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OPTOStokes PCR filters are designed for real-time fluorescence quantitative PCR instruments including Bio-Rad CFX, Applied Biosystems QuantStudio, and Roche LightCycler. These filters provide high transmittance at target wavelengths with deep out-of-band blocking for accurate fluorescence detection in multi-channel PCR systems. Use the fluorophore-to-filter mapping table below to quickly identify the right filters for FAM, HEX, CY5, ROX, and more.

• BP543/20
• BP565/20
• BP585/20
• DM565
• DM647

View all in Fluorescent PCR Filters

OPTOStokes fluorescence microscope filter sets are designed for common fluorophores used in widefield and confocal microscopy including DAPI, FITC/EGFP, TRITC/PE, and CY5. Each filter set includes a matched excitation filter, emission filter, and dichroic mirror for optimal fluorescence imaging. Browse the pre-configured filter sets below or mix individual filters for custom configurations.

• BP375/28 — CWL 375nm, FWHM 28nm, T_ave≥90%
• BP470/40 — CWL 470nm, FWHM 40nm, T_ave≥90%
• BP535/40 — CWL 535nm, FWHM 40nm, T_ave≥90%

View all in Fluorescence Microscope Filters

OPTOStokes biochemical analysis filters support ELISA readers, microplate detection, POCT fluorescence modules, PCR optics, and flow cytometry channels where OD6 blocking and controlled fluorescence passbands are required.

• STO-NBP365/10N — CWL 365nm, FWHM 10nm, OD6
• STO-BP470/30N — CWL 470nm, FWHM 30nm, OD6
• STO-BP523/25N — CWL 523nm, FWHM 25nm, OD6
• STO-BP635/20N — CWL 635nm, FWHM 20nm, OD6

View all in Biochemical Analysis & Flow Cytometry Filters

The primary wavelengths for LiDAR are 905nm and 1550nm, with 850nm and 940nm also used in select applications. OPTOStokes LiDAR bandpass filters provide high transmittance and deep out-of-band blocking for reliable distance measurement in autonomous vehicles, UAV navigation, and 3D mapping systems. Hard-coated filters in this section are intended to maintain stable performance across wide operating temperature ranges.

• STO-BP905/10 — CWL 905nm, FWHM 10nm, T≥90%
• STO-BP940/10 — CWL 940nm, FWHM 10nm, T≥90%
• STO-BP1550/10 — CWL 1550nm, FWHM 10nm, T≥90%

View all in LiDAR Application Filters

OPTOStokes laser filters are designed for industrial laser marking (808nm), Nd:YAG laser cutting (1064nm), laser welding, and laser protection applications. These filters provide precise wavelength selection and high laser damage threshold for reliable operation in demanding production environments.

• SO-BP520 — CWL 520nm, FWHM 30-60nm
• SO-BP808 — CWL 808nm, FWHM 30-60nm
• SO-BP1064 — CWL 1064nm, FWHM 30-60nm

View all in Laser Application Filters

OPTOStokes machine vision filters enhance imaging performance for industrial inspection, quality control, barcode scanning, and robotic vision applications. IR cut filters and bandpass filters in this section improve contrast, reduce glare, and enable precise color or wavelength-specific detection for Basler, FLIR, and other industrial camera systems.

• STO-IR650 — Cut-off 650nm, T 410-630nm
• STO-IR720 — Cut-off 720nm, T 410-700nm
• STO-IR800 — Cut-off 800nm, T 410-780nm

View all in Machine Vision Filters

These narrow bandpass filters (CWL 405-808nm) provide precise wavelength selection with FWHM as narrow as 1nm and OD6+ out-of-band blocking. They are suited to Raman spectroscopy, laser clean-up, confocal microscopy, and high-sensitivity fluorescence detection where wavelength purity is critical.

• STO-BP405/20 — CWL 405nm, FWHM 20nm, T≥90%
• STO-BP532/20 — CWL 532nm, FWHM 20nm, T≥90%
• STO-BP635/20 — CWL 635nm, FWHM 20nm, T≥90%
• STO-BP808/20 — CWL 808nm, FWHM 20nm, T≥90%

View all in Narrow Bandpass Filters

OPTOStokes standard bandpass filters cover UV (350nm), visible (400-700nm), and NIR (700-1100nm) wavelengths with FWHM from 10-100nm and OD3+ blocking. These filters are suited to general-purpose imaging, photometry, colorimetry, and spectroscopy applications and are available in multiple standard sizes for quick delivery.

• STO-BP340 — CWL 340nm, FWHM 10-20nm
• STO-BP405 — CWL 405nm, FWHM 10-20nm
• STO-BP532 — CWL 532nm, FWHM 10-20nm
• STO-BP850 — CWL 850nm, FWHM 10-20nm

View all in Standard Bandpass Filters

OPTOStokes longpass and shortpass filters provide sharp edge transitions for wavelength separation in fluorescence microscopy, Raman spectroscopy, and optical instrumentation. Longpass filters transmit wavelengths longer than the cut-on while blocking shorter wavelengths; shortpass filters do the reverse. They combine well with bandpass filters when precise spectral selectivity is required.

