Leightweight aluminium mirrors are used in optical systems for a variety of reasons. Some advantages lightweight mirrors include shorter thermal equilibrium times, reduced weight, and lower system costs. Aluminium can easily be processed with SPDT technology. Especially novle aluminium alloys allow for surfaces with a very smooth micros roughness, even better than 3 nm rms.
Our mirrors are coated for maximum reflectivity. PLEIGER’s manufacturing capability covers optics for CO2-lasers and optical instruments.
Silicon mirrors are available plano and spherical.
Aluminium Properties / Standard Specifications / Options
Electrical resistivity ( µ Ω cm ): 2,65
Temperature coefficient ( K-1 ): – 0.0039
Density ( g cm-3 ): 2,70
Melting point ( °C ): 585
Thermal conductivity @23 °C ( W m-1 K-1 ): 150-202
Diameter: +/- 0,1 mm
Thickness: +/- 0,2 mm
Paralleslism: < 3 arc min
Clear aperture: 90 % of diameter
Figure: 1/40 wave at 10,6 µm
– internal cooling
– Coatings [more]