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                              19mm Infrared Thermal Lens
                              • 19mm Infrared Thermal Lens19mm Infrared Thermal Lens
                              • 19mm Infrared Thermal Lens19mm Infrared Thermal Lens
                              • 19mm Infrared Thermal Lens19mm Infrared Thermal Lens
                              • 19mm Infrared Thermal Lens19mm Infrared Thermal Lens
                              • 19mm Infrared Thermal Lens19mm Infrared Thermal Lens

                              19mm Infrared Thermal Lens

                              This F1.0 19mm Infrared Thermal Lens developed by ShangHai SLIK Optical Technology CO., LTD is a high-performance optical component designed for long-wave infrared thermal imaging systems working within 8~12μm wavelength band. The 19mm F1.0 Infrared Thermal Lens supports 640×512, 12μm infrared detectors, balancing moderate horizontal field of view and outstanding light gathering capability. Manufactured by ShangHai SLIK Optical Technology CO., LTD, this thermal lens adopts anti-reflection (AR) coating on exposed optical surfaces and features IP67 front element waterproof structure, adapting to harsh outdoor environments. With adjustable focus ranging from 0.5m to infinity, stable optical performance between -40℃ and +80℃, the lens delivers excellent transmittance and relative illumination. It is a reliable optical solution for industrial monitoring, perimeter security and temperature measurement thermal cameras.

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                              Product Description

                              Detailed Product Description

                              1. Parameter Analysis

                              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

                              19mm Infrared Thermal Lens19mm Infrared Thermal Lens

                              2. Performance Advantages

                              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.


                              3. Application Field

                              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.



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