Optical Lens Manufacturers in China Semi-Finished 1.56 Photogrey Round Top Lenses Photochromic Rt-28 Hmc Optical Lens

• Customization: Available
• Function: for Presbyopic, for Astigmia, UV Protection, for Myopia
• Material: Nk55, Imported From Japan
• Model NO.: Semi-Finished 1.56 Photochromic Round Top HMC
• Coating: Hc, Hmc, Shmc, Green, Blue
• Abbe Value: 42
• Specific Gravity: 1.15
• Power Range: Sph:000~ +300 000~-200 Add:+100~+300
• Diameter: 70mm
• Transmission: > 97%
• Guarantee: 3~5 Years
• Keywords: Sf 1.56 Photogrey Round Top Bifocal Hmc Lens
• Brand: Seesen

Product Description

SEMI-FINISHED 1.56 PHOTOCHROMIC ROUND TOP HMC LENS

MATERIAL REFRACTIVE INDEX = 1.552                     TOOLING INDEX = 1.530
Diameter	Nominal Curve	T.C	Rad	Back Curve	E.T	C.T	Sag	Seg Inset	ADD Range	RX Range Recommened
70/28mm	200	240	220.53	6	11	6	1.18	5	1.00-3.50	-2.00D/-5.00D
70/28mm	400	423	125.11	6	8	8	2.34	5	1.00-3.50	-1.00D/-3.00D
70/28mm	600	604	87.71	6	8	8	3.61	5	1.00-3.50	+2.00D/-2.00D
70/28mm	800	802	66.06	6	6	8	4.9	5	1.00-3.50	+2.00D/+5.00D

What is Photochromic Lens?

Indoor Protective Lens	Outdoor Protective Lens
In the room or at night, the lenses color are basically transparent, the same as the ordinary lenses, like high light transmission performance, relieve visual fatigue,make you see the world more clear.	Lens under the action of ultraviolet light in the sun color, ultraviolet dark color change, deep, shallow light-colored ultraviolet light, isolated from UV damage, anytime, anywhere to protect your eyes.

Round Top Lens
 

 

You focus through different prescriptions at different distances through the same lens - hence the name. Bifocals (meaning a lens with two points of focus - usually one for distance and one for near) are the most commonly prescribed multifocal lenses.

About the Coating:
About Custom Service:

About our Factory:

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.