Seesen Optical Lens Lenses Blue Simi-Finished 1.56 UV420 Blue Cut Single Vision Hmc Cheap Lens

• Function: for Presbyopic, for Astigmia, UV Protection, for Myopia
• Material: Nk55, Imported From Japan
• Coating: Hc,Hmc,Shmc,Green,Blue
• Abbe Value: 40
• Specific Gravity: 1.28
• Power Range: Sph:-20.00~+11.00 Cyl:0:00~-6.00
• Model NO.: Simi-Finished 1.56 UV420 Blue Cut HMC
• Diameter: 70/75mm
• Guarantee: 3~5 Years
• Keywords: Sf 1.56 Blue Light Blocking Lens

Product Description

SEMI-FINISHED 1.56 BLUE CUT HMC

MATERIAL REFRACTIVE INDEX = 1.56                       TOOLING INDEX = 1.530
Nominal curve	T.C	Sag	Rad	Back Curve	Diameter	C.T	E/T	RX Range Recommended
0.5	0.56	0.202	990.2	5.25	75	8	13.5	(-400~-2000)/-600
2	2.12	0.76	263.567	5.25	75	7.5	11.5	(-200~-325)/-600
3	3.21	1.15	174.488	5.25	75	7	9.5	(-000~-200)/-600
4	4.26	1.53	131.483	5.25	75	8	9.4	(+000~+300)/-600
5	5.27	1.9	106.213	5.25	75	8.5	8.5	(+300~+400)/-600
6	6.38	2.31	87.135	3.5	75	10.25	6.5	(+400~+500)/-600
8	8.76	3.21	63.91	3.5	75	13.5	7.5	(+500~+800)/-600
10	11.5	4.35	48.152	3.25	75	20	9	(+900~+1150)/-600

Details:

Harmful Effects of High Energy Blue Light
 

1. Disrupts the Circadian Rhythm

2. Higher risk of certain types of cancer

3. Higher risk of Diabetes, Heart Disease & Obesity

4. Aggravates Depression

5. May induce Myopia

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. 


Coating Choices:

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.