OPTOStokes is the optical filter brand at Optofilters.com, supplying stock and custom-coated filters for UV, VIS, NIR and IR applications.
Use this page to compare narrow passbands by center wavelength, FWHM, blocking level, and thickness. These filters are intended for applications where spectral selectivity matters more than broad throughput.
Select the center wavelength around the source or target signal, then choose the narrowest FWHM that still allows enough usable signal. Confirm OD blocking, peak transmission, AOI sensitivity, temperature range, and physical tolerance.
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.
View full Ultra-Narrow Bandpass Filters
| Model | CWL (nm) | Transmittance | FWHM (nm) | Optical Density | Note |
|---|---|---|---|---|---|
| STO-405-20Legacy: STO-405-20Legacy: STO-BP405/20 | 405 ± 3 | T>86% | 20 ± 3 | ODavg > 6 at 350-800 nm (out-of-band; passband excluded where applicable); OD > 3 at 800-1050 nm (out-of-band; passband excluded where applicable) | Other parameters can be customized |
| STO-BP450/20 | 450 ± 3 | T≥90% | 20 ± 5 | OD ≥ 3 at 350-1100 nm | Other parameters can be customized |
| STO-460-20Legacy: STO-460-20Legacy: STO-BP460/20 | 460 ± 3 | T>91% | 20 ± 3 | ODavg > 6 at 350-800 nm (out-of-band; passband excluded where applicable); OD > 3 at 800-1050 nm (out-of-band; passband excluded where applicable) | Other parameters can be customized |
| STO-BP470/20 | 470 ± 3 | T≥90% | 20 ± 5 | OD ≥ 3 at 350-1100 nm | Other parameters can be customized |
| STO-BP490/20 | 490 ± 3 | T≥90% | 20 ± 5 | OD ≥ 3 at 350-1100 nm | Other parameters can be customized |
| STO-520-20Legacy: STO-520-20Legacy: STO-BP520/20 | 520 ± 3 | T>91% | 20 ± 3 | ODavg > 6 at 350-800 nm (out-of-band; passband excluded where applicable); OD > 3 at 800-1050 nm (out-of-band; passband excluded where applicable) | Other parameters can be customized |
| STO-BP532/20 | 532 ± 3 | T≥90% | 20 ± 5 | OD ≥ 3 at 350-1100 nm | Other parameters can be customized |
| STO-540-20Legacy: STO-540-20Legacy: STO-BP540/20 | 540 ± 3 | T>91% | 20 ± 3 | ODavg > 6 at 350-800 nm (out-of-band; passband excluded where applicable); OD > 3 at 800-1050 nm (out-of-band; passband excluded where applicable) | Other parameters can be customized |
| STO-BP550/20 | 550 ± 3 | T≥90% | 20 ± 5 | OD ≥ 3 at 350-1100 nm | Other parameters can be customized |
| STO-BP565/20 | 565 ± 3 | T≥90% | 20 ± 5 | OD ≥ 3 at 350-1100 nm | Other parameters can be customized |
| STO-BP590/20 | 590 ± 3 | T≥90% | 20 ± 5 | OD ≥ 3 at 350-1100 nm | Other parameters can be customized |
| STO-BP635/20 | 635 ± 3 | T≥90% | 20 ± 5 | OD ≥ 3 at 350-1100 nm | Other parameters can be customized |
| STO-BP650/20 | 650 ± 3 | T≥90% | 20 ± 5 | OD ≥ 3 at 350-1100 nm | Other parameters can be customized |
| STO-680-20Legacy: STO-680-20Legacy: STO-BP680/20 | 680 ± 3 | T>91% | 20 ± 3 | ODavg > 6 at 350-800 nm (out-of-band; passband excluded where applicable); OD > 3 at 800-1050 nm (out-of-band; passband excluded where applicable) | Other parameters can be customized |
| STO-BP710/20 | 720 ± 3 | T≥90% | 20 ± 5 | OD ≥ 3 at 350-1100 nm | Other parameters can be customized |
| STO-BP750/20 | 750 ± 3 | T≥90% | 20 ± 5 | OD ≥ 3 at 350-1100 nm | Other parameters can be customized |
