Products Description
845nm NIR Bandpass Filter | 40nm FWHM, OD>6 Deep Blocking
OPTOStokes 845nm NIR bandpass filter is precision engineered for near-infrared optical systems requiring strict spectral control and reliable performance. As part of our premium bandpass filters portfolio, this component delivers exceptional transmission across the 830–860nm wavelength range while providing deep out-of-band blocking to suppress unwanted stray light. Our advanced thin film coating technology ensures consistent spectral response, high environmental stability, and long service life for demanding industrial and scientific applications.
Technical Specifications
| Parameter | Specification |
|---|---|
| Center Wavelength (CWL) | 845 ± 2 nm |
| Full Width at Half Maximum (FWHM) | 40 ± 3 nm |
| Transmission Band | 830 – 860 nm |
| Average Peak Transmission | Greater than 95% |
| Blocking Range | 400 – 815 nm & 875 – 1100 nm |
| Average Blocking Optical Density | Greater than OD 6 |
| Angle of Incidence (AOI) | 0 degrees |

Typical Applications
This 845nm bandpass filter is optimized for a wide range of near-infrared optical systems, including but not limited to:
Machine vision and industrial inspection systems
NIR biomedical imaging and small animal in-vivo imaging
Laser alignment and near-infrared laser systems
Analytical instruments and spectral detection equipment
Optical sensing and precision measurement setups
Customization & Service
OPTOStokes provides full customization support to match your exact system integration requirements. We can fabricate this filter in circular, square, and custom irregular shapes, with optional mounting rings for simplified assembly into optical housings.
We maintain an extensive in-stock selection of standard NIR filters for fast turnaround, while our in-house coating team can adjust spectral parameters, substrate materials, and dimensions to address unique project needs. All products undergo strict quality inspection to ensure world-class precision and consistent batch-to-batch performance, with reliable lead times you can plan around.
Technical Support & Ordering
Optical engineering and procurement teams often face persistent challenges: long lead times for custom optics, limited technical guidance during system integration, and inconsistent coating quality across production runs. These issues can delay project timelines and increase overall costs.
At OPTOStokes, we address these pain points through a combination of ready-to-ship inventory, expert technical consultation, and rigorous quality control. Our optical engineers can review your system requirements and recommend the optimal filter configuration to maximize performance in your specific application.
To request a full datasheet, custom pricing, or technical support, contact our team at sales@optofilters.com or submit an inquiry directly through our website. We respond promptly to all requests and provide clear, upfront lead time estimates for every order.
Tags: Machine Vision NIR Filters Thin Film Coating Optical Density 845nm Bandpass Filter