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.

How Can We Overcome Thin‑Film Degradation in Precision Optic

Eliminate optical filter degradation and passband drift with high-density coatings. Learn how OPTOStokes ensures long-te...

What Is Filter Blue Shift?

Understand angle blue shift in narrowband interference filters, with practical optical design solutions to preserve sign...

220nm & 275nm UV Bandpass Filters | Specialized Optical

Premium 220nm and 275nm UV bandpass filters engineered for Total Nitrogen water quality analysis. High UV transmission a...

How do we diagnose and optimize the BP585 bandpass filter wa

Facing a wavelength shift from 585nm to 554nm in PCR instruments? Learn how non-collimated white LED light causes optica...

How to Achieve Multiple Spectral Bands on a Single Glass Sub

Description: Optimize your optical system with OPTOStokes' multi-band optical filters. Precision single-substrate s...

Pesticide Detection Methods & Optical Filters | OPTOSto

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

Recently Added Tags

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

Bandpass Drift Filter Durability Thin Film Aging 1000nm bandpass filter NIR optical filter 970nm bandpass filter BP1035 laser optical filter 1035nm filter infrared camera filter BP488 488nm bandpass filter visible filter 430nm filter NIR bandpass coating 905nm LiDAR optical filter 895nm narrow bandpass filter VIS-NIR filters 60/40 surface quality LP505 long pass filter optofilters cut on filter LP510 510nm filter visible blocker NIR longpass 630nm bandpass filter 660nm PCR Optical Filter CWL FWHM 405nm filter green bandpass 525nm filter dichroic filter color sorting filter lp470 filter optical edge filter 435nm filter color sorting 450nm UV blocking 420nm 3D scanning 1064nm bandpass filter gel imaging 590nm bandpass filter quartz substrate UV fused silica JGS1 HB600 940nm 930nm filter 910nm bandpass filter 900nm bandpass filter thin-film coatings spectroscopy filte 865nm bandpass filter 920nm OD 880nm machine vision filter NIR bandpass 820nm filter 795nm filter 845nm Bandpass Filter 670nm-filter biomedical-imaging thin-film-coating high-od-blocking 735nm-filter Bandpass-filters cwl‑tolerance‑filter industrial‑optical‑components optical‑interference‑filter 660nm‑filter band‑pass‑filter laser blocking 500nm filter broadband optics 620nm filter bandpass optics 1545nm filter VIS filters excimer laser quartz glass 248nm filter water quality spectrophotometry Total Nitrogen analysis 220nm filter absorption filter HWB720 ultraviolet ZWB1 870nm Bandpass Filter collimating lens wavelength shift PCR optical filters
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