Committed to the Future, Fulfilling the Promise of Excellence

Precision optical reference plate processed with high-precision grinding and polishing  achieves excellent surface flatness, becoming the best choice for interference measurement, imaging system, laser application, and automatic calibration.

Precision optical (reference plate) Specifications

Material ZERODUR、CLEARCERAM™-Z、Fused Silica
Diameter(Φ) 10mm~310mm
  Low grade General grade High grade
Diameter tolerance +/-1mm ±0.5mm ±0.2mm
Surface quality 60/40 40/20 20/10
Parallelism 3’ 1’ 30”
Surface flatness 1/4λ@ 633nm λ/10 @ 633nm λ/20 @ 633nm

Thickness tolerance

±0.8mm ±0.5mm ±0.1mm