| STO-780-20Legacy: STO-780-20Legacy: STO-BP780/20 | 780 ± 3 | T>91% | 20 ± 3 | ODavg > 6 at 350-800 nm (out-of-band; passband excluded where applicable); OD > 3 at 800-1050 nm (out-of-band; passband excluded where applicable) | Other parameters can be customized |
| STO-800-20Legacy: STO-800-20Legacy: STO-BP800/20 | 800 ± 3 | T>91% | 20 ± 3 | ODavg > 6 at 350-800 nm (out-of-band; passband excluded where applicable); OD > 3 at 800-1050 nm (out-of-band; passband excluded where applicable) | Other parameters can be customized |
| STO-BP808/20 | 808 ± 3 | T≥90% | 20 ± 5 | OD ≥ 3 at 350-1100 nm | Other parameters can be customized |
| STO-820-20Legacy: STO-820-20Legacy: STO-BP820/20 | 820 ± 3 | T>91% | 20 ± 3 | ODavg > 6 at 350-800 nm (out-of-band; passband excluded where applicable); OD > 3 at 800-1050 nm (out-of-band; passband excluded where applicable) | Other parameters can be customized |
| STO-BP850/20 | 850 ± 3 | T≥90% | 20 ± 5 | OD ≥ 3 at 350-1100 nm | Other parameters can be customized |
| STO-BP880/20 | 880 ± 3 | T≥90% | 20 ± 5 | OD ≥ 3 at 350-1100 nm | Other parameters can be customized |
| STO-BP940/20 | 940 ± 3 | T≥90% | 20 ± 5 | OD ≥ 3 at 350-1100 nm | Other parameters can be customized |
| STO-BP365/30 | 365 ± 3 | T≥90% | 30 ± 5 | OD ≥ 3 at 200-800 nm | Other parameters can be customized |
| STO-BP405/40 | 405 ± 4 | T≥90% | 40 ± 5 | OD ≥ 3 at 350-1100 nm | Other parameters can be customized |
| STO-BP450/50 | 450 ± 5 | T≥90% | 50 ± 5 | OD ≥ 3 at 350-1100 nm | Other parameters can be customized |
| STO-BP462/60 | 462 ± 5 | T≥90% | 60 ± 5 | OD ≥ 3 at 350-1100 nm | Other parameters can be customized |
| STO-470-40Legacy: STO-BP470/40 | 470 ± 3 | T>91% | 40 ± 3 | ODavg > 6 at 350-800 nm (out-of-band; passband excluded where applicable); OD > 3 at 800-1050 nm (out-of-band; passband excluded where applicable) | Other parameters can be customized |
| STO-BP490/40 | 490 ± 4 | T≥90% | 40 ± 5 | OD ≥ 3 at 350-1100 nm | Other parameters can be customized |
| STO-520-40Legacy: STO-BP520/40 | 520 ± 3 | T>91% | 40 ± 3 | ODavg > 6 at 350-800 nm (out-of-band; passband excluded where applicable); OD > 3 at 800-1050 nm (out-of-band; passband excluded where applicable) | Other parameters can be customized |
| STO-532-40Legacy: STO-BP532/40 | 532 ± 3 | T>91% | 40 ± 3 | ODavg > 6 at 350-800 nm (out-of-band; passband excluded where applicable); OD > 3 at 800-1050 nm (out-of-band; passband excluded where applicable) | Other parameters can be customized |
| STO-BP540/40 | 540 ± 4 | T≥90% | 40 ± 5 | OD ≥ 3 at 350-1100 nm | Other parameters can be customized |
| STO-BP550/50 | 550 ± 5 | T≥90% | 50 ± 5 | OD ≥ 3 at 350-1100 nm | Other parameters can be customized |
| STO-565-40Legacy: STO-BP565/40 | 565 ± 3 | T>91% | 40 ± 3 | ODavg > 6 at 350-800 nm (out-of-band; passband excluded where applicable); OD > 3 at 800-1050 nm (out-of-band; passband excluded where applicable) | Other parameters can be customized |
| STO-BP590/40 | 590 ± 4 | T≥90% | 40 ± 5 | OD ≥ 3 at 350-1100 nm | Other parameters can be customized |
| STO-BP635/50 | 635 ± 5 | T≥90% | 50 ± 5 | OD ≥ 3 at 350-1100 nm | Other parameters can be customized |
| STO-BP650/50 | 650 ± 5 | T≥90% | 50 ± 5 | OD ≥ 3 at 350-1100 nm | Other parameters can be customized |
| STO-BP680/40 | 680 ± 4 | T≥90% | 40 ± 5 | OD ≥ 3 at 350-1100 nm | Other parameters can be customized |
