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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 AR exposed mirror coating.
2.High precision manufacturing processes and strict quality control procedures ensure stable imaging in various practical use environments.
3.Optimized for 1280x1024 LWIR cameras with 12 μm pixel pitch.
4.Dual field of view design to meet various application requirements.
| Specifications | ||
| OPTICAL | ||
| Focal Length / F# | 20mm/60mm F1.0/1.2 | Compatible with detectors having 20mm&60mm |
| Detector (FPA) type | 640×512-12μm | |
| Working Spectral Band(SR) | 8um-12um | |
| FOV | 21.74°×17.46°/7.32°×5.86° | |
| Exposed Mirror Coating | High efficiency AR coating | DLC and HD are available upon request |
| MECHANICAL | ||
| Zoom Mechanism | Motorized | |
| Total Weight | ≤2.5kg | lens and control pannel |
| Dimensions | φ140mm×190.95mm | 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 – Car3.75km/11.25km&Person0.83km/2.5km.
Recognition: discern the type of object – Car1.25km/3.75km&Person0.28km/0.83km.
Identification: discern specific objects –Car0.63km/1.88km&Person0.14km/0.42km.
F0.95/F1.15 Infrared Optics for OEM Thermal Camera Integration
The IRLENS 50/150mm uncooled LWIR dual FOV lens provides two discrete optical viewing positions for thermal imaging systems. The 50mm position offers broader scene coverage, while the 150mm position provides a narrower field of view and a larger image of distant objects on the same detector.
Designed for integration into uncooled thermal cameras, this lens gives equipment manufacturers and system integrators a defined focal length pair for scene observation and detailed inspection. Discuss your detector, mounting requirements and production quantities with IRLENS to evaluate the right configuration for your project.
Compare other focal length combinations in our Uncooled LWIR Dual FOV Lenses range.
Request the Datasheet and Volume Pricing
| Parameter | Specification |
|---|---|
| Product type | Uncooled LWIR dual field-of-view lens |
| Focal length pair | 50mm / 150mm |
| F-number at 50mm | F0.95 |
| F-number at 150mm | F1.15 |
| Optical viewing positions | Two discrete focal lengths |
| Focal length ratio | 3:1 |
| Intended integration | Uncooled thermal imaging cameras |
Request the model-specific datasheet and mechanical drawing to confirm detector compatibility, spectral coverage, field of view, dimensions, weight and operating limits for your configuration.
On a given detector, the 50mm position covers a wider scene than the 150mm position. It helps operators retain more surrounding context when observing a site, locating an area of interest or assessing movement within the camera's coverage.
The 150mm position concentrates the view on a smaller part of the scene. For distant objects on the same detector, it produces approximately three times the linear image scale of the 50mm position. This can support closer examination of features that occupy fewer pixels in the wider view.
The two focal lengths are paired with F0.95 and F1.15 apertures respectively. Evaluate the lens transmission and image quality at both positions against your detector's sensitivity and spatial resolution requirements. The complete camera design determines the resulting thermal image performance.
The 3:1 focal length ratio describes the relationship between the two optical positions. This dual-FOV configuration provides two specified views; intermediate focal lengths are not specified as usable imaging positions.
Focal length alone does not determine compatibility. A successful 50/150mm LWIR lens integration requires the optical image, mechanical interface and control arrangement to match the camera platform.
Detector matching: provide the detector model, active dimensions, resolution and pixel pitch for image circle and image quality evaluation.
Field of view: specify the horizontal and vertical coverage required at both 50mm and 150mm.
Mechanical interface: confirm the mounting thread or flange, back focal distance, installation envelope and protective window arrangement.
Focus and switching: define control requirements, switching time and acceptable focus or optical-axis shift between positions.
Operating conditions: identify temperature, vibration, moisture and dust exposure for the intended installation.
For prototype evaluation, test both optical positions on your actual camera core. Include image quality, focus repeatability and alignment in the acceptance criteria before releasing the configuration for repeat orders.
This focal length combination can be evaluated for professional thermal systems requiring both scene context and a narrower observation view:
Perimeter surveillance cameras: observe a section of a site and examine an area of interest at a larger image scale.
Industrial facility monitoring: combine an overview of equipment or infrastructure with closer optical observation of selected areas.
Vehicle-mounted observation systems: provide two viewing modes within a thermal camera installation that meets the lens's mechanical requirements.
Detection and recognition distances should be assessed for the complete system, including the detector, target size, thermal contrast and atmospheric conditions. Use project-specific evaluation when selecting optics for a required observation distance.
IRLENS offers custom infrared lens design and manufacturing services for equipment developers whose requirements extend beyond an existing configuration.
Submit your detector datasheet and installation drawing for review of:
Optical coverage and spectral transmission requirements.
Mounting interfaces, housing dimensions and mechanical clearances.
Focus and FOV control arrangements.
Coating and environmental protection requirements.
Sample evaluation, inspection criteria and production quantities.
Customization feasibility, development scope and delivery arrangements are reviewed against the required performance and order forecast.
Established in 2014, Beijing IRLENS Optoelectronic Co., Ltd. develops and manufactures infrared lenses for OEM projects. Our company has developed more than 1,400 infrared lens designs and has an annual manufacturing capacity of 50,000 lenses across its infrared product portfolio.
Our capabilities include optical design, precision optical and mechanical processing, coating, assembly and inspection. Component measurement and lens imaging evaluation support the assessment of dimensional accuracy, transmission, focus and optical alignment.
For a recurring 50/150mm lens order, provide the initial quantity and expected annual demand. Discuss model-specific capacity, production lead time, inspection records and delivery scheduling with our team.
It is a dual field-of-view lens with specified 50mm and 150mm optical positions. A continuous zoom lens provides usable imaging across a range of intermediate focal lengths. Select the configuration that matches your camera's required viewing modes.
Compatibility requires evaluation of the detector's active area, pixel pitch, package and optical requirements. Share the exact detector model so IRLENS can review image circle coverage, focal plane positioning and the mechanical interface.
The focal length ratio is 3:1, but detection distance also depends on image quality, detector performance, target characteristics and the environment. Confirm observation performance using the complete camera system and a defined test method.
This page covers the optical lens assembly for thermal camera integration. Specify any required control hardware, cables or additional components in your inquiry so the quotation clearly defines the supply scope.
Send your evaluation quantity, planned production order and estimated annual demand. Ask our team to confirm sample arrangements, minimum order quantity, volume pricing and lead time for the agreed configuration.
Prepare your next thermal camera project with a lens selected around its optical, mechanical and procurement requirements. Include the following in your inquiry:
Company name and application.
Detector model, resolution and pixel pitch.
Required fields of view and operating conditions.
Mounting drawing and installation limits.
Sample quantity, first production order and annual demand.
Target delivery date and destination.
IRLENS can review the configuration and discuss the quotation, evaluation process and production requirements for your OEM supply program.
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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