Sputtered Neutral Density Filters
Neutral Density (ND) filters are designed to reduce transmission evenly across the spectrum for which they are designed. They are utility filters that are used to control the amount of light that passes into an optical system with high value applications across a broad range of use cases including spectroscopy, microscopy, machine vision, and inspection.
These filters are typically defined by their Optical Density (OD) which describes the amount of energy blocked by the filter. A high OD value indicates low transmission and low OD indicates high transmission. To achieve even higher OD, Neutral Density filters can be stacked in an optical path and their OD values are additive - for example, an OD3 and OD4 in series would theoretically be the same as an OD7 single filter.
Chroma’s ND filters are manufactured by coating NiCr using a sputtering process onto high quality fused silica substrates for high uniformity, durability, and broad spectral application from UV to the SWIR range. We offer a variety of ND filters with transmissions between 0.001% (OD5) transmission and 80% (OD0.1) transmission. We can also customize to meet your specific application needs.
Showing 14 products
No Results Found.
Sorry we did not find an results for the criteria you specified.
Please try changing the narrow by filters on the left, or the search within keyword field.
If you still can't find what you're looking for, please contact us:
sales@chroma.com 800-824-7662 +1-802-428-2500, or request a quote.