Esco Optics, Inc.

Transmission Wedge Witness Sample

Transmission Wedge Witness Sample - Main image
$16.25 $25 In stock

Category: Wedge Witness Samples

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 wedge side has a polished face at 8º +\-0.50 degrees. 

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 8º +/- .5 degrees
Flatness < 1 wave @ 633nm 
Surface Quality 60-40 scratch-dig
Edges Fine ground and beveled
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Customer Reviews (4.8 / 5 · 5 reviews)

Aurora R. ★★★★★

The parallelism spec held up exactly as stated when I checked it against a reference flat—both sides were within that 1 wave tolerance. Polished finish is genuinely clean with no visible digs or scratches under a bright lamp. Exactly what I needed for verifying my setup.

Aurora S. ★★★★★

Got these to check the parallelism on our setup and the wedge angle held up nicely under the interferometer. Scratch dig of 60-40 looked accurate too, no visible sleeks even under a bright lamp.

Lucy W. ★★★★★

Both sides are polished so cleanly that I can see no scratches even under bright light—exactly what I needed for calibration.