1.49 SF FLAT TOP UC Optical Lens
|Place of Origin:Jiangsu, China||Brand Name:Hongchen|
|Model Number:1.49||Lenses Material:Resin|
|Lenses Color:Clear||Coating Color:clear|
|Index:1.49||Product Name:1.49 semi-finished flat top bifocal uc optical lens|
|MOQ:1 Pair||Function:Protect Eyes|
|Specific Gravity:1.32||ABBE Value:58|
|Delivery Time:Within 20 Days|
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.
The advantage of the FT bifocal lens
1) This is a very convenient type of lens that allows thewearer to focus on objects both at close range and far range through a single lens.
2)This type of lens is designed to enable viewing of objects in the distance, at close range and in the intermediate distance with corresponding changes in power for each distance.
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
Packaging & Delivery
Delivery & Packing
1) standard white envelops
2) Our brand "Hongchen" envelops
3) OEM envelops with customer's Logo
Cartons: standard cartons:50CM*45CM*33CM(Every carton can include aroud 500 pairs ~600 pairs finished lens, 220pairs semi-finished lens. 22KG/CARTON,0.074CBM)
Nearest shipping Port : Shanghai port
Delivery Time :
1 - 1000
If you have any special requirements, can contact with our sales people, we can do all series service similar as our Domestic brand.
|VISION EFFECT||Flat top bifocal|
|It provides solar protection in exteriors,returning to have a lower level of absorption in interiors|
|Can be used equally well throughout the year,in all climates and for many different activities|
|Supply ability||5000 pairs per day|
|Power Range||Base:2/4/6/8 ADD:+1.00~+3.00|
|It protects your eyes from each kind of eye disease by completely screening the UV ray 1 year quality guarantee|