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The uncooled Dual-FOV infrared thermal imager is a mature and highly reliable product independently developed by our company that complies with ISO standards. It uses high-quality materials and advanced manufacturing technology.The dual field thermal imaging instrument has strong adaptability to harsh environments and can achieve both long-distance detection and detail recognition, greatly improving detection accuracy.
Details Parameters
Advanced technologies for the highest performance long-wave focal planes:
1.High-durability and hard-carbon 8-14 µm LWIR wavelength DLC exposed mirror coating.
2.High precision manufacturing processes and strict quality control procedures ensure stable imaging in various practical use environments.
3.Optimized for 640x512 LWIR cameras with 17 μm pixel pitch.
4.Dual field of view design to meet various application requirements.
| Specifications | ||
| OPTICAL | ||
| Focal Length / F# | 60mm/180mm F0.9/1.2 | Compatible with detectors having 60mm&180mm |
| Detector (FPA) type | 640×512-17μm | |
| Working Spectral Band(SR) | 8um-14um | |
| FOV | 10.36°×8.3°/3.46°×2.77° | |
| Exposed Mirror Coating | DLC | AR and HD are available upon request |
| Imaging Range | 15m to infinity | |
| MECHANICAL | ||
| Zoom Mechanism | Motorized | |
| Total Weight | 2.2kg | lens and control pannel |
| Dimensions | 209mm×178mm×185mm | Length is available upon request |
| Mount | Customized to Specification | |
| ENVIRONMENTAL | ||
| Operating Temperature | -40ºC to +60ºC | |
| Storage Temperature | -40ºC to +60ºC | Keep two houres when test |
| Shock and Vibrations | Per applicable standard | |
| Front Lens Sealing | IP67 | |
Features
Detection, Recognition & Identification (DRI) Range
DRI ranges enable one to easily estimate the maximum range that an object can be either detected, recognized or identified. It is important to note that these estimates are based solely on geometrical parameters – the target size, distance, lens focal length and camera detector pixel size. Signal level, detector sensitivity, atmospheric conditions and other factors are not considered!
Detection: An object is present – Car3.18km/9.53km&Person0.71km/2.12km.
Recognition: discern the type of object – Car1.06km/3.18km&Person0.24km/0.71km.
Identification: discern specific objects –Car0.53km/1.59km&Person0.12km/0.35km.
The 60/180mm uncooled LWIR dual FOV lens is designed for thermal imaging systems that require both long-range detection and detailed target observation. With 60mm and 180mm focal lengths, F0.9/F1.2 optics and compatibility with 640×512 detectors with a 17μm pixel pitch, this motorized dual-FOV lens provides flexible viewing for security, industrial surveillance, firefighting and airborne thermal imaging applications.
The 60mm focal length provides a relatively wider field of view for target searching and situational awareness. The 180mm focal length delivers a narrower field of view for long-distance observation, target recognition and identification. This dual-FOV configuration allows one thermal imaging system to cover different observation tasks without replacing the lens.
Explore more focal-length combinations in our LWIR uncooled dual-FOV lens range, or contact us for a customized infrared lens solution.
Long-range dual-FOV design: Combines 60mm and 180mm focal lengths in one optical assembly.
Fast LWIR optics: F0.9/F1.2 apertures support efficient 8–14μm thermal imaging.
Uncooled detector compatibility: Optimized for 640×512 detectors with a 17μm pixel pitch.
Motorized FOV switching: Enables remote selection between wide and narrow optical positions.
Passive athermalized assembly: Designed to support stable optical performance across the specified temperature range.
DLC exposed mirror coating: AR and HD coating options are available upon request.
