witness sample, fused silica, bk7, optical glass

Transmission Wedge Witness Sample

Esco PN:
  • $ 2500

Esco Optics transmission wedge witness samples are precision polished on both sides to a scratch dig of 60-40. Flatness of each side is < 1 wave @ 633nm at 80% CA. Parallelism < 1 arc min. Edges are safety beveled. The second side has a ground face at 8 degrees +\-0.50 deg. 

All of our witness samples are melt lot controlled and individual melt data is available on request. The refractive index values listed are representative of nd at 587nm. 

Diameter 25.40mm +\-0.10
Thickness (Thick End) 8mm +/-0.20
Wedge Angle 8 Deg +/- .5 deg
Flatness < 1 wave @ 633nm 
Surface Quality 60-40 scratch-dig
Edges Fine ground and beveled


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