High Index 1.71 Photochromic Grey Hmc Lens Photogrey Eyeglasses Optical Lenses

• Customization: Available
• Usage: Lighting, Medical, Optical
• Type: Convex Lens
• Transmittance: >95%
• Shape: Ball, Hemisphere
• Material: Kr
• Lenses Color: Clear
• Certification: ISO9001, CE, FDA
• Customized: Customized
• Coating: HMC
• Power Range: Sph 0.00~-15.00,0.00~+6.00,Cyl 0.00~-4.00
• Coating Color: Green,Blue
• Specific Gravity: 1.38
• Abbe Value: 37
• Transport Package: White Envelopes or as Customers" Requirement
• Specification: 75/70/65mm
• Trademark: BORIS
• Origin: Danyang, Jiangsu, China
• HS Code: 900150
• Production Capacity: 20000PCS/Day

Product Description

Spin coating Lens :  Spin coating Lens adopts spin change technology, which completely subverts the previous basic change technology. Compared with base transformation, it is uniform and has no background color; Compared with the traditional film changing method, it is superior to the soaking method. The color changing liquid and the hardening liquid are placed in different processes, which not only ensures the adhesion of the color changing liquid, fully maintains its color changing tension, but also exerts the hardening fixation effect and strengthens the hardness. With double-layer spin coating technology and hardening protection, the process quality is greatly improved.
Advantages: rapid and uniform color change. It is not limited by the material, and any ordinary aspheric surface, 1.56, 1.61, 1.67, 1.74, etc. can be processed into a film-changing lens. There are more varieties, and consumers have more choices.

1.71 lens Full name 1.71 refractive index lens, with high refractive index, high transmittance, high Abbe number characteristics, in the case of the same myopia degree, can significantly reduce the thickness of the lens, reduce the quality of the lens, at the same time, make the lens more pure and bright, not easy to disperse rainbow grain. It is found that adding cyclic sulfide resin into the lens material can improve the refractive index of the lens, but too much cyclic sulfide resin will lead to the reduction of light transmittance and material cracking. By precisely controlling the content of ring sulphur resin in 1.71KR resin, the 1.71 lens achieves high refractive index and abbe number while ensuring good light transmittance, low dispersion and clearer vision.


BORIS OPTICAL is one of the most Potential Finished and Semi-Finished Optical Lenses factory located in Danyang City, China. It was establish in 2012 with covering 20000 spm and 150 employees. The annual production and sales of lenses are 30 million pieces, and the annual sales have exceeded 100 million for five consecutive years.
Our Key & Advantage Products:
Single Vision Lens:1.49;1.56;1.59;1.60;1.67;1.74
Bifocal Lens: 1.49; 1.56
Progressive Lens: CR-39; 1.56; 1.60
Functional Lens: Blue Cut, Photochromic; Photochromic +UV420 Blue cut; Sunglasses; Polarized; Polycarbonate
RX Service: Free Form; Special Coating; Special Power Range
FAQ

1. Could you provide samples?

Of course, free samples can be sent to you, but please help us pay the freight fee.

2. What Certification do you have for your optical lens?

FDA, CE, ISO9001 certification is available.

3. What is the MOQ of optical lens?

We dont have Min Order quantity requirement. But if the quantity order is too small, we have to charge extra delivery fee.

4. Could you provide OEM service?

Sure, just send us your requirements.