See More In Your System - Optical Filters Engineered to a Higher Standard
As the industry’s best for high-performance optical filters, Semrock products from IDEX Health & Science deliver the stability required for life science, analytical, and medical diagnostic instrumentation. By utilizing proprietary hard-sputtered coatings, our filters eliminate environmental degradation and drift—a level of reliability backed by our 10-year warranty. We ensure faster measurements and minimal downtime by prioritizing steep edges and deep blocking to maximize your signal-to-noise ratios. From standard components to custom solutions, Semrock filters provide the superior stability and spectral precision necessary to optimize the most demanding optical systems.
Our IDEX Health & Science Center of Excellence in Rochester, New York is the home to our Life Science Optics division. Take a tour of our world class optical coating facility, with scaled-up sub-system manufacturing and expanded optical sub-system design capabilities. Learn more about our custom capabilities.
Supporting the Scientists and Engineers Behind Life Changing Technologies
We serve the global life science and analytical instrumentation community—working with customers who depend on optical precision, reliability, and long term consistency to deliver accurate results.
Key Application Areas:
Across these audiences, our customers share a common challenge: designing systems where every photon matters. Semrock filters are trusted in applications ranging from early stage discovery to regulated clinical environments because they are engineered for advanced performance and reliability.
Shop Individual Filters
Select your bandpass, edge filters, dichroics, and more by key fluorophores.
Shop Optical Filter Sets
Explore single-band and multi-band sets for popular applications and wavelengths.
Shop by Fluorophore
Looking for a filter set to go with your fluorophore? Discover which filter sets are compatible with popular fluorophores.
Discontinued Semrock Optical Filter Products
Our products are regularly revised to improve performance. Find replacement products here.
SearchLight
Select the elements of your fluorescence system and quickly calculate a relative signal brightness, autofluorescence level, and signal to noise ratio.
Why Choose Semrock Optical Filters? Performance, Reliability, and Repeatability
In demanding life science systems, reliable optical performance is not optional, it directly determines data quality, instrument uptime, and long-term success. Semrock optical filters are engineered to deliver consistent, stable spectral performance due to our proprietary hard-sputtered thin-film coating technology. Combined with rigorous design control, advanced metrology, and tight batch-to-batch consistency, this approach ensures filters perform as specified throughout the life of an instrument. The result is reduced risk and reproducible measurements—backed by a 10-year warranty.
Our team works closely with system designers to optimize filter performance within the context of the entire optofluidic pathway—including light sources, fluorophores, detectors, objectives, and system geometry.
Check Out Sample Spectral Modeling Simulations
SearchLight model of a Semrock pentaband filter set with five fluorophores and the Lumencor Spectra III Light Engine®
Semrock model of quad-fluor (DAPI-FITC-PE-APC) microscope with pentaband dichroic