Outdoor-ready construction: IP67 front lens sealing and -40°C to +60°C operating temperature.
| Category | Parameter | Specification |
|---|---|---|
| Optical | Focal Length / F# | 60mm / 180mm, F0.9 / F1.2 |
| Detector Type | 640×512, 17μm pixel pitch | |
| Working Spectral Band | 8–14μm | |
| Field of View | 10.36° × 8.30° / 3.46° × 2.77° | |
| Imaging Range | 15m to infinity | |
| Exposed Mirror Coating | DLC; AR and HD available upon request | |
| Lens Assembly | Passive athermalized lens assembly | |
| Mechanical | FOV Switching | Motorized |
| Total Weight | Approximately 2.2kg, including lens and control panel | |
| Dimensions | 209mm × 178mm × 185mm | |
| Mount | Customized according to system requirements | |
| Environmental | Operating Temperature | -40°C to +60°C |
| Storage Temperature | -40°C to +60°C | |
| Front Lens Sealing | IP67 | |
| Shock and Vibration | According to the applicable standard |
A 60/180mm dual-FOV lens is suitable for systems that must search a relatively broad area and then examine distant targets in greater detail. The two focal lengths serve different observation requirements:
60mm wide FOV: Supports initial target detection, area scanning and situational awareness.
180mm narrow FOV: Supports long-distance observation, target recognition and identification.
With motorized switching, operators can select the required field of view through the host system. This reduces the need for separate wide-angle and long-range thermal cameras and helps simplify optical integration.
The following values are geometric reference estimates for the 60mm and 180mm optical positions. Actual performance may vary according to target size, atmospheric conditions, detector sensitivity, signal level and system configuration.
| Task | Target | 60mm FOV | 180mm FOV |
|---|---|---|---|
| Detection | Vehicle | 3.18km | 9.53km |
| Detection | Person | 0.71km | 2.12km |
| Recognition | Vehicle | 1.06km | 3.18km |
| Recognition | Person | 0.24km | 0.71km |
| Identification | Vehicle | 0.53km | 1.59km |
| Identification | Person | 0.12km | 0.35km |
Long-range security and perimeter surveillance
UAV and airborne thermal imaging systems
Border and infrastructure monitoring
Industrial equipment and remote facility inspection
Firefighting and search-and-rescue systems
Long-distance observation and target tracking equipment
IRLENS supports thermal camera manufacturers, OEMs and system integrators with project-based optical and mechanical integration. The mounting interface can be customized according to the host platform, while coating options can be selected according to the application environment and optical requirements.
For an accurate product recommendation and quotation, please provide:
Thermal detector resolution and pixel pitch
Required field-of-view configuration
Available installation space and mounting interface
Motor control and host-system requirements
Operating environment and protection requirements
Sample quantity and estimated purchase volume
It is a long-wave infrared lens with two selectable focal lengths: 60mm for a wider observation field and 180mm for narrow-field, long-distance viewing. It is designed for uncooled thermal camera systems.
This model is optimized for a 640×512 detector with a 17μm pixel pitch. Detector compatibility should be confirmed before final system integration.
The two fields of view are 10.36° × 8.30° and 3.46° × 2.77°, corresponding to the 60mm and 180mm focal lengths.
Yes. The dual-FOV switching mechanism is motorized, allowing the host system to select the required focal length during operation.
Yes. The mount can be customized according to the host thermal camera, UAV payload or other integration platform. AR and HD coating options are also available upon request.
The lens has IP67 front lens sealing and supports an operating temperature range of -40°C to +60°C. Final outdoor suitability should be evaluated together with the complete camera enclosure and system design.
Looking for a 60/180mm uncooled LWIR dual FOV lens for long-range surveillance, airborne imaging or industrial thermal monitoring? Send us your detector information, mechanical requirements, application conditions and estimated quantity.
Contact IRLENS for datasheets, samples, technical evaluation and project pricing.
High Performance Mid-Wave Focal Plane
Passive Athermalized Lens Assembly
Using advanced technologies, top-quality materials and unique coating techniques, together with innovative engineering and opto-mechanical designs, we have earned a reputation for excellent performance, durability and quality.
FAQ
View MoreWhat is an infrared lens?
