Optical Flats

Select the required parameters and click ‘request quote’ to autofill the form at the bottom right of this page, then fill out your email address and we will get directly into contact with you. This tool is to give us a general idea of what you require, the final specifications can only be reached after discussing the various options and deciding on more detailed parameters after reviewing design performance, optical substrate, etc.

Our brand new flat polishing machine can handle optical substrates up to 500 mm in diameter.

Sample test reports for our 165 mm (semi major axis) optical flat mirror
Diameter The physical diameter of the optical flat
MaterialChoice of Supremax 33, fused silica or zerodur. For most applications Supremax will be sufficient.
Surface qualityRequired optical performance choice of 0.95, 0.97 or 0.98 strehl. We recommend a minimum of 0.97 strehl.
CoatingChoice of mirror coating based on the desired spectral response. For visual wavelengths we recommend the enhanced aluminium coating.
Protective quartz layerA protective layer that’s much harder than the aluminium coating, this greatly increases the amount of time between recoatings and also protects the reflective layer during cleaning.