Advantage Products:
Single Vision Lens:1.49;1.56;1.59;1.60;1.67;1.74
Bifocal Lens: 1.49; 1.56
Progressive Lens: CR-39; 1.56; 1.60
Functional Lens: Blue Cut, Photochromic; Photochromic +UV420 Blue cut; Sunglasses; Polarized; Polycarbonate
RX Service: Free Form; Special Coating; Special Power Range
| 1. Could you provide samples? |
| Of course, free samples can be sent to you, but please help us pay the freight fee. |
| 2. What Certification do you have for your optical lens? |
| FDA, CE, ISO9001 certification is available. |
| 3. What is the MOQ of optical lens? |
| We dont have Min Order quantity requirement. But if the quantity order is too small, we have to charge extra delivery fee. |
| 4. Could you provide OEM service? |
| Sure, just send us your requirements. |