SETO 1.56 Semi-Finished Photochromic Lens

Short Description:

The molecules responsible for causing photochromic lenses to darken are activated by the sun’s ultraviolet radiation. Because UV rays penetrate clouds, photochromic lenses will darken on overcast days as well as sunny days.Photochromic lenses typically will not darken inside a vehicle because the windshield glass blocks most UV rays. Recent advancements in technology allow some photochromic lenses to activate with both UV and visible light, providing some darkening behind the windshield.

Semi-finished lens is the raw blank used to produce the most individualized RX lens according to thepatient’s prescription. Different prescription powers request for different semi-finished lens types or base curves.

Tags: 1.56 resin lens,1.56 semi-finished lens,1.56 photochromic lens


Product Detail

Product Tags

Specification

7 SETO 1.56 Semi-Finished  Photochromic Single Vision Lens
SETO 1.56 Semi-Finished  Photochromic Single Vision Lens_proc
6 SETO 1.56 Semi-Finished  Photochromic Single Vision Lens
1.56 photochromic semi-finished optical lens
Model: 1.56 optical lens
Place of Origin: Jiangsu, China
Brand: SETO
Lenses Material: Resin
Bending 50B/200B/400B/600B/800B
Function photochromic & semi-finished
Lenses Color Clear
Refractive Index: 1.56
Diameter: 75/70/65
Abbe Value: 39
Specific Gravity: 1.17
Transmittance: >97%
Coating Choice: UC/HC/HMC
Coating color Green

Product Features

The knowledge of Photochromic lens

1. The definition of photochromic lens
①Photochromic lenses, often called transitions or reactolights, darken to a sunglasses tint when exposed to sunlight, or U/V ultraviolet, and return to a clear state when indoors, away from U/V light.
②Photochromic lenses are made of many lens materials including plastic, glass or polycarbonate. They are typically used as sunglasses that conveniently switch from a clear lens indoors, to a sunglasses depth tint when outdoors, and vice versa.
③Brown / Photo Grey Photochromic Lens For Outdoor Activities 1.56 Hard Multi Coated
2. Outstanding Color Performance
① Fast speed of changing, from white to dark and vice versa.
②Perfectly clear indoors and at night, adapting spontaneously to varying light conditions.
③Very deep color after change, the deepest color can be up to 75~85%.
④Excellent color consistency before and after change.
3. UV Protection
Perfect blockage of harmful solar rays and 100% UVA & UVB.
4. Durability of Color Change
①Photochromic molecules are equally bedded in lens material, and are activated year by year, which ensure durable and consistent color change.
②You might think all of this would take quite a bit of time, but photochromic lenses respond remarkably quickly. About half the darkening happens within the first minute and they're cutting out about 80% of sunlight within 15 minutes.
③Imagine lots of molecules suddenly darkening inside a clear lens. It's a bit like closing the blinds in front of your window on a sunny day: as the slats turn, they progressively block out more and more light.

photochromic lens

5.What is the difference between HC, HMC and SHC?

       Hard coating     AR coating/Hard multi coating        Super hydrophobic coating
makes the uncoated lens hard and increases the abrasion resistance increases the transmittance of the lens and reduces surface reflections makes the lens waterproof, antistatic, anti slip and oil resistance
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Certification

c3
c2
c1

Our Factory

1

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