LP5500nm MWIR Longpass Filter | OD2 Blocking, 80% Average Transmission

The OPTOStokes LP5500nm is a precision mid-infrared longpass filter engineered for reliable spectral control in thermal sensing and infrared detection systems. Fabricated with advanced hard dielectric thin-film coating technology, this filter delivers consistent average transmission greater than 80% across the 5600–14000nm wavelength range, while providing OD2 blocking of unwanted shorter wavelengths from 200 to 5400nm. As part of our extensive in-stock longpass filters portfolio, it is manufactured to world-class quality standards, ensuring stable long-term performance in continuous industrial and medical operating environments.

Technical Specifications

Typical Applications

This 5500nm MWIR longpass filter is optimized for applications requiring precise mid-infrared spectral selection and effective short-wavelength rejection. It is widely deployed in human body temperature measurement systems, infrared sensing modules, infrared imaging devices, and industrial inspection equipment. Its uniform transmission performance across the mid-infrared band ensures accurate thermal detection and stable signal output, making it an ideal choice for temperature monitoring, fire detection, and environmental sensing systems.

Customization & Service Support

OPTOStokes offers comprehensive customization options for the LP5500nm filter to meet unique system integration requirements. Available modifications include custom substrate dimensions, circular, square or irregular shapes, and mounting ring assembly for seamless installation. We maintain an extensive in-stock selection of standard configurations for fast turnaround, while delivering high-level custom coating solutions with reliable lead times and guaranteed world-class quality for both prototype validation and volume production orders.

Expert Optical Solutions for Your Project

Engineering and procurement teams often face common challenges when sourcing mid-infrared optical filters, including inconsistent coating uniformity, uncertain delivery schedules, and limited technical support for custom specifications. At OPTOStokes, we combine advanced thin-film coating expertise, rigorous quality control processes, and flexible supply capabilities to address these pain points effectively. For technical consultation, custom pricing, or sample requests, contact our optical specialists at sales@optofilters.com or submit an inquiry directly through our website.