- Cart
- |
- Personal Center
- |


680 nm Bandpass Filter
The 680 nm bandpass filter is a high-performance narrow-band interference filter centered at 680 nm, offering high transmittance, broad blocking range, and excellent stray-light suppression. Manufactured with multi-layer dielectric hard-coating technology, it provides high transmission in the target band while delivering high optical density (OD) blocking in the ultraviolet, visible, and near-infrared regions. This product is widely used in fluorescence imaging, laser detection, flow cytometry, confocal microscopy, biomedical instrumentation, machine vision, and research optical systems.
Product features:Center wavelength approximately 680 nm;Average passband transmittance > 93%;High transmission efficiency for enhanced system signal strength;Multi‑zone high‑blocking design with maximum OD up to 8;High-stability dielectric hard coating;Long lifetime and excellent environmental stability
Part Number:MP-BPF-680
Application area:Fluorescence microscopy | Biomedical detection | Laser optical systems | Research and industrial inspection
Add to Cart Request for Quotation Consult Favorite
Laser Wavelength Transmission Band
680 nm Tavg > 93% 673.5 – 686.5 nm

Specification | Value |
Transmission Band | Tavg > 93% 673.5 – 686.5 nm |
Blocking Band | ODavg >5 300 - 656 nm |
Blocking Band | ODavg > 8 490 – 636 nm nm |
Blocking Band | OD > 3.5 661 nm |
Blocking Band | ODavg > 5 705 – 1050 nm |
FWHM Bandwidth | 19.5nm |
Guaranteed Minimum Bandwidth | 13 |
Angle of Incidence | 0 ± 5° |
Cone Half-angle | 7° |
Clear Aperture | ≥21mm |
Transverse Dimensions, Diameter | 25 mm |
Filter Thickness, Mounted | 5.0 mm |
Filter Thickness Tolerance, Mounted | ±0.1mm |
Filter Thickness, Unmounted | 2.0 mm |
Filter Thickness Tolerance, Unmounted | ±0.1mm |
Surface Quality (Scratch-Dig) | 60-40 |
Filter Effective Index | 2.04 |
Optical Damage Rating | Testing has proven to show no signs of degradation when exposed to at least 6.0 W of power from an unfiltered xenon arc lamp over a 25 mm diameter (corresponding to 1.2 W/cm2) for over 500 hrs. |
Orientation | Arrow on ring is preferred direction of propagation of light |
Spectral Characteristic Curves
Transmittance-Wavelength Spectrum
Optical Density Spectrum

--
Request for Quotation
We will reply to all your information about the product in time.
⇪