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.

Pesticide Detection Methods & Optical Filters | OPTOSto

Explore pesticide residue detection methods like chromatography & spectrometry. OPTOStokes optical filters deliver e...

Dragon Boat Festival 2026 Holiday Announcement

OPTOStokes announces its 2026 Dragon Boat Festival closure schedule. Check holiday dates, service rules, and contact us ...

What Are Infrared PMMA Filters?

OPTOStokes infrared PMMA filters block visible light (<1% T) and transmit 80-95% NIR. Custom IR acrylic panels with a...

What Materials Are Optical Thin Films Made Of?

Learn about optical thin film materials, their behavior during deposition, stoichiometry changes, and analysis technique...

How Does the Angle of Incidence Affect Optical Filter Perfor

Learn how angle of incidence (AOI) affects optical filter performance, including center wavelength blue shift, and best ...

​What is the Working Principle of a Color Sorter?

Learn the working principle of color sorters, including optical detection systems, core components, and how OPTOStokes o...

Recently Added Tags

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

laser measurement 3D profiling 1245nm bandpass filter 1170nm optical filter OD3 filter spectroscopy 1170nm bandpass filter optical coatings SWIR inspection 1555nm filter bandpass coating gas detection 1680nm filter infrared BP1064 UV filters pesticide detection customer support order processing holiday announcement Dragon Boat Festival optical flats NIR window 1000-1800nm anti-reflective window VOC detection 160nm FWHM IR filter 3300nm bandpass filter INBP3300 2360nm bandpass filter INBP2360 analytical instruments sapphire germanium 2125nm bandpass filter INBP2125 630-770nm 380-600nm 470-700nm 380-425nm anti-counterfeiting fluorescence NDT 510-700nm 380-488nm 2mm 10:90 beam splitter thin film coating 80:20 beam splitter spectral analysis environmental monitoring 880nm longpass filter LP880nm multispectral imaging 1.5mm BP850 BP450 industrial inspection 110nm FWHM 440nm bandpass filter BP440nm small animal medicine 420nm bandpass filter BP420nm biomedical imaging biochemical analysis 415nm bandpass filter BP415nm food detection UV filter 313nm bandpass filter BP313nm non-destructive testing moisture detection 60nm FWHM 1400nm bandpass filter BP1400nm material analysis NIR spectral sorting 1300nm bandpass filter BP1300nm lenses windows ir-filters dichroic bandpass product-catalog optical-filters wafer defect check semiconductor inspection 266nm bandpass filter BP266 400-700nm aluminum coated mirror laser systems UV laser marking 355nm bandpass filter BP355nm water quality testing 0.7mm deep UV filter
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