An optical flat is a precisely polished flat surface which may be used as a reference to measure the flatness of an unknown surface.
Artifex Engineering offers both single surface and dual surface optical flats.
We will gladly customize to your requirements.
Additionally we offer standard optical flats in N-BK7 or Fused Silica. We offer two different levels of accuracy: λ/10 and λ/20 for our single surface optical flat. For our dual surface optical flat, λ/10 is available. The secondary surface of our single surface flats is pitch polished to window quality for viewing the interference pattern. Our dual surface optical flats are precision ground and polished to stated accuracies on both surfaces so that either face may be used for test applications.
We provide a Zygo® test report with each flat.
® Zygo is a registered trade mark of Zygo Corporation
Optional Accessory: Felt lined protective case with hasp.