LP1250 NIR Longpass Filter | 1.0mm Thickness, OD2 Blocking, High Transmission

The OPTOStokes LP1250 is a high-performance near-infrared longpass filter designed for reliable spectral control in demanding industrial and scientific optical systems. Manufactured with precision hard dielectric thin-film coating technology, this filter delivers consistent >90% transmission across the 1240–1700nm wavelength range, while providing OD2 blocking of unwanted light from 200 to 1190nm. As part of our extensive in-stock longpass filters portfolio, it is built to world-class quality standards, ensuring stable long-term performance in continuous operating environments.

Technical Specifications

Typical Applications

This 1250nm longpass filter is optimized for a broad range of NIR optical applications across industrial and scientific sectors. It is widely deployed in machine vision inspection systems, laser systems line cleanup, NIR imaging, industrial inspection, analytical instrumentation, and optical testing setups. Its sharp spectral edge and uniform blocking performance effectively separate target NIR signals from visible and UV background noise, improving measurement accuracy and system signal-to-noise ratio.

Customization & Service Support

OPTOStokes offers full customization options for the LP1250 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.

Reliable Optical Solutions for Your Project

Engineering and procurement teams often face common challenges when sourcing optical filters, including inconsistent coating quality, 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. For technical consultation, custom pricing, or sample requests, contact our optical specialists at sales@optofilters.com or submit an inquiry directly through our website.