Semrock Optical Filters
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IDEX Health & Science
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Precision Optical Filters For Fluorescence Imaging Applications
Find What You Need
Browse individual filters, explore filter sets, or request a custom optical filter design. Refine results by wavelength, fluorophore, laser line, filter family, application, and other optical specifications.
Shop Individual Optical Filters
Browse bandpass, edge, notch, and dichroic beamsplitters.
Request Custom Optical Filters
Develop a custom optical filter designed for your instrument requirements.
Visualize and Optimize Your Spectral Data with SearchLight™
Model and compare fluorophores, optical filters, light sources, and detectors to optimize your fluorescence imaging system performance with our Semrock SearchLight spectral modeling and analysis tool.
Engineering Capabilities & Technical Resources
IDEX Health & Science | Semrock designs and manufactures high-performance optical filters and filter sets for fluorescence imaging, analytical instrumentation, and OEM integration. Explore technical documentation, engineering capabilities, and application resources to support system design and optimization.
Discontinued Semrock Optical Filter Products
Check discontinued filter individual part numbers, sets, and product revisions.
Product Returns For Semrock Optical Filters
Start a return for your new, unused, standard-sized catalog optical filters.
Latest Semrock Optical Filter Updates
Quick Ship Filters, 1 - 3 Day Delivery
This program is designed to match the pace of your innovation. Access next day shipping on 175+ of our most popular filters.
Design Smarter, Spend Less
Learn how to engineer your system for performance and value by exploring the three costliest optical filter spec mistakes.
Silver Honoree Innovators Award
Our new Semrock BrightLine® 2.0 filter sets from IDEX Health & Science were just awarded Silver Honoree for the Laser Focus World 2025 Innovators Awards.
Optical Guides & White Papers
Explore in-depth application guides and white papers.
Customizing Catalog Optical Filters Guide
In the world of high-quality optical filters, where precision is paramount, the ability to tailor parts to your exact requirements is essential. This guide will introduce you to our available customization options.
Custom Filters without the High Costs Guide
This brochure explores the cost drivers of implementing a custom filter into an instrument to debunk the myth that custom must mean costly.
Semrock Raman Optical Filter Catalog
Download our new Semrock Raman Optical Filter Catalog for the latest Raman updates, technical notes, and optical filter product information.
Essential Performance Optical Filter Catalog
Semrock Essential Performance optical filters from IDEX Health & Science deliver comprehensive, cost-effective solutions that align cutting-edge performance with accessible budgetary considerations. Explore our new catalog now!
The Semrock Advantage in Optical Performance
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.