| STO-BP780/40 | 780 ± 4 | T≥90% | 40 ± 5 | OD ≥ 3 at 350-1100 nm | Other parameters can be customized |
| STO-BP808/40 | 808 ± 4 | T≥90% | 40 ± 5 | OD ≥ 3 at 350-1100 nm | Other parameters can be customized |
| STO-BP850/50 | 850 ± 5 | T≥90% | 50 ± 5 | OD ≥ 3 at 350-1100 nm | Other parameters can be customized |
| STO-BP940/50 | 940 ± 5 | T≥90% | 50 ± 5 | OD ≥ 3 at 350-1100 nm | Other parameters can be customized |
The 2026 engineering dataset contributes 50 narrow bandpass models. Rows are grouped by FWHM and sorted by CWL; use the engineering filters for a quick shortlist, then open View specifications to review mechanical options.
CWL, FWHM, blocking, mounting and size values follow the 2026 source revision. Confirm the final coating curve and mechanical drawing for production use.
| Model | Spectral Range | CWL (nm) | FWHM (nm) | Transmittance (T) | Blocking Summary | Formats | Application Coverage |
|---|---|---|---|---|---|---|---|
| STO-402-20 | Visible | 402 ± 3 | 20 ± 3 | T>86% | ODavg > 6 at 350-800 nm (out-of-band; passband excluded where applicable); OD > 3 at 800-1050 nm (out-of-band; passband excluded where applicable) | 6 shared mechanical formats2 mounted; 4 mounting not specifiedMaximum available size: 57 × 57 mmView specifications | General catalog |
| STO-405-20Legacy: STO-BP405/20 | Visible | 405 ± 3 | 20 ± 3 | T>86% | ODavg > 6 at 350-800 nm (out-of-band; passband excluded where applicable); OD > 3 at 800-1050 nm (out-of-band; passband excluded where applicable) | 6 shared mechanical formats2 mounted; 4 mounting not specifiedMaximum available size: 57 × 57 mmView specifications | General catalog |
| STO-415-8 | Visible | 415 ± 3 | 8 ± 3 | T>86% | ODavg > 6 at 350-1100 nm (out-of-band; passband excluded where applicable) | 6 shared mechanical formats2 mounted; 4 mounting not specifiedMaximum available size: 57 × 57 mmView specifications | General catalog |
| STO-420-20 | Visible | 420 ± 3 | 20 ± 3 | T>91% | ODavg > 6 at 350-800 nm (out-of-band; passband excluded where applicable); OD > 3 at 800-1050 nm (out-of-band; passband excluded where applicable) | 6 shared mechanical formats2 mounted; 4 mounting not specifiedMaximum available size: 57 × 57 mmView specifications | General catalog |
| STO-432-8 | Visible | 432 ± 3 | 8 ± 3 | T>86% | ODavg > 6 at 350-1100 nm (out-of-band; passband excluded where applicable) | 6 shared mechanical formats2 mounted; 4 mounting not specifiedMaximum available size: 57 × 57 mmView specifications | General catalog |
| STO-435-8 | Visible | 435 ± 3 | 8 ± 3 | T>86% | ODavg > 6 at 350-1100 nm (out-of-band; passband excluded where applicable) | 6 shared mechanical formats2 mounted; 4 mounting not specifiedMaximum available size: 57 × 57 mmView specifications | General catalog |
| STO-440-20 | Visible | 440 ± 3 | 20 ± 3 | T>91% | ODavg > 6 at 350-800 nm (out-of-band; passband excluded where applicable); OD > 3 at 800-1050 nm (out-of-band; passband excluded where applicable) | 6 shared mechanical formats2 mounted; 4 mounting not specifiedMaximum available size: 57 × 57 mmView specifications | General catalog |
| STO-460-20Legacy: STO-BP460/20 | Visible | 460 ± 3 | 20 ± 3 | T>91% | ODavg > 6 at 350-800 nm (out-of-band; passband excluded where applicable); OD > 3 at 800-1050 nm (out-of-band; passband excluded where applicable) | 6 shared mechanical formats2 mounted; 4 mounting not specifiedMaximum available size: 57 × 57 mmView specifications | General catalog |
