Jiangsu Aogang Optical Glasses Co., Ltd.
Bring the clear world back to you
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Middle Index 1.56 Photo Grey/Brown Optical Lens With Scratch Protective Coating
I. Specifications:
| Production | 1.56 Photochromic Lens |
| Monomer | NK55, imported from Japan |
| Diameter | 65/70mm |
| Abbe value | 42 |
| Specific Gravity | 1.16 |
| Transmission | >97% |
| Guarantee years | 3~5 years |
| Power range | SPH: 0.00~+-15.00 CYL: 0.00~-6.00 |
II. Transition lens:
Wearing eyeglasses can often be a pain. If it's raining, you're wiping water off the lenses; if it's humid, the lenses mist up; and if it's sunny, you don't know whether to wear your normal glasses or your shades and you may have to keeping switching between the two! Many people who wear eyeglasses have found a solution to the last of these problems by changing over to photochromic lenses. They look clear indoors or in poor light, but in sunlight they darken automatically and effectively turn your normal glasses into shades. It's pretty cool technology—but how exactly does it work?
Tiny molecules of silver halide and chloride are embedded within a photochromic lens which is invisible and clear until exposed to sunlight/UV rays. A chemical process takes place when exposed to sunlight/UV and the molecules effectively move, change shape and absorb the light. This process changes the molecules and they darken to a sunglasses shade/tint. |  |
Photochromic lenses, when exposed to sunlight/UV rays, will on average take approx 30 seconds to a minute to darken and will continue to darken for a further 10 minutes to full sunglasses tint/shade, returning to an almost clear state within 2 minutes and fully cleared within 5 minutes although excess temperature will affect this.
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UV protection - Photochromic lenses provide full protection against the harmful UV rays of the sun and direct exposure to sunlight can cause serious eye problems and in some cases blindness.
Convenience - You only need to own 1 pair of glasses for both indoors and outdoors in the sun as opposed to needing to switch between 2 pairs of regular glasses to sunglasses. You only need to remember to take one dual purpose pair of glasses with you as no doubt at some point we have all forgotten to take our sunglasses out with us only to be caught out by the glare of the sun or even left them behind never to be seen again. |
III. Technical Data:
IV. Our factory:
IV. Packing:
1. Envelope:
a) standard white envelope
b) color envelope with customer design (Weight: 157g, Size: 9*9*9cm)
2. Outer Box:
a) standard export paper carton (Size: 38*48*35cm, 0.064CBMS)
b) Include about 500 pairs of finished lens (Weight: about 21kg) or include about 100 pairs of 100 semi finished lens (Weight: about 15kg)
V. Shipping:
1. Samples:
a) Delivery time: 3-7 days (by Fedex, DHL, UPS, TNT etc.)
b) Sample is free, but accroding to our company rule, the shipping cost need to be assumed by customers.
2. Batch Goods:
a) Delivery time: 10-30 days (depend on your quantity, by air, sea or express)
b) Carrier: We can choose for you or offer us your cooperative company