FL50mm F1.0 Long Wave 8-12um Infrared Manual Focus Germanium Lens for 640x480-17um Detector

The 50mm F/1.0 LWIR Manual Focus Lens is a high-performance infrared optic engineered for 640×480–17μm detectors, striking an optimal balance between reach and situational awareness with its 12.4°×9.3° field of view. Leveraging its fast F/1.0 light-gathering capability and >88% average transmission across the 8–12μm band, this lens excels at extracting fine thermal signatures from distant targets, making it particularly effective for mid-to-long-range observation, security patrols, and rapid threat assessment where image clarity and focus precision are paramount.

Exceptionally lightweight at just 95.3g with compact φ56mm×52.5mm dimensions, this lens features an M37×0.5-6g thread mount and is designed for seamless integration into portable and weight-sensitive thermal systems. The manual focus mechanism allows precise adjustment from 3 meters to infinity, while the lens operates reliably from –40°C to +80°C with optional DLC or AR coatings to tailor surface protection and anti-reflective performance according to specific deployment needs. With well-defined back focal distances (14.5mm BFD, 8.5mm BWD, 16mm BFL), this lens offers straightforward optical alignment and dependable performance across diverse field conditions.

50mm F/1.0 LWIR Manual Focus Lens Parameter