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MWIR detector and 640x512 resolution for crispy image. In addition, Continuous Zoom IR Lens 110~1100mm can distinguish the human, vehicle and ships at long range. The 110~1100mm F5.5 Continuous Zoom IR Lens is a high-precision infrared optical solution designed for professional industrial, scientific, and surveillance applications. Engineered for long-range observation and continuous zoom flexibility, this lens delivers exceptional thermal imaging performance across MWIR/LWIR wavebands. Its robust design ensures stability and reliability in large-scale deployments, making it ideal for organizations that require high-volume, repeatable procurement with consistent quality.
Details Parameters
Advanced technologies for the highest performance mid-wave focal planes:
1. High-durability and hard-carbon 3.7-4.8 µm MWIR wavelength AR exposed mirror coating
2. Passive athermalization with the highest imaging performance from -40 to +60°C
3. Optimized for 640x512 cooled MWIR cameras with 15 μm pixel pitch
4. Motorized focus and zoom mechanism with crisp image over the full range
| Specifications | ||
| OPTICAL | ||
| Focal Length / F# | 110~1100mm F/5.5 | Compatible with detectors having 110mm ≥ EFL≤1100mm |
| Detector (FPA) type | 640×512-15μm | |
| Working Spectral Band(SR) | 3.7um-4.8um | |
| FOV | 5°×4°～0.5°×0.4° | |
| Exposed Mirror Coating | High efficiency AR coating | DLC and HD are available upon request |
| Imaging Range | 5m to infinity | |
| MECHANICAL | ||
| Zoom Mechanism | Motorized | |
| Total Weight | ≤6.0kg | lens and control pannel |
| Dimensions | Ø218mm×326.55mm | Length is available upon request |
| Mount | Customized to Specification | |
Industrial Monitoring – High-temperature process inspection, quality control, and automated production line monitoring.
Scientific Research – Long-range environmental observation, astronomical monitoring, and thermal studies.
Security & Surveillance – Perimeter security, border monitoring, and critical infrastructure protection.
Defense & Aerospace – Target acquisition, reconnaissance, and testing with IR imaging systems.
This lens is specifically designed to meet the needs of large-scale procurement clients, including IR system integrators, industrial monitoring companies, security solution providers, and research institutions that require reliable bulk delivery.
| 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 | |
High-Volume Supply – Optimized for B2B buyers who need consistent specifications across multiple units.
Flexible Integration – Compatible with a variety of IR cameras and imaging platforms, reducing system integration time.
Proven Performance – Long-range zoom capability with high optical clarity ensures accurate detection and monitoring.
After-Sales Support – Technical support for installation, calibration, and ongoing maintenance, tailored for bulk clients.
Continuous electric zoom: Supports continuous electric zoom operation, the focal length can be smoothly adjusted from 35mm to 690mm, with the electric focus function, it can quickly adjust the focal length and focus, and achieve a smooth transition from wide angle to telephoto, which is convenient for users to switch flexibly in different scenes and easily capture the details of distant targets.
Fast and accurate focus: The electric focus system responds quickly and accurately, and can achieve accurate focus in a short time. The focus time is ≤1s, ensuring that no key moment is missed, especially suitable for dynamic monitoring and rapidly changing scenes.
Stable optical axis performance: The stability of the zoom optical axis is ≤3 pixels, the installation base is perpendicular to the optical axis, and the parallelism of the large and small field optical axes is ≤3 pixels, which ensures the stability and consistency of the image and avoids image deviation and measurement error caused by optical axis offset.
Long-distance monitoring capability: With a wide focal length range of 35 to 690mm, the lens can monitor and identify long-distance targets. For example, in security monitoring, it can clearly observe and track distant buildings, vehicles and personnel.
Q: Will the ultra-long focal length of this lens affect the imaging speed and smoothness?
A: No. The lens has an advanced built-in drive and control system, which optimizes the mechanical transmission structure of zoom and focus, and can ensure imaging speed and smoothness in the ultra-long focal length segment. The screen switches naturally without stuttering or delay, ensuring that users can observe the target dynamics in real time and clearly without missing any key information.
