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Optical Products > Trivex > Performance & Properties
Performance & Properties
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Trivex® material offers the best comprehensive lens performance. |
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Properties:
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Trivex® |
CR-39™ |
Poly |
Mid-Index |
Hi-Index |
| ABBE |
43 - 45 |
58 |
31 |
34 - 41 |
32 - 41 |
| Scratch Resistance (Bayer Abrasion) |
0.4 |
1.0 |
0.2 |
0.3 - 0.5 |
0.5 |
| FDA Impact Resistance (@ 1.0mm) |
Pass |
Fail |
Pass |
Fail |
Some Pass |
| Z-87.1 '89 Impact Resistance |
Pass |
Fail |
Pass |
Fail |
Fail |
| Specific Gravity |
1.11 |
1.32 |
1.22 |
1.20 - 1.34 |
1.30 - 1.40 |
| Refractive Index |
1.53 (546nm) |
1.50 |
1.59 |
1.53 - 1.57 |
1.59 - 1.71 |
| Chemical Resistance* |
Good |
Good |
Unacceptable |
Good |
Good | * According to the ASTM : D543 - 95 Standard Practices for Evaluating the Resistance of Plastics to Chemical Reagents, Practice A, Procedure I
Trivex® UV cutoff (394nm)
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Processing:
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Trivex® |
CR-39™ |
Poly |
Mid-Index |
Hi-Index |
| Surfacing |
Good |
Very Good |
Difficult |
Good |
Good |
| Tint Rate |
Very Fast |
Fast |
Non-tintable |
Average |
Fast |
| Typical Center Thickness (mm) |
1.2 |
1.8 |
1.5 |
1.5 |
1.5 | | |
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Optical Performance:
ABBE value of 43-45 provides uncompromising visual acuity.
Impact Resistant:
Passes FDA drop ball test at 1.0mm center thickness and meets ANSI Z87.1 '89 standards*.
Light and Thin:
Lowest density commercial lens material combined with high strength at 1.0mm center thickness.
*Subsequent processing and coating additions may reduce impact resistance. Check with your lens supplier for certifications.
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Trivex® lens material provides a balance of the most important properties for prescription eyewear! |
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