Convox Semi Finished 1.56 SF Flat Top Blue Block HMC UV420 Optical Lenses
What Products can we Produce?
Index: 1.499, 1.56, 1.60, 1.60 MR-8, 1.67, 1.71, 1.74, 1.59 PC Polycarbonate
1. Single Vision Lenses
2. Bifocal/Progressive lenses
3. Photochromic Lenses
4. Blue Cut Lenses
5. Sunglasses/Polarized lenses
6. Rx lenses for single vision, bifocal, freeform progressive
AR treatment: Anti-fog, Anti-Glare, Anti-virus, IR, AR coating color.
Product Description
| Index | 1.56 | Lenses Material: | Resin |
| Vision Effect: | Flat Top Bifocal | Coating: | UC/HC/HMC/SHMC |
| Lenses Color: | Clear | Design: | Spheric |
| Coating Color: | Green/Blue | Lens Color: | Clear |
| Abrasion Resistance: | 6~8H | Transmittance: | 98~99% |
| ABBE: | 36.8 | UV Value: | 420 |
| BASE Curves: | 0~-10.00, ADD:+1.00~+3.00 | Diameter: | 70/28mm |
Semi-finished lens is the raw blank used to produce the most individualized RX lens according to thepatient's prescription. Different prescription powers request for different semi-finished lens types or base curves.
The semi-finished lenses are produced in a casting process. Here, liquid monomers are first poured into moulds. Various substances are added to the monomers, e.g. initiators and UV absorbers. The initiator triggers a chemical reaction that leads to hardening or "curing" of the lens, while the UV absorber increases the UV absorption of the lenses and prevents yellowing.
Regardless of the reason you need a prescription for near-vision correction, bifocals all work in the same way. A small portion in the lower part of the lens contains the power required to correct your near vision. The rest of the lens usually is for your distance vision. The lens segment devoted to near-vision correction can be one of several shapes:
• A half-moon — also called a flat-top, straight-top or D segment
• A round segment
• A narrow rectangular area, known as a ribbon segment
• The full bottom half of a bifocal lens called the Franklin, Executive or E style
Why Choose Convox Semi-finished Lenses?
--High qualified rate of power accuracy and stablity after RX production.
--High qualified rate of cosmetic quality after RX production.
--Precise and consistent parameters(Base curves, Radius, Sag, etc)
Product Feature
Where is Blue Light in life?
As laptops, tablets and smartphones have become more and more integrated into our daily lives, it makes sense to be aware of any potential negative effects they might have on our health. You’ve likely heard the term ‘blue light’ being bandied about, with suggestions it contributes to all kinds of nasties: from headaches and eye strain to straight-up insomnia.
Why we need blue block lens？
UV420 Blue Block Lens is a new generation of lens that takes a sophisticated approach to filtering the high-energy blue light emitted by artificial lighting and digital devices without distorting color vision.
The aim of UV420 Blue Block Lens is to improve visual performance and eye protection with an advanced anti-reflection technology, allowing you to enjoy the following benefits:
Detailed Images
What Blue Block Lenses by Convox Actually Do？
As people age, they may find that their eyes are not adjusting to distances as they used to. When people inch closer to forty, the lens of the eyes begin to lose flexibility. It becomes difficult to focus on close objects. This condition is called presbyopia. It can be managed to a large extent with the use of bifocals.
Bifocal (also can be called Multifocal) eyeglass lenses contain two or more lens powers to help you see objects at all distances after you lose the ability to naturally change the focus of your eyes due to age.
The lower half of a bifocal lens contains the near segment for reading and other close-up tasks. The rest of the lens is usually a distance correction, but sometimes has no correction at all in it, if you have good distance vision.
When people inch closer to forty, they may find that their eyes are not adjusting to distances as they used to, the lens of the eyes begin to lose flexibility. It becomes difficult to focus on close objects. This condition is called presbyopia. It can be managed to a large extent with the use of bifocals.
How bifocal lens work
Bifocal lenses are perfect for people suffering from presbyopia- a condition in which a person experiences blurred or distorted near vision while reading a book. To correct this problem of distant and near vision, bifocal lenses are used. They feature two distinct areas of vision correction, differentiated by a line across the lenses. The top area of the lens is used for seeing distant objects while the bottom part corrects the near-vision
1. One lens with two points of focus, don't need change glasses when looking far and near.
2. HC / HC Tintable / HMC / Photochromic / Blue Block/ Photochromic Blue Block all available.
3. Tintable to various fashionable colors.
4. Customized service, prescription power available.
Convox Coating
Single Vision Resin Lens
--Clear and Comfortable Vision, wide field of view.
--Using Korea Vacuum coating technology, the lens has the best optical performance of high light transmission and anti-reflection.
--Advanced technology makes the lens thinner, lighter and more beautiful to wear.
--Layer-by-layer test and inspection, the lens wear resistance and anti-fouling performance are super better.
Packaging & Delivery
Packaging Details
Semi Finish Lens Packing:
Envelops packing (For choice):
1)standard white envelops
2)OEM with customer's LOGO, have MOQ requirement
Cartons:
Standard cartons:50CM*45CM*33CM(Every carton can include around 210 pairs lens,21KG/CARTON)
Port Shanghai
Production Flow Chart
About Us
Certificate
Exhibition
Our Products Testing
Quality Checking Procedure
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