witness sample, fused silica, bk7, optical glass

Witness Samples, Wedge

Esco PN:
  • $ 1575

Esco Optics reflective wedge witness samples are precision polished on one side normal to the edge. The scratch dig is 60-40. The flatness of normal side is < 2 waves @ 633nm at 80% CA. Both edges are chamfered. 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 < 2.0 waves @ 633nm 
Surface Quality 60-40 scratch-dig
Edges Fine ground and beveled


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