Middle Index 1.56 Adaptive Lenses With Scratch Protective Coating

Middle Index 1.56 Photo Grey/Brown Optical Lens With Scratch Protective Coating

I. Specifications:

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?

How Do Photochromic Lens 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.

• How Long Do Photochromic Lenses Take To Change Colour or React?

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.

The Advantages Of Photochromic Lens 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. 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

Jiangsu Aogang Optical Glasses Co., Ltd is one of leading professional opthalmic lenses manufacturers in China, it's a technical factory specializes in producing optical lenses since 1996, our plant covers an areas of 12,000 squares meters and our daily output raised to 40,000pieces. The company has been approved according to ISO9001 atandard, also our products have been registered with CE and FDA.

With 20 years of experience in vision field, our lenses enjoy high reputation in overseas markets, we improve the crafts continuously to control the quality. Science and technology has always been certified for the workship. Our lenses cover a wide variety, including single vision, bifocal lenses, photochromic lenses, progressive lenses, finished lenses, semi-finished lenses, normal power and rx power.

We have our own laboratory, our professional technique team include 25 engineers with their teams, providing customers with individualized service.