Products Description
BP865 Bandpass Filter | FWHM 30nm, NIR Infrared Camera Filter

The OPTOStokes BP865 bandpass filter is a precision optical filter designed for near-infrared imaging and sensing applications. Featuring a center wavelength of 865nm, a narrow 30nm FWHM bandwidth, and high average transmission above 90% within the passband, this filter provides reliable wavelength selection for infrared camera systems, machine vision, and optical detection equipment.
Engineered with advanced thin film coating technology, the BP865 provides efficient spectral isolation by transmitting the target NIR wavelength range while blocking unwanted light from 350nm to 1100nm with optical density greater than 2. It is suitable for engineers requiring stable spectral performance, repeatable production quality, and flexible customization options.
Technical Specifications of BP865 865nm Bandpass Filter
| Parameter | Specification |
|---|---|
| Product Model | BP865 |
| Filter Type | NIR Bandpass Filter |
| Center Wavelength (CWL) | 865±3nm @ T>90% |
| Transmission Range | 860-870nm @ Tave>90% |
| FWHM | 30±3nm |
| Blocking Range | 350-1100nm @ OD>2 |
| Application Region | Near Infrared (NIR) |
Applications
The BP865 865nm bandpass filter is commonly integrated into infrared camera and NIR imaging systems where precise wavelength selection is required. Typical applications include machine vision inspection, optical sensing, agricultural monitoring, security imaging, and industrial detection systems.
For imaging applications requiring enhanced signal-to-noise ratio, the filter can help suppress background radiation and isolate the desired infrared signal. OPTOStokes provides a wide selection of Bandpass Filters and NIR Bandpass Filters for different wavelength requirements.
Customization & Service
Beyond standard BP865 models, OPTOStokes supports customized optical filter solutions according to specific system requirements. Custom options include round, square, and irregular shapes, as well as mounted filter assemblies with retaining rings for easier optical integration.
With extensive in-stock filter selections, precise coating capability, and controlled production processes, OPTOStokes helps customers reduce development cycles while maintaining consistent optical performance and reliable delivery schedules.
Reliable Optical Filter Solutions for Your Project
Selecting the right infrared bandpass filter requires balancing wavelength accuracy, blocking performance, delivery time, and customization capability. If you need technical support for an 865nm filter solution, sample evaluation, or OEM customization, contact OPTOStokes at sales@optofilters.com or submit an inquiry through our website.
Tags: Optical Filters Bandpass Filters Infrared Filter NIR Filter 865nm Bandpass Filter FWHM CWL