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Hard Coating Semi Finished CR 39 Lenses , 1.56 NK55 Reading Glasses Lenses Blank
Home » Products » Semi Finished Lens » SF 1.56 Single Vision Lens » Hard Coating Semi Finished CR 39 Lenses , 1.56 NK55 Reading Glasses Lenses Blank
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Hard Coating Semi Finished CR 39 Lenses , 1.56 NK55 Reading Glasses Lenses Blank

  • Semi Finished Single Vision
  • Aogang
  • 9001509900
  • 1.56
  • 70mm
  • NK55, imported from Japan
  • 42
  • 1.15
  • > 97%
  • UC, HC, HMC
  • Base: 50~1000
Quantity:

Product Description

Production

1.56 semi finished single vision lens

Monomer

NK55, imported from Japan

Diameter

70/75mm

Coating Choice

hard coated

Abbe value

42

Specific Gravity

1.15

Transmission

>97%

Guarantee years

3~5 years

Power range

Base: 50~1000


Product Features

  • Semi-finished lenses:

 

Hard Coating Semi Finished CR 39 Lenses , 1.56 NK55 Reading Glasses Lenses Blank

1. The definition and production of semi-finished lenses

 

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.

 

The semi-finished lenses are produced in a casting process. Here, liquid monomers are first poured into moulds. Various substances are added to the monomers, e.g. initiators and UV absorbers. The initiator triggers a chemical reaction that leads to hardening or "curing" of the lens, while the UV absorber increases the UV absorption of the lenses and prevents yellowing.

2. Minus and plus semi-finished lenses

 

Lenses with different dioptric powers can be made from one semi-finished lens. The curvature of the front and back surfaces indicates whether the lens will have a plus or minus power.

Hard Coating Semi Finished CR 39 Lenses , 1.56 NK55 Reading Glasses Lenses Blank
  • Index 1.56: 

 

1. Aogang Middle Index 1.56 series lens represents the thinnest plus power lenses, give your frame what it really needs!

 

2. Lenses with a 1.56 index are considered the most cost effective lens on the market. They possess 100% UV protection and are 22% thinner than CR39 lenses.

 

3. 1.56 lenses can cut to fit the frames perfectly, and these lenses with knife edge finishing would suit those irregular frame sizes (small or large) and would make any pair of glasses look thinner than ordinary.

 

4. 1.56 single vision lenses have higher Abbe value, can offer wearers excellent wearing comfort.

Technical Data

technical data

Contact Us

contact us

QUICK LINKS

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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