Aluminium Mirrors - Lightweight Optics
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.
Aluminium mirrors may by optimized for lightweight systems by applying weight reduction structures on the back.
Aluminium polygonals are the best choice for precision measurement solutions and optical systems. They are available from Diameter 20 to 300 mm.
Our mirrors are coated for maximum reflectivity. PLEIGER’s manufacturing capability covers optics for CO2-lasers and optical instruments. Coating options are protected gold or silver and high power coatings for CO2 and YAG lasers.
Aluminium 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]