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witness sample, polished 2 sides, fused silica, fused quartz, bk7, optical glass,

Witness Sample, Transmission, 1.500-1.600

Esco PN:
  • $ 000

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 90% CA. Parallelism < 1 arc min. Edges are safety beveled. Witness sample diameter is 25.40mm and the thickness 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.