Products Description
BP1200 Bandpass Filter | CWL 1200nm, FWHM 10nm, OD>5
The OPTOStokes BP1200 optical bandpass filter is engineered for demanding near-infrared (NIR) applications requiring steep spectral roll-off, exceptionally high transmission, and broad deep blocking. Featuring a center wavelength of 1200±2nm and a narrow full width at half maximum (FWHM) of 10±2nm, this optical filter isolates critical NIR spectral lines while effectively eliminating out-of-band background noise from 200nm to 1400nm at OD>5. Built with hard dielectric coatings on precision optical glass substrates, the BP1200 offers long-term environmental stability and optical performance for both prototyping and OEM mass production.
Technical Specifications
| Parameter | Specification |
|---|---|
| Product Model | BP1200 |
| Center Wavelength (CWL) | 1200 ± 2 nm |
| Full Width at Half Maximum (FWHM) | 10 ± 2 nm |
| Peak Transmission | T > 90% @ 1200 nm |
| Out-of-Band Blocking | OD > 5 (200 nm - 1400 nm) |
| Substrate Material | Optical Glass |
| Coating Technology | Hard Dielectric Thin-Film Coating |
| Surface Quality | 60/40 Scratch-Dig (Standard) / 40/20 (Custom) |
Primary Applications
The BP1200 bandpass filter is optimized for precise near-infrared spectral discrimination across key scientific and industrial fields:
NIR Spectroscopy & Chemical Analysis: Enables accurate quantitative measurement in moisture detection, hydrocarbon sensing, and pharmaceutical material verification.
Moisture & Content Detection: Provides targeted wavelength selection for online quality monitoring systems in food processing and agricultural analysis.
Laser and Sensor Systems: Ideal for filtering illumination noise in specialized Laser Line Filters setups and optical sensor modules operating around the 1200nm waveband.
Customization & Engineering Services
OPTOStokes supports your system requirements from early-stage research to high-volume manufacturing. In addition to our extensive inventory of off-the-shelf Narrow Bandpass Filters, we provide flexible OEM customization options:
Custom Geometries: Round, square, rectangular, and custom CNC-shaped dimensions tailored to your optical bench or device housing.
Mounting Options: Unmounted optics or pre-mounted components in anodized aluminum rings with custom clear apertures and threading.
Reliable OEM Supply: Dependable lead times, strict batch-to-batch repeatability, and world-class quality standards backed by specialized OEM Optical Filters manufacturing capabilities.
Resolve Optical Noise & Secure Your Supply Chain
Unstable center wavelength shifts, insufficient out-of-band rejection, and prolonged delivery schedules can compromise project timelines and instrument accuracy. OPTOStokes eliminates these risks by combining precision thin-film deposition with guaranteed optical quality and immediate inventory availability.
Need custom sizes, spectral data sheets, or a volume quotation? Contact our engineering team today at sales@optofilters.com or submit an online inquiry. We are ready to assist with your technical specifications and provide fast-turnaround solutions.
Tags: OPTOStokes narrow bandpass filter optical coatings NIR optical filter 1200nm bandpass filter
