Detailed Product Description

1. Parameter

Focal Length & Aperture: Fixed 13mm focal length paired with ultra-fast F1.0 aperture. The large aperture maximizes infrared photon intake, significantly improving signal-to-noise ratio for thermal sensors.

Working Spectrum: 8–12μm long-wave infrared (LWIR), the primary atmospheric transmission window for passive thermal detection.

Detector Compatibility: Matches 640×512 resolution detectors with 12μm pixel pitch, forming diagonal 40.7° field of view (horizontal:32.6°, vertical:26.3°) for medium-range observation.

Mechanical & Environmental Specifications: M20×0.5 mount for easy assembly; front element achieves IP67 ingress protection. Operating temperature spans -40℃ ~ +80℃, adapting to extreme cold and hot outdoor scenarios. Focus range covers 1m to infinity, supporting both near and distant thermal targets.

Optical Index: ≥86% overall transmittance, ≥75% relative illumination; distortion controlled within ≤-1.5%. Exposed optics adopt anti-reflection (AR) coating to reduce surface reflection loss.

2. Performance Advantages

Superior low-light thermal sensitivity: F1.0 large aperture collects far more infrared energy compared with slower F-number infrared lenses, enhancing image clarity at long detection distances.

Excellent optical uniformity: High relative illumination ensures consistent brightness across the whole image frame, avoiding dark corners. Low distortion retains true target geometry for measurement and recognition.

High spectral efficiency: AR coating plus ≥86% transmittance minimizes infrared energy loss, fully releasing the potential of uncooled thermal detectors.

Robust environmental adaptability: IP67 front lens waterproof and dustproof design eliminates the need for extra external protective windows for many installations. Wide temperature range prevents defocus and performance shift under extreme ambient temperature.

Compact integration friendly: Standard M20×0.5 mount enables seamless integration into miniaturized thermal cameras developed by system partners.

3.Application Fields

Border security & perimeter surveillance: Outdoor thermal monitoring for intrusion detection day and night.

Industrial predictive maintenance: Detect overheating faults of power equipment, machinery and pipelines.

Automotive thermal vision: Aftermarket infrared night vision driving assistance systems.

Unmanned systems: Thermal payloads for small UAVs, unmanned ground vehicles for search and rescue.

Fire prevention & forest monitoring: Early identification of hidden fire sources.

Building energy audit: Thermal inspection for heat loss, air leakage and insulation defects.

Marine surveillance: Day-night maritime target detection under foggy conditions.

ShangHai SLIK Optical Technology CO., LTD provides this series of LWIR thermal lenses with standardized quality control and customizable service support to satisfy mass production demands of thermal imaging manufacturers globally.