Microstructures can be created on a variety of substrate materials.
Certain materials are available as standard substrates with a choice of thicknesses.
Standard materials and thicknesses
- B270 superwhite
(1.0mm; 1.5mm; 2.0mm; 3.0mm +/-0.1mm) - D263T thin glass
(0.145mm; 0.17mm; 0.21mm; 0.30mm; 0.4mm +/-0.02mm; 0.55mm +/-0.05mm) - Different types of fused silica
- Soda lime glass
Custom substrate materials and geometries
Limitless options are available upon request:
- A variety of optical glasses from manufacturers such as Schott, Ohara, Hoya.
- Ceramics
- e.g. Rubalit 708/710
- White surface finish, high contrast ratio with (black) chrome
- Matt finished surface
- Diffusing & high-scatter surfaces (increased edge roughness of the structures may apply)
- Cost-efficient materials with reduced surface flatness and parallelism
-
Glass ceramics
- NEXTREMA®
- White surface finish, high contrast ratio with (black) chrome
- Diffusing, scattering, matt finished surfaces with no direct reflection and reduced edge roughness compared to other ceramics
- Polished surface with feature sizes and edge roughness as available on glass substrates
- High mechanical, thermal and chemical stability
- Nearly zero coefficient of thermal expansion
- Dense and porous-free surface – easy to clean
- Very good surface flatness possible
- Substantial cost reduction compared to other zero-expansion glass ceramics
- Nextrema® Data Sheets: SCHOTT NEXTREMA® types of material
- Nextrema® 724-8(white)
- Nextrema® 724-3(transparent)
- Nextrema® 712-3(dark)
- ZERODUR® / ZERODUR® K20
- NEXTREMA®
- Si - Silicon
- Ge - Germanium
- ZnS - Zinc Sulfide
- CaF2 - IR Grade Calcium Fluoride