| STO-480-20 | Visible | 480 ± 3 | 20 ± 3 | T>91% | ODavg > 6 at 350-800 nm (out-of-band; passband excluded where applicable); OD > 3 at 800-1050 nm (out-of-band; passband excluded where applicable) | 6 shared mechanical formats2 mounted; 4 mounting not specifiedMaximum available size: 57 × 57 mmView specifications | General catalog |
| STO-485-20 | Visible | 485 ± 3 | 20 ± 3 | T>91% | ODavg > 6 at 350-800 nm (out-of-band; passband excluded where applicable); OD > 3 at 800-1050 nm (out-of-band; passband excluded where applicable) | 6 shared mechanical formats2 mounted; 4 mounting not specifiedMaximum available size: 57 × 57 mmView specifications | Fluorescence microscopy |
| STO-488-10Legacy: STO-BP488/10 | Visible | 488 ± 3 | 10 ± 3 | T>91% | ODavg > 6 at 350-800 nm (out-of-band; passband excluded where applicable); OD > 3 at 800-1050 nm (out-of-band; passband excluded where applicable) | 6 shared mechanical formats2 mounted; 4 mounting not specifiedMaximum available size: 57 × 57 mmView specifications | General catalog |
| STO-488-20 | Visible | 488 ± 3 | 20 ± 3 | T>91% | ODavg > 6 at 350-800 nm (out-of-band; passband excluded where applicable); OD > 3 at 800-1050 nm (out-of-band; passband excluded where applicable) | 6 shared mechanical formats2 mounted; 4 mounting not specifiedMaximum available size: 57 × 57 mmView specifications | General catalog |
| STO-492-8 | Visible | 492 ± 3 | 8 ± 3 | T>91% | ODavg > 6 at 350-800 nm (out-of-band; passband excluded where applicable); OD > 3 at 800-1050 nm (out-of-band; passband excluded where applicable) | 6 shared mechanical formats2 mounted; 4 mounting not specifiedMaximum available size: 57 × 57 mmView specifications | General catalog |
| STO-500-8 | Visible | 500 ± 3 | 8 ± 3 | T>86% | ODavg > 6 at 350-1100 nm (out-of-band; passband excluded where applicable) | 6 shared mechanical formats2 mounted; 4 mounting not specifiedMaximum available size: 57 × 57 mmView specifications | General catalog |
| STO-500-20 | Visible | 500 ± 3 | 20 ± 3 | T>91% | ODavg > 6 at 350-800 nm (out-of-band; passband excluded where applicable); OD > 3 at 800-1050 nm (out-of-band; passband excluded where applicable) | 6 shared mechanical formats2 mounted; 4 mounting not specifiedMaximum available size: 57 × 57 mmView specifications | General catalog |
| STO-505-8 | Visible | 505 ± 3 | 8 ± 3 | T>86% | ODavg > 6 at 350-1100 nm (out-of-band; passband excluded where applicable) | 6 shared mechanical formats2 mounted; 4 mounting not specifiedMaximum available size: 57 × 57 mmView specifications | General catalog |
| STO-520-20Legacy: STO-BP520/20 | Visible | 520 ± 3 | 20 ± 3 | T>91% | ODavg > 6 at 350-800 nm (out-of-band; passband excluded where applicable); OD > 3 at 800-1050 nm (out-of-band; passband excluded where applicable) | 6 shared mechanical formats2 mounted; 4 mounting not specifiedMaximum available size: 57 × 57 mmView specifications | General catalog |
| STO-525-20Legacy: STO-BP525/20 | Visible | 525 ± 3 | 20 ± 3 | T>91% | ODavg > 6 at 350-800 nm (out-of-band; passband excluded where applicable); OD > 3 at 800-1050 nm (out-of-band; passband excluded where applicable) | 6 shared mechanical formats2 mounted; 4 mounting not specifiedMaximum available size: 57 × 57 mmView specifications | General catalog |
