SP900 Shortpass Optical Filter | 430-885nm High Transmission

SP900 Shortpass Optical Filter | 430-885nm High Transmission

The OPTOStokes SP900 Shortpass Filter delivers sharp spectral cut-offs for demanding optical diagnostics and illumination systems requiring high visible transmission and deep near-infrared rejection. Providing over 85% average transmission across the 430-885nm spectral band, this optical edge filter effectively suppresses unwanted thermal infrared radiation and laser background noise from 910-1200nm with optical density exceeding OD5 at 0 degree angle of incidence (AOI). Engineered with hard dielectric sputtered coatings, it ensures superior environmental stability and minimal optical distortion for precision photonics applications.

Technical Specifications

Key Applications

Engineered for high-contrast optical separation, the SP900 shortpass filter provides exceptional NIR attenuation across critical optoelectronic platforms:

• Optical Diagnostic Modules: Eliminates sample thermal radiation noise greater than 900nm in biomedical analyzers, enhancing signal-to-noise ratios in weak luminescence measurements.

• CCD and CMOS Imaging Systems: Rejects near-infrared stray light to restore natural color fidelity in scientific cameras paired with a high-resolution optical lens assembly.

• Fluorescence Spectroscopy: Isolates visible excitation wavelengths while blocking longer NIR emissions within customized analytical optical filters setups.

Customization & Manufacturing Capabilities

OPTOStokes supports seamless integration into proprietary instrument geometries. Beyond off-the-shelf standard sizes, we manufacture custom circular discs, rectangular plates, and complex edge-machined substrates with optional anodized metal mounting rings. Powered by advanced thin-film deposition and rigorous spectrophotometric testing, OPTOStokes delivers world-class components with short lead times and stock selection.

Technical Support & Direct Inquiries

Experiencing signal interference from infrared heat sources or tight housing constraints? Our technical application engineers are ready to evaluate your system optical path and provide tailored recommendations. Contact our team directly at sales@optofilters.com or request a quote online for a response within 24 hours.