SL-ND-KIT-V2-2
BTS SL-ND Filter
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$600.00 – $1,020.00
The Neutral Density (ND) Filter Kit for the Imatest Stray Light LED Source provides a way slide filters in and out of the beam path, especially useful for attenuating the light source. The stray light source projects an image of a small point-like source as a uniform, collimated beam of light. When imaged by a camera, the saturated image of the source produces stray light that can be visually inspected or analyzed using Imatest stray light analysis software. In cases where camera exposure or gain cannot be sufficiently reduced, a ND filter can be placed in the beam path to reduce the light intensity further, allowing capture of an unsaturated image of the source.
Description
This kit includes a 50mm filter mount and an optional 2.5 Optical Density reflective ND filter with uniform reflectivity across 190nm – 1,700 nm. The stand provides a way to slide filters in and out of place. A ND filter can be used to attenuate light, allowing one to more easily capture or inspect an unsaturated image of the source.
BTS Stray Light ND KIT Features
- Allows for easily sliding filters in and out of place on the BTS.
- Accommodates other optics mounted within the included 50mm ring mount or within the M4 slot.
- ND Filter: features excellent parallelism and surface characteristics to provide constant, ultra-broadband performance from 190 – 1700nm.
- Miniature tip-tilt stage to ensure proper filter-to-light source alignment
| Specifications | Details |
| Weight: | 2 Kg (4.5 lbs) |
| Dimensions: | 197 x 375 x 315-460 mm (7.75” x 14.75” x 12.4-18.1″) |
| Mounting Options: | Designed for versatile placement over BTS |
| Filter Mounting Options: | 50mm ring mount and M4 clearance slot 100mm long |
| ND Filter Specifications | Details |
| Neutral Density Filter: | 2.5 OD UV-NIR Reflective ND Filter |
| Blocking Wavelength Range: | 190 – 1700nm |
| Diameter: | 50mm |
| Thickness: | 5.00mm ±0.10 |
| Clear Aperture: | 80% |
| Substrate: | Fused Silica (Corning 7980) |
| Coating: | Metallic Based ND |
| Surface Quality: | 40-20 Scratch-Dig |
| Transmission: | 0.3% |
| Transmitted Wavefront, P-V: | λ/4 |
| Parallelism: | <5 arcsec |
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