B-270 is a commercially available material that has excellent optical transmission. The material comes in drawn form in a variety of thickness & sheet sizes, and the drawn surfaces can be polished to improve the optical performance. Most sheet sizes are about 35″x 66″Contact one of our Application Engineers for further information.
Applications:
Optical substrates, glazing, image-forming optics, electronics, laboratory and coating substrates. Flatness, parallelism, cutting tolerances, roughness, cosmetic defects and visual inspection all conform to the specifications.
Properties:
| Refractive Index | nd=1.5230 @588 nm |
| Density | 2.55g/cm3 |
| Young’s modulus (E) | E= 71.5 KN/mm2 |
| Thermal Coefficient of Expansion | (0-300℃) = 95 x 10-7/℃ |
| Dielectric Constant | E=7 |
| Dielectric Loss Factor | 30×10-4 |
Transmission Curve
