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POLYCARBONATE

1.59 Index
  • Very strong and light with high impact resistance
  • Ideal for sports protection
  • Used widely for rimless spectacles
  • UV protection up to 380nm
  • THIS LENS IS ALSO NOT SUITABLE FOR TINTING
 

Polycarbonate plastic

  • Was introduced in 1983 and was the original high index lens material and It provided the ability to make thinner and lighter lenses.
  • It suffers from chromatic abberation [ colour fringes ] due to it's low abbe value but has great impact resistance, compared to newer technology, such as high index plastic 1.61 and 1.66 lenses.
  • It is often prescribed to peaple with active and dangerous working lives, ie: Emergency services.
  • Until the recent introduction of PPG's Trivex lens technology, it was first choice for rimless eyewear.
 

Qualities

  • High impact resistance
  • Thinner and lighter than 1.5 index plastic or standard glass.

 

 

 

Drawbacks

  • Poor optical qualities, low abbe value.
  • More chromatic abberation than most other lenses.
  • More prone to scratching than other high index plastics.