SP825 Shortpass Filter | 400-810nm T>90%, OD6 Blocking

SP825 Shortpass Filter | 400-810nm T>90%, OD6 Blocking

The SP825 premium shortpass filter delivers sharp spectral cut-off at 825nm, designed for high-precision optical systems requiring strict near-infrared isolation. Engineered with advanced hard dielectric optical coatings, it features high average transmission (Tave > 90%) across the 400-810nm visible-to-NIR spectrum while achieving exceptional optical density blocking (OD6) from 850nm to 1200nm. This filter effectively eliminates deep NIR noise, optimizing signal-to-noise ratios in sensitive imaging and detection setups.

Technical Specifications

Primary Applications

Due to its high transmission efficiency and deep background suppression, the SP825 shortpass filter is widely integrated into industrial and biomedical optical instrumentation:

• NIR Sensing & Vision Systems: Isolates visible light and blocks active NIR illuminators or stray laser interference.

• Biomedical Imaging & Fluorescence Detection: Prevents NIR excitation wavelengths from blinding ultra-sensitive CCD/CMOS detectors.

• Infrared Thermometry & Laser Diagnostics: Filters out background thermal or laser noise to maintain precision calibration.

Customization & Engineering Support

Need modified dimensions or mounted optics for prototype integration? OPTOStokes provides tailored solutions, including custom optical filters cut into round, square, or custom shapes, along with pre-mounted anodized ring assemblies. We maintain an extensive in-stock selection for rapid prototyping, backed by reliable lead times and world-class quality assurance for OEM volume orders.

Optimize Your Optical System Today

Eliminate stray light issues and long lead times with verified optical components. Contact our engineering team at sales@optofilters.com for technical inquiries, custom coating specifications, or immediate price quotes.