Witness Samples, WedgeEsco PN:
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 +\-0.50deg. The diameter is 25.40mm and the thickness is thin edge is 2.0mm +\-0.20.
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.
|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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