405nm Narrowband Filter | 15nm FWHM | T<1% Blocking
This narrowband bandpass filter is precision-engineered to isolate the 405nm wavelength. It offers high transmission, greater than 80 percent, in the passband (400-410nm) and a tight 15nm FWHM. It is designed for applications requiring clear 405nm signal isolation, providing wideband blocking of less than 1 percent transmission from 350nm to 1100nm.
Technical Specifications
| Part Number (SKU) | 20209868 |
| Center Wavelength (CWL) | 405 ± 2 nm (at T > 85%) |
| Full Width at Half Maximum (FWHM) | 15 ± 2 nm |
| Transmission Band (T_avg) | 400-410 nm at T_avg > 80% |
| Blocking Band | 350-1100 nm at T_avg < 1% (OD > 2) |
| Thickness | 1.0 mm |
| Surface Quality | 60/40 (MIL-PRF-13830B) |
Typical Applications
The precise 15nm bandwidth makes this filter ideal for isolating 405nm diode laser lines, ensuring spectral purity in laser-based systems. It is highly effective for "laser cleanup" in applications such as 3D printing, photolithography, and Raman spectroscopy.
Furthermore, the 405nm wavelength is a standard excitation source in life sciences. This filter is widely used in fluorescence microscopy (e.g., for DAPI or Hoechst stains) and flow cytometry instrumentation to separate excitation light from the emission signal.
Customization and In-Stock Solutions
OPTOStokes supports your project from R&D prototyping to volume production. We maintain an inventory of standard filters, like P/N 20209868, for immediate shipment, minimizing your development downtime.
We also provide comprehensive custom solutions. Our engineering team can produce this filter in custom shapes (round, square, or complex geometries), sizes, or mounted in custom assemblies to meet your exact mechanical requirements. All components feature our world-class optical coating technology, ensuring precision, guaranteed quality, and reliable lead times for your production schedule.
Partner with OPTOStokes
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Avoid project delays from inconsistent suppliers or long lead times. Our manufacturing ensures high-quality, reliable components for both standard and custom specifications.
To discuss your technical requirements, request a custom modification, or confirm stock for P/N 20209868, please contact our engineering team directly.
Email us at sales@optofilters.com for a rapid technical consultation or quote.
