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Grey / Brown Photochromic Progressive Lenses Blank 75mm Diameter 1.56 Index
Home » Products » Semi Finished Lens » SF Progressive Lens » Grey / Brown Photochromic Progressive Lenses Blank 75mm Diameter 1.56 Index
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Grey / Brown Photochromic Progressive Lenses Blank 75mm Diameter 1.56 Index

  • Semi Finished Photochromic Progressive
  • Aogang
  • 9001509900
  • 1.56
  • 75/12&14mm
  • NK55, imported from Japan
  • 38
  • 1.20
  • > 97%
  • HC, HMC
  • Base: 3/4/5/6 ADD: +1.00~+3.50
Quantity:

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Technical Data

1.56 Semi Finished Photochromic Progressive(12mm) Lens(Brown/Gray)

Material: 1.56 Index Resin(Ne=1.56, Abbe=38, Specific Gravity=1.20)

Add Power: +1.00 to +3.50 in 0.25D steps

Corridor Lenghth=12mm

Grey / Brown Photochromic Progressive Lenses Blank 75mm Diameter 1.56 Index

 

CONVEX SURFACE CONCAVE SURFACE


Mominal Curve Actual Curve

Sag

(sagitta: 40mm)

Sag

(sagitta:50mm)

Radius Radius CT(mm) ET(mm) Dia(mm)
1.549
3.00 1.45
0.53 0.82 378.571 83.00 7.9 13.8 75
4.00 3.52
1.28 2.00 155.882 83.00 8.6 11.8
5.00 5.90
2.14 3.37 92.982 83.00 9.3 8.5
6.00 8.03
2.92 4.62 68.387 83.00 10.4 6.9

 

Add Prism(Down):

 

ADD 1.00 1.25 1.50 1.75 2.00 2.25 2.50 2.75 3.00 3.25 3.50
Prism 0.35 0.44 0.53 0.61 0.70 0.79 0.88 0.96 1.05 1.14 1.23

 

Prescription Range:

 

Nominal Base Curve Recommended Diopter in Base Cylinder
3.00 -13.50 to -4.75 0~-6.00
4.00 -4.50 to +1.00 0~-6.00
5.00 +1.25 to +4.50 0~-6.00
6.00 +4.75 to +7.50 0~-6.00

 


Product Features

Today’s technologies make our lenses thinner, lighter, stronger, and better able to cope with the wear and tear of daily use, more so than anyone could have dreamt of just a generation ago.These technologies all address individual issues. Need protection from bright sunlight? Use a tint or a transition lens. As the grow older, your eyes can not see good things near or far? Use a progressive lens. If you have these two confuse, photochromic progressive lens is the best choice for you.

 

Grey / Brown Photochromic Progressive Lenses Blank 75mm Diameter 1.56 Index
  • Progressive lens

 

Progressive lens are also called No-Line Bifocals. They actually have three fields of vision – distance, computer, and reading. You can custom your Rx so you can use them for different distances, but that’s usually what people use them for. The progressive lens will progress from one “vision” to the next as you move your eye down through the lens, being that the top is distance and progresses to computer and then reading. 

 

This style of lens takes some time to get used to, and for sure will one day take over the entire market away from old school bifocals.

 

Grey / Brown Photochromic Progressive Lenses Blank 75mm Diameter 1.56 Index
  • Photochromic lens

 

Potochromic lenses are optical lens that darken on exposure to specific types of light of sufficient intensity, most commonly UV radiation. In the absence of activating light the lenses return to their clear state. Photochromic lenses may be made of glass, polycarbonate, or another plastic. They are principally used in eyeglassses that are dark in bright sunlight, but clear in low ambient light conditions. They darken significantly within about a minute of exposure to bright light, and take somewhat longer to clear. A range of clear and dark transmittances are available.

  • Why Go For Photochromic Progressive Lenses?

 

If you choose photochromic progressive lenses 

  1. They offer a younger looking appearance

  2. Provide 100% protection from the sun’s UVA and UVB rays

  3. They give you a comfortable and continuous field of vision with reduced distortion

  4. They eliminate the use of reading glasses because they have the power to correct all areas of vision

  5. Eliminate the problem of image jump

  6. Reduce the chances of eyestrain


Contact Us

contact us

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CONTACT

Add: East Of Nongganxiao, Situ Town, Danyang City, Jiangsu Province, China

Tel:+86-511-86550315
Phone No: +86 18796035231
Fax: +86-511-86555316
Email: admin@ag-optical.com.cn
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