6 inch Attenuations Filter
Category: Accessories
- Description
This attenuation filter is used to optimie measurement of highly reflective parts and helps produce good fringe contrast. The filter is positioned between the test part and a standard transmission flat.
Specifications:
Quality : ≤ ?/10 Transmitted wavefront (PVr) Transmittance (4 in. filter) : 20 ± 4% @ 10° angle of incidence @ ?=632.8 nm through the pelicle
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