Jiangsu Aogang Optical Glasses Co., Ltd.
Bring the clear world back to you
Add to Cart
Withour Coated 1.56 Flat-top Uncoated Photochromic Prescription Eyeglass Lenses For Far And Near Vision
I. Specifications:
| Transmission | Diameter | Refractive index | Abbe value | Specific Gravity |
| 98% | 70mm | 1.56 | 38 | 1.21 |
| Coating | Photochromic | Power range | Place of origin | Brand |
| UC | Grey/Brown | SPH:000~+300,000~-300,CYL:+100~+350 | China | Aogang |
II. Features
1) What is the 1.56 Photochromic Flat-top lens.
| Photochromic: Photochromic lenses are eyeglass lenses that are clear (or nearly clear) indoors and darken automatically when exposed to sunlight. Other terms sometimes used for photochromic lenses include "light-adaptive lenses" and "variable tint lenses."
Flat-top: Flat-top lenses were used to correct two different eye prescriptions. Bifocals were easy to spot - they had a line dividing the lens in two, with the upper half for distance vision, and the lower half for reading. |  |
2) How the photochromic work?
The molecules responsible for causing photochromic lenses to darken are activated by the sun's ultraviolet radiation. Because UV rays penetrate clouds, photochromic lenses will darken on overcast days as well as sunny days.
Photochromic lenses typically will not darken inside a vehicle because the windshield glass blocks most UV rays. Recent advancements in technology allow some photochromic lenses to activate with both UV and visible light, providing some darkening behind the windshield.
3) Why choose the Flat-top?
Bifocals have two different lens powers that aid in seeing objects at various distances once the aging process reduces your ability to do so. These are usually prescribed to adults older than 40 years, although some children and younger adults may also need them for focusing problems, which strain the eyes while reading.
III. Power range
IV. Production process.
| |
|
|
|
V. Packing&Shipping
| Envelops | 1) standard white envelop |
| 2) color envelop with customer design | |
| Outer box | standard export paper carton 38cm*48cm*35cm ( 0.064 CBMS ) |
| Include around 500 pairs of finished lenses, 21kgs | |
| Include around 100 pairs of semi finished lenses, 15kgs |
| Shipping | Samples | By Fedex, DHL, UPS, TNT etc. |
| Delivery time: within 3 days | ||
| Batch goods | By air, sea, express | |
| Delivery time: 10-30 days, depend on your quantity | ||
| Carrier | We can choose for you or offer us your cooperative company | |
| Payment terms | 30% T/T in advance, the balance before shippment | |
VI. Why choose us:
1. We are equipped with world advanced machines and facilities; cooperating with some international branded monomer company ; using European quality and management system. All of these guarantee the stable good lens quality.
2. 20 years’ experience in manufacturing and export of optical lenses, which makes us own more than 300 customers spread over 60 countries.
3. Lens items are quite complete including SV, BIFOCAL, PROGRESSIVE, PHOTOCHROMIC, BLUECUT, SUNLENS, POLARISED LENS, FINISHED & SF etc. You can get full range of optical lens from Aogang.
4. Expert new products research department makes us differ from others and new products can be suggested to our customers in due time.
5. Every year, we will exhibit at some optical exhibitions. You can find suitable time and place to talk with us face to face.