Description
The WS-1 uses a PTFE optical diffuser, a Lambertian material distinguished by its white matte finish and reflectivity >98% from 250-1500 nm and >95% from 250-2200 nm.
Diffusing materials – choose from PTFE (WS-1) or Spectralon (WS-1-SL) standards
High reflectivity over broad range – >95% reflectivity from 250-2200 nm
More options – additional Spectralon reflectance standards and targets also available
| STAN-SSH | STAN-SSH-NIST | STAN-SSL | WS-1 | WS-1-SL | |
| Reflectance Material | Front surface-protected aluminum mirror on fused silica substrate | Front surface-protected aluminum mirror on fused silica substrate | Schott ND9 glass | — | — |
| Diffusing Material | — | — | — | PTFE | Spectralon |
| Reflectivity | ~87%-93% (200 - 1000 nm) ~93%-98% (1000 - 2500 nm) |
~87%-93% (200 - 1000 nm) ~93%-98% (1000 - 2500 nm) |
~5% (200 - 950 nm) ~4% (950-2500 nm) |
>98% (250-1500 nm) >95% (250-2200 nm) |
99% (400-1500 nm) >96% (250-2000 nm) |
| Spectral Range | 200-2500 nm | 200-2500 nm | 200-2500 nm | 250-2000 nm | 250-2000 nm |
| Housing Material | — | — | — | Alumimum | Delrin |
| Dimensions (Housing) | 38 mm outer diameter x 19 mm height | 38 mm outer diameter x 19 mm height | 38 mm outer diameter x 19 mm height | 38 mm diameter (housing) | 32 mm OD 10 mm thick (tile) |
| Dimensions (Substrate) | 31.75 mm outer diameter x 6.35 mm height | 31.75 mm outer diameter x 6.35 mm height | 31.75 mm outer diameter x 6.35 mm height | — | 10 mm thick |
| Weight | 40 g | 40 g | 40 g | 30 g | 30 g |
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