China Factory Index 1.499 Cr39 Resin Round Top Bifocal Optical Lens Uncoated Eyeglasses Lenses

• Customization: Available
• Function: for Presbyopic, for Astigmia, UV Protection, for Myopia
• Material: Cr39
• Model NO.: 1.499 Round top
• Abbe Value: 58
• Specific Gravity: 1.32
• Diameter: 70mm
• Power Range: Sph:0.00~+3.00 0.00~-1.00 Add:+1.00~+3.00
• Refractive Index: 1.499
• Round Top Segment: 28

Product Description

Product Name	1.499 Round-top28 Bifocal  Optical Lens Uncoated Eyeglasses Lens
Diameter	70mm
Monomer	CR39
Abbe value	58
Specific Gravity	1.32
Power Range	Sph:0.00~+3.00 0.00~-1.00 Add:+1.00~+3.00

Details:

Round top bifocals are further described by the width of the near segment, measured in millimeters (mm). The most popular RT bifocal is the RT-28, a round top bifocal with a near seg that is 28 mm wide.

Bifocal lens can be called a multi purpose lens. It has 2 different fields of vision in one visible lens. The larger of the lens usually has the prescription necessary for you to see for distance. However, this can also be your prescription for computer use or intermediate range, as you would normally be looking straight when you view through this particular part of the lens. The lower part, also called the window, typically has your reading prescription. Since you generally look down to read, this is the logical place to put this range of vision assistance.

Advantages of round-top bifocals

1. The wearers can see the near things by the round shape and see the distance things by the rest of the lenses.

2. The wearers don't need change two different visions glasses when they both reading book and watching TV.

About Our Company:
Jiangsu Seesen Optics is a professional optical lens manufactuer with 20 years of experience in China over 10 years of exporting experience, covering the areas 12000 square meters and having more than 300 employees.








A wide range of product catalog is one of our advantages, including index 1.499, 1.56, 1.60, 1.67, 1.71, 1.74, and bifocal, progressive,photochromic, semi-finished lens and so on, which can guarantee meeting different requirment of our customers.  



Packing&Delivery:

Choice 1
Envelope	Carton	Size
White Envelope	Stand Export Carton	38cm*48cm*35cm
Choice2
You design with your logo
Type	Lenses Pair	Weight
Finished lens	about 500 pairs	20KGS
Semi-finished lens	about 100pairs	15KGS
Lead time	Depend on the quality
Depend on the quantity	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.

FAQ:

1. Are your company a manufacturer or a trade company?
We are a manufacturer with many years exporting experience. Our factory is located in Jiangsu province.

2. Can your products be customized?
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, the printing.

3. How can I get sample from you?
Just send us your requirements, then we will send samples accordingly.

4. How many days will samples be finished? How about mass products?
Generally, we need 5-7 days to finish the sample production.As for the mass products, it depends on your order quantity.

5. How do you control lens quality?
Producing process is in vacuum dust-free shop, like prepare material, mixed material and take out .Four times quality checking during production process.