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High sensitivity MWIR detector and 640x512 resolution for crispy image. In addition, continuous zoom lens 35~690mm can distinguish the human, vehicle and ships at long range.
Details Parameters
35-690mm F4 Continuous Zoom IR Lens is a high-performance medium-wave infrared continuous zoom lens. With its excellent optical performance and powerful functional features, it is designed to meet various high-precision infrared imaging needs. Whether it is military reconnaissance, security monitoring or industrial detection, it can easily cope with it and provide users with the best observation experience.
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# | 35~690mm F/4.0 | Compatible with detectors having 35mm ≥ EFL≤690mm |
| Detector (FPA) type | 640×512-15μm | |
| Working Spectral Band(SR) | 3.7um-4.8um | |
| FOV | 15.62°×12.52°～0.8°×0.64° | |
| Exposed Mirror Coating | High efficiency AR coating | DLC and HD are available upon request |
| Imaging Range | 2m to infinity | |
| MECHANICAL | ||
| Zoom Mechanism | Motorized | |
| Total Weight | ≤3.8kg | lens and control pannel |
| Dimensions | Ø186mm×278.46mm | 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 | |
Excellent zoom performance: The lens has a 35 - 690mm ultra-telephoto and F4 constant aperture, ensuring clear, high-contrast images throughout the focal length, and can capture tiny temperature differences even in low light conditions, meeting the needs of long-distance detection and precise monitoring.
Strong environmental adaptability: It adopts a sturdy and durable metal shell and precision machining technology, has good impact resistance and durability, can work stably under harsh environmental conditions, and adapt to various complex application scenarios.
Efficient customization service: With a strong R&D and design team, we can provide customized solutions according to customer needs. Whether it is processing according to drawings or developing specific functions, we can quickly respond and meet personalized needs to ensure that the product perfectly matches the customer's application scenarios.
Strict quality control: As the source factory, we strictly control the entire process of product production, from raw material procurement to finished product delivery, through multiple quality inspection processes, to ensure that the lens can maintain stable performance in various environments and reduce customer worries.
One-stop service experience: Provide one-stop service from design to processing, inspection and system testing to ensure the accuracy and efficiency of each link. We can respond to customer needs quickly, deliver high-quality products in a timely manner, and provide comprehensive after-sales service to provide strong support for customers' business development.
Border Security Project: In a certain country's border security project, a 35-690mm F4 Continuous Zoom IR Lens was used with a thermal imaging camera and installed on a border monitoring tower. With its long focal length and high-resolution imaging capabilities, the lens can clearly monitor the activities of people and vehicles on the border several kilometers away, helping border guards to promptly detect and deal with illegal border crossings, effectively improving the efficiency and reliability of border security.
Industrial equipment detection: A large chemical company installed an infrared thermal imager equipped with this lens in its production unit area for real-time monitoring of high-temperature pipelines, reactors and other equipment. Through infrared imaging technology, operation and maintenance personnel can promptly detect thermal anomalies of equipment and take measures in advance for maintenance and repair, avoiding production interruptions and economic losses caused by equipment failures, and improving production safety and stability.
Q: What is the zoom speed of the lens? Will it affect the imaging effect?
A: The zoom speed of the lens varies slightly under different temperature conditions. At -32℃, the zoom time is ≤7s; at a temperature ≥0℃, the zoom time is ≤5s. Such a zoom speed can ensure that the stability and smoothness of the image are not significantly affected during the rapid zoom process, and the opportunity to capture important targets will not be missed.
Q: Does the athermal design of the lens mean that focusing is not required at any temperature?
A: The athermal design mainly minimizes the impact of temperature changes on the focusing performance of the lens through the selection of materials and structures. In practical applications, although the lens can maintain a good focusing state in a wide temperature range, it may still be necessary to make appropriate focusing fine-tuning to ensure the best imaging effect in the case of extreme temperature changes or extremely high imaging accuracy requirements.
Q: The sealing level of the lens is IP67. Can it be used underwater?
A: The IP67 protection level means that the lens can prevent dust from entering and can be immersed in water to a certain depth for a short time without damage, but it does not mean that it can be used underwater for a long time. When used underwater, it is necessary to consider the impact of water pressure on the lens and the potential damage to the lens by corrosive substances in the water. Therefore, it is recommended to use the lens in a normal land environment or a short-term wading environment.
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 – Car41.4km&Person9.2km.
Recognition: discern the type of object – Car13.8km&Person3.07km.
Identification: discern specific objects –Car6.9km&Person1.53km.
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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