IR BP4000 Bandpass Filter | CWL 4000nm±20nm, FWHM 90±20nm, 0.5mm
The OPTOStokes IR BP4000 is a high-precision bandpass filter fabricated from premium single-crystal silicon, optimized for mid-infrared gas imaging applications. It provides transmission greater than 80 percent at the target band, with a center wavelength of 4000nm ±20nm and a full width at half maximum of 90±20nm. Designed for 0 degree angle of incidence, this ultra-thin 0.5mm filter delivers reliable high OD blocking across the 400–11000nm range, ensuring clean signal isolation for demanding infrared imaging systems.
Technical Specifications
| Parameter | Specification |
|---|---|
| Product Name | IR BP4000-90nm |
| Substrate Material | Single-crystal silicon |
| Center Wavelength (CWL) | 4000nm ±20nm |
| Full Width at Half Maximum (FWHM) | 90±20nm |
| Transmission | Transmission greater than 80 percent |
| Blocking Range & Optical Density | 400–11000nm, optical density greater than 2 |
| Angle of Incidence (AOI) | 0 degree |
| Substrate Thickness | 0.5mm |
Applications
This high-performance IR filters is specifically designed for applications requiring precise spectral selection at 4000nm, a critical wavelength for infrared gas imaging and detection. Its exceptional optical performance makes it ideal for:
Infrared gas imaging cameras and leak detection systems
Industrial pipeline and storage tank inspection
Environmental air quality monitoring and emissions testing
Petrochemical plant safety and hazard detection
Mid-infrared spectroscopic analysis instruments
Industrial process control and non-contact measurement
Customization & Service
OPTOStokes offers comprehensive custom optical filter solutions to meet your exact system requirements. We manufacture filters in standard circular, square and custom irregular shapes, with optional precision mounting rings for seamless integration into your optical assemblies. Our extensive in-stock inventory ensures fast shipping for standard specifications, while our advanced manufacturing capabilities deliver custom orders with reliable, predictable lead times. All products are manufactured to world-class quality standards and undergo rigorous 100% optical testing before shipment.
Pain Points & CTA
Technical teams often face critical challenges: long lead times for custom infrared components, inconsistent spectral performance, and lack of specialized technical support for gas imaging systems. These issues can compromise detection accuracy and delay project milestones. At OPTOStokes, we solve these problems with our extensive ready-to-ship inventory, flexible manufacturing capabilities, and dedicated technical support team. Whether you need a single prototype for testing or high-volume production runs, we deliver precision optical components on time, every time.
For detailed datasheets, volume pricing, or to discuss your specific filter requirements, contact our expert team at [email protected] or submit an inquiry through our website today.
