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CR39 1.499 Uncoated Optical Blanks Single Vision 58 Abbe Value PPG Material
Home » Products » Semi Finished Lens » SF 1.499 Single Vision Lens » CR39 1.499 Uncoated Optical Blanks Single Vision 58 Abbe Value PPG Material
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CR39 1.499 Uncoated Optical Blanks Single Vision 58 Abbe Value PPG Material

  • SF 1.499 UC White Lens
  • Aogang
  • SF 1.499 UC White Lens
  • 1.499
  • 65/70/75MM
  • CR39
  • 58
  • 1.32
  • 97%
  • UC/White
  • Base:50~1000
Quantity:

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Technical Data

CR39 1.499 Uncoated Optical Blanks Single Vision 58 Abbe Value PPG Material

 

Production 1.499 semi finished single vision lens
Monomer PPG
Diameter 55/65/70mm
Coating Choice UC
Abbe value 58
Specific Gravity 1.32
Transmission >96%
Guarantee years 5 years
Power range Base: 50~1000


Features

CR39 1.499 Uncoated Optical Blanks Single Vision 58 Abbe Value PPG Material

 

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.

 

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

 

3. 1.499 CR39 UC:

 

Aogang CR-39 lenses use the true value of imported CR-39 monomer, the longest history of resin material and the most widely sold lens in middle level country. This determines that Aogang CR-39 lenses have the most outstanding optical features:

 

----Hardness: The best among other index lenses in hardness and toughness, high impact resistance.

 

----Tintable: The most easily tinted than other index lenses.


----Transmittance: The highest transmittance as compared with other index lenses.


----ABBE: The highest ABBE value providing the most comfortable visual experience.

 

----Consistency: The most reliable and consistent lens product physically and optically.

 


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