Mounted dichroic beamsplitters shortwave reflecting filters 45° AOI
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These dichroic beamsplitters are a special type of interference filter, they split the light into two or three spectral bands, some are transmitted and the others reflected with negligible absorption. This type of filter is ideal for high powers and lacks the strong fluorescence of certain glass filters. Generally the bands are based on the three primary colours of red, green and blue. Dichroic beamsplitters are widely used in LCD projectors and in some sensor systems. As the name suggests these are used at 45° incidence and the reflected light is deviated through 90°. Typical applications for dichroic shortwave reflecting beamsplitters are in separation of laser wavelengths in fluorescence microscopy.
The filters listed here are a selected range of mounted dichroic shortwave reflecting beamsplitter filters. There are two options of 25.5 and 30.5mm x 0.5mm thread sized mounts that both fit standard 25mm diameter filters with a 22mm dia clear aperture.
These mounts have male threads with 0.5mm pitch threads and are designed to fit standard fixed focused and megapixel lenses. These mounted filters for example screw directly onto Tamron, Fujinon and Sony lenses which have a 25.5 thread on the front.
These mounted filters allow for easier integration and alignment in optical systems as well as safer changing of filters in systems that require switching between wavelengths.
A wide range of unmounted dichroic shortwave reflecting beamsplitters are available in a range of stock sizes as individual filter wavelengths or unmounted sets. For ease please view the links within “see also” tab below.