Nk-55 1.56 Photochromic Grey Fast Change Dark Grey Bifocal Invisible Blended Hc Optical Ophthalmic Lens

• Customization: Available
• Function: for Presbyopic, for Astigmia, UV Protection, for Myopia, Photochromic
• Age Group: Adults
• Model NO.: BS309
• Suitable for Face: All Face
• Material: Resin
• Type: Photochromic Lens
• Coating: HC
• Lenses Color: Grey
• Index: 1.56
• Abbe Value: 38
• Specific Gravity: 1.28
• Coating Color: White
• Transport Package: White Envelope or Color Envelope
• Specification: Resin
• Trademark: BORIS
• Origin: China
• HS Code: 90015099
• Production Capacity: 20000PCS/Day

Product Description

Color changing lens, also known as "photosensitive lens". The glass lens is added with silver halide, but at present the mainstream is resin discoloration lens, in the acrylic resin lens with the addition of Pyrex ring and other chemicals, so that the original transparent and colorless lens, in the event of strong light irradiation, will become colored lens, to do protection, so it is suitable for indoor and outdoor use at the same time.
Color changing lens is made of optical glass containing silver halide microcrystal. According to the principle of reversible reaction of light color tautometry, it can quickly darken under sunlight and ultraviolet radiation, completely absorb ultraviolet light, and show neutral absorption to visible light. Back to the dark, can quickly restore colorless transparent.
Color-changing lenses are mainly used in the open air, snow field, indoor strong light workplace, to prevent the damage of sunlight, ultraviolet light, glare on the eyes.



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.