What is the Abbe no. of Polycarbonate and Trivex?

[soumya]

:) Greetings to all. I am a final year student of Bachelor in Optometry from India. I want to know the Abbe value of Polycarbonate and Trivex. And I want to know the comarision between these two materials.

[GOS_Queen]

Here's a great article I found on the subject of lens materials that should have the information you are looking for ~

http://www.firstvisionmedia.com/uww/...avvy_lens.html


Welcome to Optiboard :cheers:

[Bill Mahnke]

Most consider the abbe of Polycarbonate to be 29 although it's usually rounded up to 30. The abbe value of the Trivex monomer as is comes from PPG is 45. The abbe of Trivex lenses will vary from one lens brand to another. For example HOYA PNX/Phoenix is 43, Younger Trilogy is 44 and so on.

There's a ton of great information available on Trivex lenses. The best place to start is with PPG - the company that produces the monomer. Please PPG visit at;

http://corporateportal.ppg.com/NA/chemicals/Optical/Trivex/

Hope this helps!

Bill Mahnke
HOYA VisionCare