Witness Sample, Transmission, 1.800-2.000Esco PN:
Esco Optics witness samples used for transmission 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. Witness sample diameter is 25.40mm and the thickness is 1.50mm.
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||1.50 mm +/-0.25|
|Flatness||< 1.0 wave @ 633nm|
|Surface Quality||60-40 scratch-dig|
|Edges||Fine ground and beveled|
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