1.56 Photochromic Dark Grey HMC optical lens

Short Description:

New Grneration, Fast Color Change

Indoor Clear, outside adjust the color according light.

100% blockage of harmful UV rays.

Optical devices that has the property to darken itself in the presence of ultraviolet rays.

It provides solar protection in exteriors, returing to have a lower level of absor ption in interiors.

Can be used equally well throughout the year. in all climates and for many different activities.

Product Detail

Product Tags

Quick Details

Place of Origin:CN;JIA Brand Name:Hongchen
Model Number:1.56 Lenses Material:Resin
Vision Effect:Single Vision Coating:HMC
Lenses Color:Clear Diameter:65/70mm
Index:1.56 Material:NK-55
photochromic:grey Color:Green/Blue
Product Name:1.56 photochromic dark grey hmc optical lens RX Lens:available
Specific Gravity:1.28 ABrasion Resistance:6-8H
Abbe Value:38  

1) The meaning of the photochromic lens

Photochromic lenses change color in the sunlight. Typically, they  are clear indoors and at night,change to grey or brown when  exposed to direct sunlight. 


Photochromic lenses, are the lenses that darken in the sunlight and lighten in softer light or the dark. These lenses have been around for a decade or more, and they offer the convenience of sunglasses without having to wear them over your prescription glasses or having to constantly switch between the two. 


Here are some of the biggest pros to getting a pair of transitional lenses: 

-Protects your eyes – Transitional lenses do more than function as sunglasses. They actually filter out a good deal of the harmful UV rays emitted from the sun, leading to healthier and happier eyes。

   -Different styles – Transitional lenses come in a myriad of styles, shades, and tints suitable for anyone’s tastes, so it won’t limit your fashion sense: It will encourage it.

   -Cost effective – Photochromic or transitional lenses can actually be quite cost effective. With transitional lenses, you end up not having to buy two pairs of glasses: prescription sunglasses and normal glasses. You get the best of both, rolled into one simple solution.

   -Convenient – Transitional lenses are very convenient because they save you from having to carry around two pairs of glasses and having to switch between them to meet different needs. With transitional lenses, you can wear sunglasses while driving and still be able to read important street signs.



Here are the advantages of HONGCHEN photochromic lenses:

1.We have full color of photochromic lens: Grey/Brown/Pink/Blue/Purple/Dark Grey.
2.Our lens is Material photochromic, more stable than spin photo. Can use for more than 2 years, can stock for long time, the cost is lower.
3.Keep same color for every shipment.
4.Excellent color consistency before and after change.
5.Fast speed of changing in 5 seconds. When the UV rays higher, color change faster and darker.


Packaging & Delivery

Delivery & Packing

Envelops(For choice):

1) standard white envelops

2) Our brand "Hongchen" envelops

3) OEM envelops with customer's Logo

Cartons: standard cartons:50CM*45CM*33CM(Every carton can include aroud 500 pairs ~600 pairs finished lens, 220pairs semi-finished lens.  22KG/CARTON,0.074CBM)

Nearest shipping Port  : Shanghai port

Delivery Time :


1 - 1000



Est. Time(days)

1~7 days


20~40 days

If you have any special requirements, can contact with our sales people, we can do all series service similar as our Domestic brand.



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Video Description


Monomer Import from Korea
Diameter 65/70mm
Abbe value 38
Specific Gravity 1.28
Transmission 98-99%
Coting colour choice Green/Blue
Produce quantity 40,000 pieces per day
Samples Samples are free charge, and at most 3 pairs. In addition, our customers need to assume the shipping cost
Payment 30% advence by T/T, the balance before shipment

Product Feature

Photochromic lenses are available in nearly all lens materials and designs, including high indexes , bifocal and progressive. An added benefit of photochromic lenses is that they shield your eyes from 100 percent of the sun's harmful UVA and UVB rays.

Because a person's lifetime exposure to sunlight and UV radiation has been associated with cataracts later in life, it's a good idea to consider photochromic lenses for children's eyewear as well as for eyeglasses for adults.

Modern photochromic lenses tend to be plastic and instead of silver chemicals they contain  organic (carbon-based) molecules called naphthopyrans that react to light in a slightly  different way: they subtly change their molecular structure when ultraviolet light strikes them. 


Coating Choice

Hard Coating/

Anti-scratch Coating

Anti-reflective Coating/

Hard Multi Coated

Crazil Coating/

Super Hydrophobic Coating

 Avoid ruining your lenses quickly protect them from getting scratched easily Reduce glare by eliminating the reflection from the surface of the lens not to be confused with palarized Make the surface of the lenses super   hydrophobic, smudge resistance,  anti static, anti scratch, reflection and   oil

Productive Process

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Production Flow Chart


Company Profile


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