An infrared lens is a type of optical lens that is designed to focus infrared light. It is made of materials and has coatings that allow it to efficiently transmit infrared wavelengths, which are longer than those of visible light. Infrared lenses are used in various applications such as infrared cameras, thermal imaging systems, and night vision devices, enabling the capture of images in low-light or no-light conditions based on the infrared radiation emitted or reflected by objects.
What are the main applications of IR lenses?
Infrared lenses are widely used in many fields. In the field of security and surveillance, they are used in infrared cameras for night monitoring to detect intruders or monitor activities in the dark. In the military, they are used for night vision goggles and infrared detection systems to enhance situational awareness. In industry, they are applied in thermal imaging cameras for equipment inspection, detecting overheating components or heat leaks in pipelines. In addition, infrared lenses are also used in astronomy for observing celestial bodies that emit infrared radiation, and in some scientific research fields such as environmental monitoring and remote sensing.
What materials are commonly used to make IR lenses?
Common materials for infrared lenses include germanium (Ge), zinc selenide (ZnSe), and silicon (Si). Germanium is a popular choice due to its excellent infrared transmission properties in the mid-wave and long-wave infrared regions. It has a high refractive index, which allows for more compact lens designs. Zinc selenide is another commonly used material that offers good infrared transparency and is suitable for a wide range of infrared wavelengths. Silicon is also used, especially in the near-infrared range, and has the advantage of being relatively inexpensive and compatible with semiconductor manufacturing processes.
How are infrared lenses designed to handle different infrared wavelengths?
Infrared lenses are designed with materials and optical geometries that are optimized for specific infrared wavelength ranges. For example, lenses for near-infrared (NIR) applications may have different refractive indices and curvatures compared to those for mid-wave infrared (MWIR) or long-wave infrared (LWIR).
How is the performance of an IR lens evaluated?
The performance of an infrared lens is evaluated by several parameters. Modulation Transfer Function (MTF) is an important indicate that measures the lens's ability to transfer contrast from the object to the image plane at different spatial frequencies, indicating the sharpness and clarity of the image. Another parameter is the focal length, which determines the magnification and field of view of the lens. The aperture or f-number affects the amount of light that can pass through the lens and thus the brightness of the image. In addition, factors such as chromatic aberration, distortion, and the lens's ability to maintain focus over a range of temperatures also play important roles in evaluating its performance.
How to ensure the quality of infrared lenses during the manufacturing process?
During the manufacturing process of infrared lenses, strict quality control measures are essential. This includes precise grinding and polishing of the lens surfaces to achieve the required curvature and smoothness, which is crucial for accurate focusing and minimizing light scattering. High-quality coating processes are also necessary to apply anti-reflective coatings that enhance the infrared transmission and reduce unwanted reflections. Meticulous inspection and testing at each stage of production, such as using interferometers to measure surface accuracy and another testing equipment to evaluate optical performance, help to identify and correct any defects or deviations from the required specifications. Additionally, maintaining a clean and controlled manufacturing environment is important to prevent contamination that could affect th
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In the aerospace field, infrared lenses play an indispensable role. Airborne night vision is one of its important applications. In addition, in satellite remote sensing, infrared lenses can penetrate clouds and obtain information such as surface temperature and vegetation cover, contributing to agricultural monitoring, geological exploration, and more. It also can detect the infrared radiation of celestial bodies like asteroids and comets.
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Infrared lens can operate in low-light or even complete darkness, using the infrared radiation emitted by objects for imaging. Moreover, they are not affected by severe weather such as heavy rain and thick fog, and can penetrate these obstacles to capture targets, ensuring the stability of monitoring, greatly enhancing the reliability and comprehensiveness of security monitoring.
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These lenses are designed to capture infrared radiation, which is invisible to the human eye but emitted by objects based on their heat signatures. They focus this infrared light onto an image sensor, converting it into a visible image that can be displayed on a monitor inside the vehicle. This enables drivers to perceive potential obstacles on the road much earlier than with normal vision, providing them with more reaction time and significantly enhancing driving safety in low-light conditions.
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