Optical Specifications: Focal length 19mm infrared lens with ultra-large aperture F1.0. The horizontal field of view reaches 22.85°, offering balanced detection distance and scene coverage. Operating wavelength covers 8~12μm long-wave infrared atmospheric window, the core spectrum for passive thermal imaging.
Detector Compatibility: Optimized for 640×512 resolution, 12μm pixel pitch infrared detectors, perfectly matching mainstream uncooled thermal sensor modules.
Mechanical & Environmental Parameters: M25×0.5 mount standard thread mount for convenient assembly. Focus range covers 0.5m to infinity, supporting both close-range and long-distance observation. Operating temperature spans -40℃ ~ +80℃, suitable for extreme cold and high-temperature working scenarios. Front optical element reaches IP67 ingress protection rating.
Optical Quality Indexes: Exposed optics with AR coating; overall transmittance ≥90%; relative illumination ≥86%; distortion controlled below -10%.
| Parameter | Value |
|---|---|
| Focal Length | 19mm |
| F/# | F1.0 |
| Compatible Detector | 640×512, 12μm |
| Exposed Optics Coating | AR |
| Field of View | 22.85°(H) |
| Focus Range | 0.5m ~ ∞ |
| Operating Temperature | -40°C ~ +80°C |
| Relative Illumination | ≥ 86% |
| Distortion | < -10% |
| Transmittance | ≥ 90% |
| Mount | M25 × 0.5 |
| Front Element Ingress Protection Rating | IP67 |
| Wavelength | 8 ~ 12μm |


Superior Light Collection: F1.0 ultra-large aperture greatly improves infrared photon receiving efficiency, enabling thermal cameras to capture clear temperature contrast under low radiant heat conditions.
High Optical Efficiency: ≥90% transmittance together with AR coating minimizes infrared energy loss; ≥86% relative illumination ensures uniform image brightness from image center to edge, avoiding dark corners.
Harsh Environment Adaptability: IP67 front lens waterproof structure prevents dust and water splashes. Wide working temperature range effectively suppresses optical thermal drift and maintains stable imaging performance under temperature fluctuations.
Flexible Focus Adjustment: 0.5m to ∞ focus range realizes switching between short-distance target inspection and long-distance monitoring. Controllable Distortion: Distortion less than -10% reduces image geometric deformation, improving measurement accuracy for temperature detection applications.
Standardized Interface: M25×0.5 mount supports quick integration with most uncooled IR lens thermal camera assemblies.
Perimeter Security & Border Monitoring: Security optics is a core business segment of Shanghai Silk Optical Technology Co., Ltd.. Applied to outdoor thermal surveillance cameras, detecting intruders day and night without visible light, ideal for factory fences, park boundaries and frontier inspection.
Industrial Predictive Maintenance: Mounted on thermal inspection devices to check overheating faults of power equipment, mechanical bearings, electrical cabinets and pipeline systems.
Fire Prevention & Early Warning Systems: Used for forest fire monitoring, warehouse fire risk detection, identifying abnormal high-temperature points in advance.
Vehicle-mounted Thermal Vision Systems: Serves as night driving auxiliary vision for special vehicles, detecting pedestrians, obstacles and wildlife in complete darkness or heavy fog.
Building Energy Conservation Detection: Equipped on portable thermal imagers to inspect building wall heat loss, air leakage and insulation defects.
Unmanned System Payloads: Integrated onto UAVs for aerial thermal survey, environmental monitoring and search & rescue missions.