Q: Will the lens be affected by halo or glare under strong light?
A: The lens uses a special optical coating technology, which effectively reduces the reflected light on the lens surface and reduces the probability of halo and glare. Even in strong light environments, such as direct sunlight or searchlights, it can maintain a relatively clear imaging effect to ensure the recognizability of the target. However, in rare special cases, a slight halo phenomenon may still occur, which can be improved by adjusting the lens angle or using auxiliary measures such as a lens hood.
Q: How to perform daily maintenance and care on the lens to ensure its performance?
A: During daily maintenance, you should pay attention to keeping the lens surface clean, gently wipe the lens surface with a soft dry cloth, avoid using rough materials or wiping hard to prevent scratching the lens; regularly check the connection between the lens and the mounting platform to ensure that it is firmly installed to prevent the optical axis from shifting due to looseness; when not in use for a long time, the lens should be stored in a dry, cool, dust-free environment and avoid contact with corrosive substances; if you find abnormal conditions in the lens during use, such as blurred images, zoom jams, etc., you should contact the manufacturer or professional maintenance personnel for inspection in time, and do not disassemble the lens by yourself.
Q: Does this lens support integration with other brands of surveillance equipment?
A: Yes. This lens uses standardized electrical interfaces and communication protocols. As long as the interfaces and parameters of the surveillance equipment are compatible, it can be integrated with other brands of equipment; however, in actual applications, in order to ensure the best compatibility and stability of the system, it is recommended to consult the lens manufacturer or equipment supplier for detailed compatibility information before integration, and configure and debug according to the corresponding installation guide and operation manual.
Our continuous zoom IR lenses are widely adopted by professional organizations that rely on high-performance thermal imaging. Typical buyers include:
IR system integrators developing advanced thermal imaging modules and turnkey solutions
Industrial automation and monitoring companies requiring stable long-range thermal observation
Security and surveillance solution providers building perimeter protection or 24/7 monitoring systems
Research laboratories and scientific institutions conducting infrared measurement, tracking, or optical R&D
Aerospace and defense contractors integrating cooled IR optics into targeting, tracking, and reconnaissance platforms
Explore the 110~1100mm F5.5 Continuous Zoom IR Lens for reliable long-range thermal imaging. Contact Beijing IRLENS today to discuss bulk orders, customization options, and technical support tailored for your procurement needs.
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!
Constant F4 aperture: The full-focal-length constant F4 aperture design keeps the aperture unchanged during the zoom process, ensuring the stability of the amount of light entering, which is conducive to obtaining uniform exposure at different focal lengths, while enhancing the flexibility and consistency of shooting.
Low distortion: Positive distortion is ≯5% at short focal length and negative distortion is ≯1% at long focal length. The distortion control is excellent, which effectively reduces the deformation and distortion of the image, making the imaging more realistic and reliable, which is of great significance for high-precision measurement and monitoring applications.
Athermal design: By using special materials and mechanical structures, the lens has excellent athermal characteristics, which can maintain stable optical performance in a wide temperature range of -32℃ to +80℃, without frequent focusing, ensuring clear and stable images under extreme temperature conditions
Detection: An object is present – Car66km&Person14.67km.
Recognition: discern the type of object – Car22km&Person4.89km.
Identification: discern specific objects –Car11km&Person2.44km.
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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Application Scenario
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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Since different materials and components in industrial settings have distinct infrared emission characteristics, these lenses enable the detection of thermal anomalies. In the manufacturing of mechanical parts, infrared lenses can detect areas with abnormal heat distribution during the production process, helping to ensure product quality and prevent defects.
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At the fire scene, infrared lenses can penetrate smoke and flames and clearly display the location of trapped persons, the direction of fire spread, and the ignition point. This helps firefighters quickly formulate rescue plans, improve search and rescue efficiency, and reduce casualties and property losses. In addition, it can also be used for fire hazard investigation to discover potential fire risks such as overheating of electrical equipment and accumulation of flammable materials in advance.
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Infrared lenses are the key components in gas detection instruments, enabling the precise identification and quantification of various industrial gases. Many industrial gases have unique absorption characteristics in the infrared spectrum.
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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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