OPTOStokes is the optical filter brand at Optofilters.com, supplying stock and custom-coated filters for UV, VIS, NIR and IR applications.

Browse by Filter Type

Start with the main optical filter families used in fluorescence, machine vision, analytical instruments, laser systems, and industrial optical assemblies.

Browse by Wavelength & Spectral Range

Explore filters by UV, visible, NIR, SWIR, and common wavelength regions used in detection, illumination, imaging, fluorescence, and laser-related applications.

UV Filters VIS Filters NIR Filters SWIR Filters 365nm 450nm 520nm 660nm 850nm 940nm 1064nm

Browse by Application

Use application-oriented topics when selecting filters for system design, prototype validation, replacement parts, or OEM optical integration.

Fluorescence Detection Machine Vision PCR Optical Filters Biomedical Imaging Laser Systems Industrial Inspection Analytical Instruments

Browse by Performance Parameter

Optical filter performance is often defined by CWL, FWHM, optical density, blocking range, transmission, spectral edge position, and coating uniformity.

CWL FWHM Optical Density High OD Blocking High Transmission Narrowband Coating Uniformity Thin Film Coating

Featured Product Categories

These core product categories provide stable entry points for engineers and buyers who need standard or custom optical filters.

Bandpass Filters

Narrow spectral transmission filters for fluorescence, machine vision, biomedical imaging, LED selection, and analytical detection systems.

Fluorescence Filter Sets

Matched excitation filters, emission filters, and dichroic mirrors for fluorescence microscopy, PCR, and life science instruments.

Dichroic Mirrors

Beam splitting and wavelength combining optics for fluorescence systems, optical instruments, and multi-channel imaging setups.

Neutral Density Filters

Broadband attenuation filters for light intensity control, imaging systems, photometry, calibration, and optical testing.

Notch Filters

High blocking filters designed to reject narrow wavelength bands while transmitting adjacent spectral regions.

Optical Flats & Laser Windows

Precision optical windows and flat optics for laser, imaging, inspection, and protective optical applications.

Selected Technical Resources

Explore selected technical resources related to optical filter coating, spectral performance, application selection, and manufacturing considerations.

Why do the edges of the image still appear dark despite all

The 808nm narrow-band filter has a dark edge angle on the lens with large field of view, which is mostly due to the blue...

How to install optical filters into a fluorescence filter cu

Learn how to install excitation, emission, and dichroic filters in a fluorescence filter cube: coating-side orientation,...

Infrared Filters for Security Surveillance | OPTOStokes

OPTOStokes provides precision IR filters for security systems, including IR cut filters for clear day-night imaging and ...

High-Precision Optical Flats & Fluorescence Filter Sets

Discover high-precision optical flats and fluorescence filter sets by OPTOStokes. In-stock and custom optical solutions ...

How do narrowband filters empower license plate recognition

OPTOStokes narrow bandpass filters enable high-accuracy license plate recognition in ITS. Expert guide on filter selecti...

Overcoming Thermal Drift in Precision Optical Flats and Band

Resolve temperature-induced wavelength drift in optical flats and bandpass filters. Learn thin-film thermal mechanics an...

Recently Added Tags

Recently added tags reflect new product pages, technical notes, and optical filter topics published on OPTOStokes.

Z filter Y filter X filter RGB color separation filter color measurement filter CIE tristimulus value filter colorimeter filter set XYZ chromaticity filter BP2.3um near-infrared spectrometer filter mid infrared filter 2300nm bandpass filter 2.3 μ m bandpass filter BP730 plant physiology detection filter chlorophyll fluorescence filter 730nm bandpass filter 730nm narrowband filter NIR narrowband filter BP1653 methane detection filter gas detection filter 1653nm bandpass filter 1653nm narrowband filter infrared optical filter laser ranging filter lidar filter 808nm narrowband filter industrial vision filter bandpass filter 808nm vignetting 808nm 12000Nm filter thermal imaging optics 12000nm optical filter infrared bandpass filter BP12000nm atomic absorption ICP OES filter UV narrowband 393.3nm bandpass filter emission filter excitation filter filter orientation fluorescence filter cube 10.4um optical filter ammonia detection filter gas sensing bandpass filter biometric recognition IR filters night vision optical filters dual IR filter switch mechanism IR filters for security cameras NDIR optics 5060nm filter gas sensing optics thin film filter 6485nm filter 600-1080nm filter SP1100nm machine vision optics 575-900nm filter SP950 1000nm filter LP1000 water turbidity chlorophyll fluorescence 500nm bandpass filter CCD sensors 850nm ITS license plate recognition narrow bandpass filters chlorophyll filter BP690nm 638nm filter 638nm vis filter 690nm filter Spectral Drift Optical Thin Film Thermal Drift IR sensing 7800nm Fluorescence Filter Sets fluorescence microscopy 770nm dichroic 645nm Bandpass Filter 575nm filter 510nm Bandpass Filter 2640nm filter telescope filters astrophotography CLS UHC light pollution filters 825nm filter 318nm UG5 filter optical substrate 532nm filter
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