| Material |
Characteristics |
Acrylic
(PMMA) |
Polystyrene |
Polycarbonate
(Optical Grade) |
NAS |
Polyolefin
(Zeonex) |
Arton F |
Optores
(OZ1000-1100) |
Optores
(OZ1310-1330) |
| Optical |
Spectral Passing Band (nm) |
390-1600 |
360-1600 |
395-1600 |
300-1600 |
390-? |
390-? |
410-? |
|
|
Refractive Index @
589nm @25oC |
1.491 |
1.590 |
1.587 |
1.563 |
1.525 |
1.51 |
1.4995-1.5025 |
1.5059-1.5096 |
|
| Abbe Value |
57.4 |
30.9 |
29.9 |
33.5 |
56.3 |
57 |
57-56 |
54-52 |
|
Transmittance (%)
Thickness 3.2mm |
92 |
92 |
90 |
90 |
91 |
92 |
92 |
92 |
|
Haze (%)
Thickness 3.2mm |
1.3 |
1.5(?) |
1.7(?) |
1.5(?) |
1.5(%) |
1.5 |
1(?) |
1(?) |
|
| Physical |
Specific Gravity |
1.19 |
1.06 |
1.20 |
1.09 |
1.01 |
1.08 |
1.16 |
1.19 |
|
Max. Service
Temperature (C) |
90 |
80 |
120 |
85 |
123 |
171 |
95-100(?) |
80-100(?) |
|
| Linear CTE |
6.8x10-5 |
7x10-5 |
6.6x10-5 |
7x10-5 |
7x10-5 |
6.1 |
7 |
7 |
|
| Abrasion Resistance (1-10) |
10 |
4 |
2 |
6 |
>11 |
? |
? |
? |
|
Izod Impact Strength
1/4" notched |
1 |
1(?) |
12 |
1.6(?) |
3.2(?) |
2 |
? |
? |
|
| Environmental |
dN/dT(x10-6) |
-105 |
-104 |
-107 |
-110 |
-130 |
-35 (?) |
-100 |
-100 |
|
| Sensitivity to Humidity Water absorption (%) 23C, 1 week |
High
2.0 |
Low |
Low
0.4 |
Mid |
Low |
Low
0.4 |
Low
1 |
Low
1 |
|
| Manufacturability |
Process-ability |
Excellent |
Good |
Poor |
Excellent |
Good |
TBD |
TBD |
TBD |
|
| Birefringence |
Very Good |
Fair |
Poor |
Good |
Good |
Good |
20% better than PMMA |
Excellent |
|
| Chemical |
Resistance to Methanol |
limited |
? |
limited |
? |
? |
Good |
? |
? |