| STO-530-20Legacy: STO-BP530/20 | Visible | 530 ± 3 | 20 ± 3 | T>91% | ODavg > 6 at 350-800 nm (out-of-band; passband excluded where applicable); OD > 3 at 800-1050 nm (out-of-band; passband excluded where applicable) | 6 shared mechanical formats2 mounted; 4 mounting not specifiedMaximum available size: 57 × 57 mmView specifications | General catalog |
| STO-540-20Legacy: STO-BP540/20 | Visible | 540 ± 3 | 20 ± 3 | T>91% | ODavg > 6 at 350-800 nm (out-of-band; passband excluded where applicable); OD > 3 at 800-1050 nm (out-of-band; passband excluded where applicable) | 6 shared mechanical formats2 mounted; 4 mounting not specifiedMaximum available size: 57 × 57 mmView specifications | General catalog |
| STO-543-20 | Visible | 543 ± 3 | 20 ± 3 | T>91% | ODavg > 6 at 350-800 nm (out-of-band; passband excluded where applicable); OD > 3 at 800-1050 nm (out-of-band; passband excluded where applicable) | 6 shared mechanical formats2 mounted; 4 mounting not specifiedMaximum available size: 57 × 57 mmView specifications | qPCR |
| STO-560-20Legacy: STO-BP560/20 | Visible | 560 ± 3 | 20 ± 3 | T>91% | ODavg > 6 at 350-800 nm (out-of-band; passband excluded where applicable); OD > 3 at 800-1050 nm (out-of-band; passband excluded where applicable) | 6 shared mechanical formats2 mounted; 4 mounting not specifiedMaximum available size: 57 × 57 mmView specifications | General catalog |
| STO-570-20Legacy: STO-BP570/20 | Visible | 570 ± 3 | 20 ± 3 | T>91% | ODavg > 6 at 350-800 nm (out-of-band; passband excluded where applicable); OD > 3 at 800-1050 nm (out-of-band; passband excluded where applicable) | 6 shared mechanical formats2 mounted; 4 mounting not specifiedMaximum available size: 57 × 57 mmView specifications | General catalog |
| STO-580-20 | Visible | 580 ± 3 | 20 ± 3 | T>91% | ODavg > 6 at 350-800 nm (out-of-band; passband excluded where applicable); OD > 3 at 800-1050 nm (out-of-band; passband excluded where applicable) | 6 shared mechanical formats2 mounted; 4 mounting not specifiedMaximum available size: 57 × 57 mmView specifications | General catalog |
| STO-585-20 | Visible | 585 ± 3 | 20 ± 3 | T>91% | ODavg > 6 at 350-800 nm (out-of-band; passband excluded where applicable); OD > 3 at 800-1050 nm (out-of-band; passband excluded where applicable) | 6 shared mechanical formats2 mounted; 4 mounting not specifiedMaximum available size: 57 × 57 mmView specifications | qPCR |
| STO-600-8 | Visible | 600 ± 3 | 8 ± 3 | T>86% | ODavg > 6 at 350-1100 nm (out-of-band; passband excluded where applicable) | 6 shared mechanical formats2 mounted; 4 mounting not specifiedMaximum available size: 57 × 57 mmView specifications | General catalog |
| STO-600-20 | Visible | 600 ± 3 | 20 ± 3 | T>91% | ODavg > 6 at 350-800 nm (out-of-band; passband excluded where applicable); OD > 3 at 800-1050 nm (out-of-band; passband excluded where applicable) | 6 shared mechanical formats2 mounted; 4 mounting not specifiedMaximum available size: 57 × 57 mmView specifications | General catalog |
| STO-605-20Legacy: STO-BP605/20 | Visible | 605 ± 3 | 20 ± 3 | T>91% | ODavg > 6 at 350-800 nm (out-of-band; passband excluded where applicable); OD > 3 at 800-1050 nm (out-of-band; passband excluded where applicable) | 6 shared mechanical formats2 mounted; 4 mounting not specifiedMaximum available size: 57 × 57 mmView specifications | General catalog |
