Longpass Filters

KUPO Optics' Longpass Filters are engineered for precision and performance. These filters, meticulously crafted with hard dielectric thin-film coatings using advanced IAD technology, deliver consistent results every time. By precisely transmitting longer wavelengths while blocking shorter ones, they tailor light to the exact needs of scientific, industrial, and imaging applications.

The durable, high-density coating not only enhances optical clarity but also protects these filters from UV, heat, and environmental wear and tear. This translates to an exceptionally long lifespan, outperforming traditional gel filters. Meeting the stringent MIL-M-13508C military specifications, KUPO Longpass Filters are built tough to deliver reliable performance even in the most demanding environments.

Features

• Superior piece-to-piece, batch-to-batch consistency
• Precise control over light transmission
• Great resistance against UV and heat  
• Exceptional durability against environmental degradation

Examples of Application

• Fluorescence Microscopy: Isolates specific fluorescence signals for clear, high-quality biological imaging.
• Raman Spectroscopy: Enables detection of weak Raman signals by blocking intense excitation laser light.
• Medical Imaging: Improves contrast in certain imaging techniques by selectively transmitting longer wavelengths.
• Machine Vision: Enhances object detection and recognition by filtering out unwanted light frequencies.
• Environmental Monitoring: Isolates specific wavelengths for accurate analysis of air and water quality.