Dichroic Filters – Custom Specified

Product Description

Dichroic filters separate a broad spectrum of light into two components: a reflected component and a transmitted component. They provide the ability to select different bands from a spectrum and direct those bands to where they can either be used or discarded. Heat / UV control, color separation, and fluorescence microscopy are a few of the most common uses of dichroic filters.

The majority of the dichroic filters that we manufacture are custom designed for OEM instrumentation such as germicidal monitors, endoscopes, cytometers, and many more. Working in partnership with the instrument manufacturer's optical engineers and scientists, we design custom dichroic filters that are optimized for the nuances of the instrument architecture and the analysis to be performed on it. This team approach enables delivery of the best cost / performance / time-to-market value to the instrument maker.

We make dichroic filters in several different configurations:

Single substrate, image quality, all-dielectric hard sputtered coating

Single substrate, general quality, all-dielectric hard sputtered coating

Single substrate, image quality, all-dielectric hard e-beam coating

Single substrate, general quality, all-dielectric hard e-beam coating

Dichroic Filter Specification Checklist

The list of parameters that follows includes the most common items used to specify a dichroic filter. Many of the parameters are general enough to apply to any optical filter. Care should always be taken to avoid over-specification. For example, specifying some of the specifications in the optical category such as transmitted wavefront error can, depending on the chosen value, have a significant impact on cost while providing no increase in filter performance if the filter is used in a photometric detection application. When using this checklist, the best strategy is to provide what is known to be important and allow our technical team to recommend other specifications from the list that will insure the best performance for the application. After completing the checklist, please call 508-528-4411 to speak directly to one of our Technical Sales Engineers, or email us at filters.sales@newport.com to address your specific requirements.

Dichroic Filter Specification Checklist

Operating Conditions
Operating Temperature
Storage Temperature
Angle of Incidence
System Speed
Illumination Source
Polarization State
Length / Length tolerance
Width / Width tolerance
Thickness / Thickness tolerance (or max)
Active Area (min)
Edge treatment-Bevel
Edge treatment-Ring
Surface Quality
Flatness (S1)
Flatness (S2)
Transmittance band
%Tavg in transmittance band
Reflectance band
%Ravg in reflectance band
Cut-on wavelength (nominal @ 50%Tpk)