Band Pass Filters

High-performance
Delivering high in-band transmission and deep out-of-band blocking, these filters utilize ultra-stable multilayer dielectric coatings to achieve precise spectral performance across a wide wavelength range.
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Two circular unmounted band pass optical filters overlapping on a reflective black surface, one showing a teal and cyan interference coating and the other a deep blue and purple coating, with colorful reflections beneath.

Key Features

Up to OD6+ blocking
Fully custom designs
Made to order
Hard dielectric thin film coatings
Durable Quadrode™ plasma PVD technology
As narrow as 1% bandwidth FWHM
Up to 95% average transmission
Available mounted or unmounted
Spectral transmission chart for a 575 nm band pass filter, showing greater than 90% transmission across a 50 nm passband from approximately 550 to 600 nm, with steep edges dropping to near zero blocking on either side.

Technical Specifications

PARAMETER
SPECIFICATION
Center Wavelength (CWL)
300-1800 nm standard; custom available
Blocking
Up to OD6+
Transmission
Up to 95% average
Passband width
1% FWHM
Coating Type
Hard dielectric coatings utilizing Quadrode™ plasma PVD technology
Substrate Materials
Borofloat, Fused Silica, BK7, Custom
Surface Quality
60-40 scratch-dig
Clear Aperture
>85% of diameter on mounted parts
Configuration
Mounted or unmounted
Custom CWL / Sizing
Available on request
Environmental
Please contact for full environmental specifications

Request a Quote

Contact our team for pricing, custom specifications, and lead times.

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