Each flat is figured by our skilled opticians, certificated with a serial number and identified on the edge. Single sided flats are polished on the second face to workshop standard. Double sided flats are to full specification both faces. All flats are tested in our QA department and certification traceable to UK National Physical Laboratory standard provided on all flats.
► Silica or Zerodur
► Lambda/20, Lambda/10 or Lambda/4 at 633nm
► 25mm to 150mm Ø with larger sizes on request
► Single sided or double sided
► Certificate supplied traced to N.P.L. reference
► Partial reflective coating supplied on request
► Ø <75mm +1/-0mm : T ±0.5mm : Parallelism 3’
► Ø ≥75mm +2/-0mm : T ±0.5mm : Parallelism 3’
