LP840 Longpass Filter (T>90%@850-1800nm, OD5@200-810nm)

Professional LP840 Longpass Filter - Extended Range Near-Infrared Optical Filtering

The LP840 Longpass Filter is engineered for demanding near-infrared applications requiring precise wavelength separation at 840nm. With excellent 90% transmission efficiency and superior OD5 blocking, this filter delivers exceptional performance for advanced NIR optical systems with an extended spectral range up to 1800nm.

Technical Specifications:

• Cut-on Wavelength: 840nm (T=50%)
• High Transmission: T>90% @ 850-1800nm
• Superior Blocking: OD5 @ 200-810nm

Key Applications:

• NIR Fluorescence Imaging: Ideal for deep tissue imaging and biological studies
• Semiconductor Inspection: Essential for silicon wafer analysis and quality control
• Biomedical Imaging: Perfect for non-invasive medical diagnostics
• Material Analysis: Optimal for polymer and pharmaceutical characterization
• Laser Systems: Effective filtering for 808nm and other NIR laser applications
• Industrial Sensing: Quality control and process monitoring

Performance Features:

• Sharp transition edge for precise 840nm cutoff
• High 90% transmission minimizes signal loss
• OD5 blocking provides excellent background suppression
• Extended spectral range to 1800nm for versatile applications
• Consistent performance across entire filter aperture
• Low scatter for clean optical systems
• Stable performance under varying conditions

Technical Advantages:

• Extended Range: Broad transmission window from 850nm to 1800nm
• High Transmission: 90% efficiency ensures minimal signal loss
• Superior Blocking: OD5 performance provides outstanding background suppression
• Research Grade: Professional quality for scientific applications

Application Areas:

• Medical Devices: Non-invasive diagnostic and therapeutic systems
• Industrial Inspection: Quality control and material characterization
• Research: NIR spectroscopy and optical studies
• Agriculture: Crop monitoring and food quality analysis

Quality & Reliability:

• Advanced multi-layer coating technology
• Rigorous quality control ensures specification compliance
• Compatible with standard optical mounts and systems
• Suitable for both research and industrial applications
• Designed for high-power NIR laser environments

Perfect for: Near-infrared imaging systems, biomedical research, material analysis, and optical systems requiring high-performance NIR filtering with extended transmission range and excellent visible light blocking.