colorPol® polarizers are dichroic glass polarizers with high contrast and very good transmittance properties. As standard products colorPol® polarization filters are available in the wavelength ranges UV (355 - 420 nm) as well as VIS and IR (475 - 5,000 nm). In the near infrared range (1200 - 2,500 nm) we recommend the use of our colorPol® HT series with especially high transmittance of up to 98 %.
In the specified wavelength range, minimum values of contrast and transmission are guaranteed. In the designation e.g. C4 stands for contrast >10.000 : 1, i.e. 104. The spectral position of maximum polarization and contrast are adjusted by the selected technological parameters. The wavelength range, contrast and transmission of the polarizer can be adapted to customer-specific requirements.
The typical thickness of the polarizers is 0.2 (± 0.05) mm to 0.5 (± 0.05) mm. Larger thicknesses are possible by laminating between carrier glass. CODIXX offers a thickness of 2.0 (± 0.2) mm as standard dimension for laminated parts. Other dimensions and shapes can be provided upon customer request.
Thanks to the unique colorPol® technology, CODIXX is the first manufacturer of structured polarizers worldwide. colorPol® S polarizers have arbitrarily shaped areas with different orientations and wavelength ranges of polarization. Structure dimensions down to 10 µm are possible
Unlaminated | Laminated1) | |
| Optical parameter | ||
Transmitted wavefront distortion (TWD) | < 3 λ | < λ/4 |
| Beam deviation | < 20 arc min. | < 1 arc min. |
| Accuracy of polarization axis to edge 2) | < 0.5° | |
| Acceptance angle 3), 4) | ± 20° | |
| Refractive index at 633 nm (RI) 5) | 1.525 ± 0.005 | |
| Cosmetic parameter | ||
Usual surface quality 6) | in dependence on MIL-O-13830A: S/D 40/20 | |
| Mechanical parameter | ||
| Clear aperture (CA)7) | 80% for parts < 2 x 2 mm² 90% for parts < 20 x 20 mm² 95% for parts ≥ 20 x 20 mm² | |
| Edge chips8) | 0.25 mm < 0.05 mm on request | |
| Specific weight | 2.5 ± 0.1 g/cm³ | |
| Coefficient of elasticity E | 70 ± 5 kN/mm² | |
| Physical parameter | ||
| Coefficient of thermal expansion (CTE) | 8.1 ± 0.3 x 10-6 K-1 (0-100°C) | |
| Specific heat | 1.0 ± 0.1 J/gK | |
| Thermal conductivity | 0.94 ± 0.05 W/mK | |
| Durability | ||
| Thermal cycle | -40°C to +80°C 200 cycles (DIN EN 60068-2-14 method Na) | |
| Humid storage | 85°C, 85% rel. humidity, 1,000 h according to Telcordia GR-1221-CORE | |
| UV-stability | UV-stability 20 mW/cm² after 60 h irradiation without any degradation | |
| Chemical resistance | colorPol® polarizers are insensitive to most organic and cleaning solvents, acids and bases 9) and distilled water. | |
1) laminated, ground an polished
2) less tolerance available upon request
3) exceeding this angle may lower contrast and transmittance
4) AR-coating may limit this angle
5) RI for other wavelengths on request
6) other quality grades available on request
7) AR-coated parts can have a circumferential coating edge up to 1mm wide
8) other specifications available on request
9) AR-coating may limit the resistivity