• STO-LP400 — Cut-on 400nm, T 410-1100nm
• STO-LP550 — Cut-on 550nm, T 560-1100nm
• STO-LP850 — Cut-on 850nm, T 860-1100nm

View all in Longpass & Shortpass Filters

OPTOStokes offers a comprehensive range of optical mirrors including aluminum (visible), gold (IR), protected silver, and dielectric laser mirrors for wavelengths from 400nm to 10.6µm. These mirrors use hard dielectric coatings for high reflectivity (>99%) and laser damage resistance in Nd:YAG, CO2, and fiber laser systems.

• Protected aluminum mirrors — R≥95%, 400-700nm
• Protected gold mirrors — R≥98%, 700-1100nm
• Dielectric laser mirrors — R≥99.5%, Nd:YAG/CO₂

View all in Optical Mirrors

These dichroic mirrors (beamsplitters) are designed for a 45° angle of incidence and separate light by wavelength. They are suited to fluorescence microscopy, laser beam combining, multi-channel imaging, and projector applications. Longpass-type dichroics transmit longer wavelengths and reflect shorter ones.

• DM565
• DM647
• DM700

View all in Dichroic Mirrors

OPTOStokes acrylic and polycarbonate (PC) filters provide cost-effective solutions for IR pass, color separation, and decorative applications. The black IR acrylic in this section transmits NIR (800-1100nm) while blocking visible light and is suitable for IR remote controls, proximity sensors, and security camera windows.

• Black IR acrylic — transmits 800-1100nm, blocks visible
• IR-pass polycarbonate — for proximity sensors

View all in Acrylic Filters

OPTOStokes optical windows provide excellent transmittance across UV (200-400nm), visible (400-700nm), and IR (700-3000nm) spectra. Available materials include sapphire (high durability), K9/BK7 (visible), fused silica (UV), and calcium fluoride (IR), with uncoated, AR, or custom coating options. These windows are suitable for laser protection windows, detector covers, and optical chamber windows.

• Sapphire window — 350-3000nm, uncoated
• Quartz window — 250-2500nm, uncoated
• K9 AR-coated window — 400-700nm, double-side

View all in Optical Windows

These colored glass filters provide cost-effective wavelength selection using absorption-based filtering technology. They are suitable for photography, lighting filters, stage lighting, and general-purpose applications where precise thin-film coating is not required. HWB, ZWB, and QB series are available with various cut-on and cut-off wavelengths.

• HWB series — long-pass absorption glass
• QB series — band-pass absorption glass
• ZWB series — UV-pass absorption glass

View all in Colored Glass Filters

OPTOStokes trichroic filters separate incident light into three distinct wavelength bands (blue, green, red) at 45° AOI. These precision color separation filters are suited to DLP/LCD projectors, multi-spectral cameras, and advanced imaging systems requiring RGB channel separation.

• Trichroic beamsplitters — 45° AOI, splits R/G/B
• For DLP/LCD projectors and multispectral cameras

View all in Trichroic Filters

OPTOStokes precision optical lenses include plano-convex (laser focusing/collimation), biconvex (high NA imaging), biconcave (beam expansion), meniscus, and achromatic doublet lenses. Available materials include BK7, fused silica, and sapphire with focal lengths from 10mm to 1000mm.

• PCX-10.00 — f=10mm, ∅6mm
• PCX-23.60 — f=23.6mm, ∅12mm
• PCX-57.88 — f=57.9mm, ∅22mm

View all in Optical Lenses

OPTOStokes IR filters cover near-infrared (750-1100nm), short-wavelength infrared (SWIR 1.1-2.5µm), mid-wavelength infrared (MWIR 3-5µm), and long-wavelength infrared (LWIR 8-14µm) applications. The IR bandpass and longpass filters in this section serve thermal imaging cameras, IR spectroscopy, gas sensing, and IR communication systems.

• STO-BP1120 — CWL 1120nm, FWHM 10-20nm
• STO-BP1550 — CWL 1550nm, FWHM 10-20nm
• STO-BP2050 — CWL 2050nm, FWHM 10-20nm

View all in IR Filters

OPTOStokes produces notch filters (blocking a narrow wavelength band for Raman spectroscopy), linear polarizers (visible/NIR for polarization imaging), and fully custom-designed filters for unique research and OEM applications. Non-standard requirements can be discussed directly with the engineering and sales team responsible for custom optical filter design and manufacturing.

• Notch filters — Raman spectroscopy laser rejection
• Linear polarizers — visible and NIR ranges

View all in Specialty Filters