ZV-LAF25W62-M34 | 25mm F1.0 Athermalized LWIR Lens | 640x512 12um VOx | Long-Range Germanium-Free
Product Overview
The ZV-LAF25W62-M34 is a 25mm F1.0 athermalized LWIR lens designed for 640x512 12um uncooled thermal detectors where extended recognition range is the primary requirement. With 18.1 degrees horizontal FOV and DRI reaching approximately 4.5km detection (human target, EN IEC 62676-4:2025), this lens delivers the longest identification range of any germanium-free lens in the ZanVision lineup. The passive athermalization ensures crisp focus from arctic to desert conditions without any mechanical intervention.
Key Advantages
Extended Recognition Range: 1.1km recognition / 560m identification (human, EN IEC 62676-4:2025). Enables threat classification at distances where shorter focal lengths can only detect presence.
Germanium-Free Supply Chain: No germanium procurement risks. Suitable for defense programs in countries with germanium export restrictions. Fully exportable to all markets.
Athermalized Stability: Maintains MTF performance across -40C to +80C range. No focus drift, no motor required, no field maintenance for focus adjustment.
F1.0 Fast Optics: Essential for long-range performance where atmospheric attenuation reduces target contrast. The fast aperture preserves SNR at maximum range.
M34x0.5 Standard Mount: Compatible with all major 640x512 12um detector cores. Simple mechanical integration with standard adapter rings.
Ideal Applications
Long-Range Fixed Surveillance: Perimeter protection for critical infrastructure (airports, power plants, prisons) where the camera-to-target distance exceeds 1km and operator needs to identify threats, not just detect motion.
Coastal & Maritime Monitoring: Ship detection and classification at ranges up to 4.5km. The 25mm focal length provides sufficient magnification for vessel type identification in harbor and coastal surveillance systems.
Border Security Towers: Fixed tower installations along national borders where each camera covers a sector up to 2km deep with recognition capability throughout the zone.
Long-Range Fire Detection: Early wildfire and industrial fire detection at extended standoff distances where rapid identification of hot spots is critical for response time.
