Medium-Wave Infrared Lenses for Precision Applications
Our MWIR (Medium-Wave Infrared, 3–5μm) lens series is designed for cooled detector systems including MCT (Mercury Cadmium Telluride) and InSb (Indium Antimonide) FPAs. The shorter wavelength provides superior spatial resolution and thermal sensitivity compared to LWIR systems.
We offer two main sub-categories of MWIR lenses:
- Cooled MWIR Lenses — For high-performance applications requiring maximum sensitivity
- Uncooled MWIR Lenses — Cost-effective solutions for industrial applications
Cooled MWIR Lenses
Cooled MWIR lenses are designed for applications that demand the highest thermal sensitivity and fastest response times. These lenses are paired with thermoelectrically cooled (or cryogenic) MCT or InSb detectors to achieve sub-millikelvin temperature resolution.
Key Features:
- Focal lengths: 25mm to 100mm+
- Fast aperture: F/2.0 or faster for maximum signal collection
- ZnSe (Zinc Selenide) optics for superior transmission in 3-5μm band
- Anti-reflection coating optimized for MWIR atmospheric window
- Typical applications: gas detection (methane, CO2), military targeting, scientific research
Uncooled MWIR Lenses
Uncooled MWIR lenses offer a cost-effective alternative for industrial thermography and monitoring applications where extreme sensitivity is not required. These lenses are optimized for use with uncooled microbolometer arrays operating in the 3-5μm atmospheric window.
Key Features:
- Focal lengths: 25mm to 75mm
- F/1.6 to F/2.0 aperture options
- Germanium optics with broadband AR coating
- Motorized focus options available
- Typical applications: industrial furnace monitoring, process control, border security
Typical Applications
Gas Detection
Natural gas and hydrocarbon leak detection using the unique spectral absorption signatures in the 3.3μm methane absorption band.
Industrial Thermography
High-precision temperature measurement for industrial processes, furnace monitoring, and quality control applications.
Military Targeting
Long-range target identification and tracking for defense and security applications requiring maximum thermal resolution.
Scientific Research
Laboratory and field research applications requiring precise thermal analysis and spectroscopic measurements.
Detector Compatibility Guide
Fixed Focal Length — 6 models
| Focal Length | F/# | Working Band | HFOV |
|---|---|---|---|
| 25mm | F2.0 | 3–5μm | 32.5° |
| 35mm | F2.0 | 3–5μm | 23.6° |
| 50mm | F2.0 | 3–5μm | 16.6° |
| 75mm | F2.0 | 3–5μm | 11.1° |
| 100mm | F2.0 | 3–5μm | 8.3° |
| 150mm | F2.8 | 3–5μm | 5.6° |
Motorized Zoom — 3 models
| Focal Range | F/# | Working Band | HFOV |
|---|---|---|---|
| 30~100mm Zoom | F2.0~F2.8 | 3–5μm | 27.2°~8.3° |
| 50~150mm Zoom | F2.0~F2.8 | 3–5μm | 16.6°~5.6° |
| 75~200mm Zoom | F2.5~F3.5 | 3–5μm | 11.1°~4.2° |
Fixed Focal Length — 8 models
| Focal Length | F/# | Working Band | HFOV |
|---|---|---|---|
| 25mm | F1.6 | 3–5μm | 34.2° |
| 35mm | F1.6 | 3–5μm | 24.8° |
| 50mm | F1.8 | 3–5μm | 17.5° |
| 60mm | F1.8 | 3–5μm | 14.6° |
| 75mm | F2.0 | 3–5μm | 11.7° |
| 100mm | F2.0 | 3–5μm | 8.8° |
| 120mm | F2.0 | 3–5μm | 7.3° |
| 150mm | F2.5 | 3–5μm | 5.9° |
* For custom specifications, contact us.
Need Custom MWIR Lenses?
We offer OEM/ODM services for specialized MWIR applications including custom focal lengths and detector interfaces.