The BP890-90nm-0.55mm bandpass filter is designed for maximum signal collection and compactness in the near-infrared and infrared range. Centered at 890nm with a remarkably wide 90nm full width at half maximum (FWHM), this filter offers transmission greater than 90% from 855-935nm and blocks 400-1100nm at transmission less than 1%. Its ultra-thin 0.55mm substrate is ideal for modern multi-filter wheels, handheld OEM devices, and lightweight NIR imaging systems.
Technical Specifications
| Parameter | Specification |
|---|---|
| Center Wavelength (CWL) | 890nm ± 3nm at T greater than 90% |
| Transmission Range | 855-935nm at T greater than 90% |
| Full Width at Half Maximum (FWHM) | 90nm ± 5nm |
| Blocking Range | 400-1100nm at T less than 1% |
| Substrate Thickness | 0.55mm |
| Surface Quality | 60/40 scratch-dig per MIL-PRF-13830B |
| Coating Type | Hard ion-assisted deposition |
| Reference | 20211940 |
Key Performance Features
This NIR filter excels at collecting broad emission and enhancing SNR in challenging detection environments. The ultra-wide 90nm bandwidth maximizes signal from broad-spectrum NIR/LEDs and multipeak light sources. The 0.55mm thickness is one of the thinnest on the market, ideal for compact filter wheels, stacked OEM assemblies, and any space-limited system design. The filter delivers stable optical performance, low background, and robust environmental resistance for field, clinical, or lab applications.
Applications
- High-throughput NIR/IR fluorescence imaging: Medical and scientific platforms where signal collection is critical. - Broad-spectrum LED detection: Perfect for photodiode, CCD, or CMOS sensor integration. - Compact OEM instrumentation: Modular analyzers, hand-held meters, smart diagnostic devices. - Laser and IR communication: Reliable passband for pulse or continuous sources in telecom/defense.
Customization & Service
OPTOStokes offers diameter/shape customizations, alternative bandwidth tuning, large-scale OEM supply, and full certified QC to ISO 9001:2015. Rapid-ship available on standard cuts and support for unique integration needs—contact us at sales@optofilters.com or visit www.optofilters.com for RFQs and engineering help.
Pain Points & CTA
Need more signal with less bulk? Can’t fit standard filters in your compact NIR modules? BP890-90nm-0.55mm boosts throughput for today’s smallest devices. For design support, sample requests, or fast quotation, reach out to our technical team at your convenience.