| STO-610-20 | Visible | 610 ± 3 | 20 ± 3 | T>91% | ODavg > 6 at 350-800 nm (out-of-band; passband excluded where applicable); OD > 3 at 800-1050 nm (out-of-band; passband excluded where applicable) | 6 shared mechanical formats2 mounted; 4 mounting not specifiedMaximum available size: 57 × 57 mmView specifications | General catalog |
| STO-612-20Legacy: STO-BP612/20 | Visible | 612 ± 3 | 20 ± 3 | T>91% | ODavg > 6 at 350-800 nm (out-of-band; passband excluded where applicable); OD > 3 at 800-1050 nm (out-of-band; passband excluded where applicable) | 6 shared mechanical formats2 mounted; 4 mounting not specifiedMaximum available size: 57 × 57 mmView specifications | General catalog |
| STO-620-20 | Visible | 620 ± 3 | 20 ± 3 | T>91% | ODavg > 6 at 350-800 nm (out-of-band; passband excluded where applicable); OD > 3 at 800-1050 nm (out-of-band; passband excluded where applicable) | 6 shared mechanical formats2 mounted; 4 mounting not specifiedMaximum available size: 57 × 57 mmView specifications | qPCR |
| STO-630-20Legacy: STO-BP630/20 | Visible | 630 ± 3 | 20 ± 3 | T>91% | ODavg > 6 at 350-800 nm (out-of-band; passband excluded where applicable); OD > 3 at 800-1050 nm (out-of-band; passband excluded where applicable) | 6 shared mechanical formats2 mounted; 4 mounting not specifiedMaximum available size: 57 × 57 mmView specifications | General catalog |
| STO-638-20 | Visible | 638 ± 3 | 20 ± 3 | T>91% | ODavg > 6 at 350-800 nm (out-of-band; passband excluded where applicable); OD > 3 at 800-1050 nm (out-of-band; passband excluded where applicable) | 6 shared mechanical formats2 mounted; 4 mounting not specifiedMaximum available size: 57 × 57 mmView specifications | General catalog |
| STO-640-20Legacy: STO-BP640/20 | Visible | 640 ± 3 | 20 ± 3 | T>91% | ODavg > 6 at 350-800 nm (out-of-band; passband excluded where applicable); OD > 3 at 800-1050 nm (out-of-band; passband excluded where applicable) | 6 shared mechanical formats2 mounted; 4 mounting not specifiedMaximum available size: 57 × 57 mmView specifications | General catalog |
| STO-655-20Legacy: STO-BP655/20 | Visible | 655 ± 3 | 20 ± 3 | T>91% | ODavg > 6 at 350-800 nm (out-of-band; passband excluded where applicable); OD > 3 at 800-1050 nm (out-of-band; passband excluded where applicable) | 6 shared mechanical formats2 mounted; 4 mounting not specifiedMaximum available size: 57 × 57 mmView specifications | General catalog |
| STO-660-20Legacy: STO-BP660/20 | Visible | 660 ± 3 | 20 ± 3 | T>91% | ODavg > 6 at 350-800 nm (out-of-band; passband excluded where applicable); OD > 3 at 800-1050 nm (out-of-band; passband excluded where applicable) | 6 shared mechanical formats2 mounted; 4 mounting not specifiedMaximum available size: 57 × 57 mmView specifications | General catalog |
| STO-665-20Legacy: STO-BP665/20 | Visible | 665 ± 3 | 20 ± 3 | T>91% | ODavg > 6 at 350-800 nm (out-of-band; passband excluded where applicable); OD > 3 at 800-1050 nm (out-of-band; passband excluded where applicable) | 6 shared mechanical formats2 mounted; 4 mounting not specifiedMaximum available size: 57 × 57 mmView specifications | General catalog |
