Active Member
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[China]
Address: East of Nongangxiao, Situ Town, Danyang City, Jiangsu Province, China
Contact name:Richard Mao
Jiangsu Aogang Optical Glasses Co., Ltd. |
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Contact Way
Peggy Lu: +8615052975513 (WhatsApp)
Mid Index 1.56 Hard Multi Coated Flat Top Semi Finished Lens Blanks For Anti Blue Light
I. Technical Data
| 1.56 Semi Finished Flat Top Bifocal Lens | |
Material: 1.56 Index NK55 Resin(Ne=1.549, Abbe=38, Specific Gravity=1.28) Segment Placement: 5mm down -5mm in Add Power: +1.00 to +3.50 in 0.25D steps Segment Size: 28mm | |
| CONVEX SURFACE | CONCAVE SURFACE | ||||||||
| Mominal Curve | True Curve | Sag(sagitta: 40mm) | Sag(sagitta: 50mm) | Radius | Radius | CT(mm) | ET(mm) | Dia(mm) | |
| 1.549 | 1.530 | ||||||||
| 4.25 | 4.18 | 4.04 | 1.51 | 2.37 | 131.29 | 132.50 | 8.7 | 11.7 | 70 |
| 6.25 | 6.25 | 6.03 | 2.27 | 3.57 | 87.87 | 88.80 | 11.3 | 8.8 | |
II. Specification
| Index | Diameter | Flat top segment |
| 1.56 | 70 MM | 28 |
| Abbe Value | Specific Gravity | Transmission |
| 58 | 1.32 | > 97% |
| Guarantee | Power Range | |
| 5-year | ADD: +100～+300 | |
III. Features
1. Flat Top Bifocal Lens
 | Bifocal glasses are used for many reasons, but the most common reason is Presbyopia. Presbyopia is a vision condition in which the crystalline lens within the eye looses its flexibility thus hampering the ability to focus. One may need a multifocal lens simply due to age. On an average, once you hit 40 you may became a good candidate for these lenses, although you may require multifocal lenses at a much earlier or later age and for other reasons as well. Always get your eyes checked for vision and eye health reasons.
A flat top 28 bifocal lens is offers correction for both near and far distances. IThe flat top lens includes a segment at the lower half of the lens with a prescription for reading (near distance). The width of the flat top 28 bifocal is 28mm wide at the top of the bifocal and looks like the Letter D turned 90 degrees. |
2. Blue Cut Lens
Blue light is a form of visible light with a wavelength in the range from 380nm to 500nm. It has a very short wavelength, and so produces a higher amount of energy. Studies suggest that over time exposure to the blue end of the light spectrum could cause serious long-term damage to eyes.
Nowadays, we spend more time using a wide variety of digital devices to work, learn and be entertained. Recent digital screens are often equipped with powerful light source such as LED. These digital screens emit intense blue light and can cause eye strain after long exposure.
Blue Cut Lenses have a special coating which reflects blue light and prevents it from passing through, allowing wearers to enjoy the added benefit of clearer and sharper vision, without altering or distorting color perception. |  |
IV. Coating Choice
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1. Hard Coated(HC): Making the uncoated lenses are easily subjicted andexposed to scratches
2. Hard Multi Coated(HMC/AR): Protecting the lens effectively from reflection, enhance functional and charity of your vision
3. Super hydrophobic Coating: Making the lenswaterproof, antistatic, anti slip and oil resistance
V. Packing & Shipping
| Envelop | |
| Choice 1 | Choice 2 |
| White envelop | color envelop with customer design weight: 157g size: 9*9*9cm |
| Outer box | |
| standard export paper carton 38cm*48cm*35cm(0.064 CBMS) | |
| Finished lens | Semi-finished lens |
| about 500 pairsper carton, 21kgs | about 100 pairs per carton, 15kgs |
| Lead time | |
| Depend on the quantity | |
| Carrier | |
| We can choose for you or offer us your cooperative company | |
| All the numbers provided above are estimated number,the actual numbers need to be measured according to the order you make | |
VI. Why Choose Us
1.We are a manufacturer with many years exporting experience. All lenses are exported to European countries, Japan, Korea, North and South America, Middle East, Southeast Asia and Africa market. We guarantee the quality to all buyers all over the world, and got a high reputation about quality from buyers in the past 8 years exporting time.
2. We will begin to track the product processing every day until you receive the goods and verify the product quality when you finish the payment. |  | You could contact us via Internet chat tools anytime, for example Skype, Whatsapp.
3. Our producing process is in vacuum dust-free shop, like prepare material, mixed material and take out .Four times quality checking during production process to contral lens quality.
4. We accept OEM &ODM orders. Actually most of our products are customized. We will try our best to fulfill your requirements about the material, the size and the printing. |
Peggy Lu: +8615052975513 (WhatsApp)
