1.56 blue block flat top bifocal hmc optical lens
|Place of Origin: CN;JIA||Brand Name:Hongchen|
|Model Number: 1.56||Lenses Material:Resin|
|Vision Effect: Bifocal||Coating:HMC|
|Lenses Color: Clear||Index:1.56|
|RX lens:available||Normal Power:+3.00~-3.00 ADD:+1.00~+3.00|
|MOQ:200 PAIR||Product Name:1.56 blue block bifocal hmc optical lens|
|Specific Gravity:1.28||ABBE Value:38|
With a segment in the lower area of the lens, a bifocal lens displays two different dioptric powers, which provides presbyopes with clear vision for both near and distance visions.
Flat Top optical lens
A flat top bifocal lens is offers correction for both near and far distances. It is a multifocal lens commonly prescribed for those suffering from both presbyopia and hypermetropia, a condition whereby, with age, the eye exhibits a progressively diminished ability to focus on near and far objects. The 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.
The advantage of the FT bifocal lens
Flat top Finished.
2) This is a D segment bifocal lens. It has the benefit that the optical centre of the near vision part of the lens i.e. the part of the reading area which gives the very best vision, is situated at the top of the reading portion.
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||SPH:-3.00~+3.00 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|
What Is Blue Light?
For the purposes of this article, we’ll focus on blue light, one of the many hues in all visible light.
Blue light is naturally produced by the sun but also by computer monitors, smartphone screens and other digital devices. In addition to these, blue light is produced by LED and fluorescent lights, and compact fluorescent light bulbs. Blue light is essential in maintaining your sleep and wake cycle, mood and keeping your memory sharp.
Harmful Effects Of The Blue Light
Believe it or not, but today, almost everyone is a victim of Computer Vision Syndrome (CVS), a condition which results from focusing the eyes on a computer or any gadget for prolonged hours. Continuous working on digital screens means focusing and refocusing your eyes back and forth. This leads to eyestrain, dry and sticky eyes.
The Benefits of Blue Cut Lenses
Blue Cut Lenses is to block and protect your eyes from high energy blue light exposure. Blue cut lens effectively blocks 100% UV and 40% of the blue light, reduces the incidence of retinopathy and provides improved visual performance and eye protection, allowing wearers to enjoy the added benefit of clearer and sharper vision, without altering or distorting color perception.
What Blue Block Lenses by Hongchen Actually Do
1) Anti-glare blue cut lenses protect your eyes from the harmful effects of blue light caused by prolonged working hours on a computer, laptop or mobile.
2) Lower risk of certain types of cancer.
3) Lower risk of Diabetes, Heart Disease & Obesity.
4) Make you feel engertic when you finish the long time working before the computer.
5)Make your eyes turn tried slowly.
Why We Need The Blue Cut Lens?
The most common effects of too much blue light exposure are eye strain, blurred vision, and headaches. However, recent studies have focused on blue light’s negative impact on the circadian rhythm and found that watching TV or using a tablet before bedtime, for example, can result in restlessness and disrupted sleep cycles. In extreme cases, too much blue light exposure can even lead to permanent eye damage and vision loss.
Children are especially vulnerable because their eyes have not yet developed natural defenses against UV and HEV blue light. Today, a staggering 97 percent of American kids under the age of four use mobile devices, and teens are spending an average of 6.5 hours per day on screens. Now that kids are using more digital devices at home and school starting at a young age, it’s important to protect their eyes as much as possible.
make the uncoated lenses are easily subjicted andexposed to scratches
AR coating/Hard multi coating:
protect the lens effectively from reflection, enhance functional and charity of your vision
Super hydrophobic coating:
make the lens waterproof, antistatic, anti slip and oil resistance