| STO-670-8 | Visible | 670 ± 3 | 8 ± 3 | T>86% | ODavg > 6 at 350-1100 nm (out-of-band; passband excluded where applicable) | 6 shared mechanical formats2 mounted; 4 mounting not specifiedMaximum available size: 57 × 57 mmView specifications | General catalog |
| STO-670-20Legacy: STO-BP670/20 | Visible | 670 ± 3 | 20 ± 3 | T>91% | ODavg > 6 at 350-800 nm (out-of-band; passband excluded where applicable); OD > 3 at 800-1050 nm (out-of-band; passband excluded where applicable) | 6 shared mechanical formats2 mounted; 4 mounting not specifiedMaximum available size: 57 × 57 mmView specifications | General catalog |
| STO-675-20 | Visible | 675 ± 3 | 20 ± 3 | T>91% | ODavg > 6 at 350-800 nm (out-of-band; passband excluded where applicable); OD > 3 at 800-1050 nm (out-of-band; passband excluded where applicable) | 6 shared mechanical formats2 mounted; 4 mounting not specifiedMaximum available size: 57 × 57 mmView specifications | qPCR |
| STO-680-20Legacy: STO-BP680/20 | Visible | 680 ± 3 | 20 ± 3 | T>91% | ODavg > 6 at 350-800 nm (out-of-band; passband excluded where applicable); OD > 3 at 800-1050 nm (out-of-band; passband excluded where applicable) | 6 shared mechanical formats2 mounted; 4 mounting not specifiedMaximum available size: 57 × 57 mmView specifications | General catalog |
| STO-685-15 | Visible | 685 ± 3 | 15 ± 3 | T>91% | ODavg > 6 at 350-800 nm (out-of-band; passband excluded where applicable); OD > 3 at 800-1050 nm (out-of-band; passband excluded where applicable) | 6 shared mechanical formats2 mounted; 4 mounting not specifiedMaximum available size: 57 × 57 mmView specifications | General catalog |
| STO-700-20Legacy: STO-BP700/20 | NIR | 700 ± 3 | 20 ± 3 | T>91% | ODavg > 6 at 350-800 nm (out-of-band; passband excluded where applicable); OD > 3 at 800-1050 nm (out-of-band; passband excluded where applicable) | 6 shared mechanical formats2 mounted; 4 mounting not specifiedMaximum available size: 57 × 57 mmView specifications | General catalog |
| STO-720-20 | NIR | 720 ± 3 | 20 ± 3 | T>91% | ODavg > 6 at 350-800 nm (out-of-band; passband excluded where applicable); OD > 3 at 800-1050 nm (out-of-band; passband excluded where applicable) | 6 shared mechanical formats2 mounted; 4 mounting not specifiedMaximum available size: 57 × 57 mmView specifications | General catalog |
| STO-740-20 | NIR | 740 ± 3 | 20 ± 3 | T>91% | ODavg > 6 at 350-800 nm (out-of-band; passband excluded where applicable); OD > 3 at 800-1050 nm (out-of-band; passband excluded where applicable) | 6 shared mechanical formats2 mounted; 4 mounting not specifiedMaximum available size: 57 × 57 mmView specifications | General catalog |
| STO-760-20Legacy: STO-BP760/20 | NIR | 760 ± 3 | 20 ± 3 | T>91% | ODavg > 6 at 350-800 nm (out-of-band; passband excluded where applicable); OD > 3 at 800-1050 nm (out-of-band; passband excluded where applicable) | 6 shared mechanical formats2 mounted; 4 mounting not specifiedMaximum available size: 57 × 57 mmView specifications | General catalog |
| STO-780-20Legacy: STO-BP780/20 | NIR | 780 ± 3 | 20 ± 3 | T>91% | ODavg > 6 at 350-800 nm (out-of-band; passband excluded where applicable); OD > 3 at 800-1050 nm (out-of-band; passband excluded where applicable) | 6 shared mechanical formats2 mounted; 4 mounting not specifiedMaximum available size: 57 × 57 mmView specifications | General catalog |
