Dual-FOV
Infrared Optics for OEM Integration and Volume Procurement
IRLENS manufactures uncooled LWIR dual FOV lenses for thermal camera OEMs, equipment manufacturers, system integrators and infrared optics distributors. Switch between a wider scene view and a narrower view for closer observation, with focal length combinations selected around your detector and imaging requirements.
Our series includes configurations from 20/60mm to 60/180mm, giving procurement and engineering teams multiple options for developing thermal imaging products. Choose an existing model or discuss a custom optical and mechanical design for your production program.
Part of our Multiple FOV IR Lens range, these lenses support applications requiring two distinct optical viewing modes.
Start with the focal length pair and F-number, then confirm detector coverage, spectral band and installation requirements for the selected model. The following configurations are listed in our current category.
| Focal Length Pair | F-Number Pair |
|---|---|
| 20/60mm | F0.9 / F1.2 |
| 25/60mm | F0.9 / F1.2 |
| 25/70mm | F0.95 / F1.1 |
| 25/90mm | F1.0 / F1.2 |
| 29.2/88mm | F0.88 / F1.0 |
| 40/150mm | F1.0 / F1.2 |
| 50/100mm | F1.0 / F1.14 |
| 50/150mm | F0.95 / F1.15 |
| 60/180mm | F0.9 / F1.2 |
Each row represents two discrete focal lengths. Actual horizontal and vertical fields of view depend on the detector’s active dimensions. Final specifications and supply configuration are confirmed for the selected model.
Need help shortlisting lenses? Send your detector model, required wide and narrow fields of view, and expected order quantity for an engineering review.
The shorter focal length provides broader coverage on the same detector, helping operators locate areas of interest. Switching to the longer focal length narrows the field of view and increases the image scale of distant objects. This combination supports thermal systems that alternate between scene observation and closer inspection.
A dual field of view lens changes the optical image projected onto the detector. Digital zoom enlarges an existing image. For equipment requiring two defined viewing modes, dual-FOV optics provide a practical basis for optical magnification and system configuration.
A larger separation between focal lengths creates a greater change in scene coverage. The best combination depends on the detector, observation distance and installation envelope. Review lens diameter, length and weight alongside optical requirements before selecting a model for production.
Beijing IRLENS Optoelectronic Co., Ltd. brings infrared optical development and manufacturing together for OEM customers. Established in 2014, our company has developed more than 1,400 infrared lens designs.
50,000 lenses per year: annual manufacturing capacity across our infrared lens portfolio.
10,000 m² of built-up space: facilities supporting optical and mechanical production.
More than 120 employees: a team supporting development, manufacturing and customer projects.
Integrated production capabilities: optical design, precision machining, infrared component processing, coating, assembly and inspection.
Our inspection and imaging evaluation capabilities cover component geometry, optical transmission, image quality, optical-axis consistency and focus performance under different temperatures. For repeat orders, discuss the approved specification and required acceptance criteria with our team before production.
Share your annual demand and delivery schedule so we can assess model-specific capacity and supply arrangements for your program.
An existing lens is a useful starting point when its optical and mechanical specifications fit your camera platform. When integration requires changes, IRLENS can evaluate a custom design through our infrared lens design and manufacturing services.
Requirements for engineering review can include:
Focal length pair, F-number and required spectral transmission.
Detector format, pixel pitch and image circle coverage.
Mounting threads, flange dimensions and back focal distance.
Housing envelope, lens weight and installation clearances.
Focus adjustment, FOV switching and motor-control requirements.
Coatings, temperature range and environmental protection.
Provide your detector datasheet and interface drawing early. This helps establish the scope of customization, prototype evaluation and production planning before you commit to a volume order.
| Selection Factor | What to Confirm |
|---|---|
| Detector compatibility | Sensor model, resolution, pixel pitch and active imaging area. |
| Field of view | Required horizontal and vertical coverage in both optical positions. |
| Optical performance | F-number, spectral band, transmission and image quality requirements. |
| Mechanical integration | Mount, back focal distance, maximum diameter, length and weight. |
| Focus and switching | Control method, switching time and repeatability requirements. |
| Operating environment | Temperature, moisture, dust, vibration and protective window conditions. |
Detector matching is specific to each lens. For example, our published 25/90mm configuration is specified for a 640 × 512 detector with 17 µm pixels, while the 40/150mm configuration is specified for a 1024 × 768 detector with 12 µm pixels. Confirm compatibility with your exact camera core during selection.
Security and perimeter monitoring: combine broader scene observation with a narrower view of an area of interest.
UAV thermal payloads: evaluate dual viewing modes for aerial inspection and observation, subject to payload size and weight limits.
Industrial inspection equipment: survey equipment or infrastructure, then examine selected areas at a larger image scale.
Mobile observation platforms: integrate two optical viewing modes into vehicle-mounted or portable professional systems.
Observation performance depends on the complete lens-and-detector system, target characteristics and operating conditions. Share your application requirements so lens selection can be assessed against the intended use.
For recurring purchases, agree the technical configuration and commercial requirements before placing the production order.
Define the requirement. Share detector details, optical targets, installation limits and annual demand.
Review the lens proposal. Confirm the model or custom development scope, drawings and acceptance criteria.
Evaluate the configuration. Agree sample arrangements and validate imaging, mounting, focus and FOV switching in your system.
Confirm the production order. Finalize quantities, pricing, lead time, inspection documentation and delivery schedule.
Include forecast demand alongside your initial quantity when requesting a quotation. This gives our team a clearer basis for discussing repeat supply and production scheduling.
It identifies lenses intended for use with uncooled infrared detectors. The products in this category are optical lens assemblies for camera integration. Detector selection and imaging electronics are addressed as part of the customer’s complete thermal camera design.
A dual-FOV lens provides two specified optical focal lengths. A continuous zoom lens supports imaging through a range of intermediate focal lengths. Choose according to whether your equipment needs two repeatable viewing modes or continuously variable framing.
Yes. The field of view depends on focal length and detector active dimensions. Different sensor formats can therefore produce different scene coverage with the same lens. Resolution, pixel pitch and lens image circle coverage should be reviewed together.
Yes. IRLENS provides custom infrared lens development and manufacturing. Submit the required optical performance, interface drawings, evaluation quantity and expected annual demand so the team can review feasibility and production requirements.
Request a quotation for the selected configuration and quantity. Ask our sales team to confirm the minimum order quantity, volume pricing, sample arrangements and production lead time, including any custom engineering or tooling requirements.
Build your procurement request around the camera you are developing and the quantities you expect to purchase. Send IRLENS:
Your company name and application.
Detector model, resolution and pixel pitch.
Preferred focal length pair or required fields of view.
Mechanical drawing and any customization requirements.
Evaluation quantity, first production order and estimated annual demand.
Target delivery date and destination.
Our team can evaluate a suitable configuration and discuss the technical and commercial requirements for your OEM or volume supply project.
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