| STO-800-20Legacy: STO-BP800/20 | NIR | 800 ± 3 | 20 ± 3 | T>91% | ODavg > 6 at 350-800 nm (out-of-band; passband excluded where applicable); OD > 3 at 800-1050 nm (out-of-band; passband excluded where applicable) | 6 shared mechanical formats2 mounted; 4 mounting not specifiedMaximum available size: 57 × 57 mmView specifications | General catalog |
| STO-820-20Legacy: STO-BP820/20 | NIR | 820 ± 3 | 20 ± 3 | T>91% | ODavg > 6 at 350-800 nm (out-of-band; passband excluded where applicable); OD > 3 at 800-1050 nm (out-of-band; passband excluded where applicable) | 6 shared mechanical formats2 mounted; 4 mounting not specifiedMaximum available size: 57 × 57 mmView specifications | General catalog |
| STO-840-20Legacy: STO-BP840/20 | NIR | 840 ± 3 | 20 ± 3 | T>91% | ODavg > 6 at 350-800 nm (out-of-band; passband excluded where applicable); OD > 3 at 800-1050 nm (out-of-band; passband excluded where applicable) | 6 shared mechanical formats2 mounted; 4 mounting not specifiedMaximum available size: 57 × 57 mmView specifications | General catalog |
Mechanical variants are listed once here and shared by the model rows above. Select a model, review its optical performance, then choose a format before requesting a quote.
Used by 56 catalog model(s).
Used by 14 catalog model(s).
Used by 1 catalog model(s).
Used by 56 catalog model(s).
Used by 14 catalog model(s).
Used by 1 catalog model(s).
Used by 56 catalog model(s).
Used by 1 catalog model(s).
Used by 14 catalog model(s).
Used by 56 catalog model(s).
Used by 1 catalog model(s).
Used by 14 catalog model(s).
Used by 56 catalog model(s).
Used by 1 catalog model(s).
Used by 14 catalog model(s).
Used by 56 catalog model(s).
Used by 1 catalog model(s).
Used by 14 catalog model(s).
Narrower bandwidth improves wavelength discrimination, but it can reduce throughput. It is most useful for laser cleanup, spectral analysis, and tight emission lines.
For high-sensitivity detectors, OD outside the passband can matter as much as peak transmission. Confirm the blocking range, not just the center wavelength.
If a catalog wavelength is close but not exact, specify target CWL, tolerance, FWHM, blocking range, and working angle in the quote request.
Choose a narrow bandpass filter when nearby wavelengths must be rejected, such as laser cleanup, fluorescence detection, Raman, and high-sensitivity instruments.
Not always. Narrower filters improve selectivity but may reduce signal tolerance if the source drifts or the angle of incidence changes.
Yes. Custom CWL, FWHM, blocking range, size, and substrate options are available for OEM requirements.
Quality & Compliance
For OEM programs, laboratory instruments, and industrial systems, OPTOStokes keeps quality, material compliance, and engineering support visible from the start of supplier evaluation.
Process control, inspection records, and repeatable coating workflows for production optical components.
Compliance documentation can be prepared for qualified projects and regulated supply chains.
Wavelength, FWHM, substrate, AOI, size, and mounting requirements can be reviewed with engineering.
Share target wavelength, blocking level, transmittance, and drawing requirements for a focused quote.
Our engineers will help you select the perfect optical solution.
