The In-line Medium-wave Cooled Continuous Zoom Lens is designed to offer precise zooming capabilities in medium-wave infrared (MWIR) systems, especially those requiring high sensitivity and thermal imaging performance. These lenses are cooled for improved imaging quality, ensuring that your optical system performs optimally even under challenging conditions. Featuring a continuous zoom range, these lenses allow users to adjust the field of view (FOV) smoothly and accurately without losing focus, making them ideal for dynamic environments and real-time applications.
These lenses are suitable for a variety of fields, from defense and surveillance to industrial applications, providing versatility and high-performance imaging in the medium-wave infrared range.

Key Features
- Continuous Zoom: Provides smooth and precise zoom functionality, allowing for seamless adjustment of focal length while maintaining image clarity.
- Cooled Design: Built for use with cooled detectors, enhancing the sensitivity and clarity of thermal imaging systems.
- High Resolution: With pixel resolutions of 640×512, these lenses ensure clear, high-quality images, even at longer focal lengths.
- Versatile Focal Length Range: Offers a broad zoom range, from wide-angle views to detailed long-distance imaging, with flexible focal length options.
- Compact and Durable: Designed to withstand harsh conditions while maintaining consistent performance.
Applications
- Military & Defense: Used in surveillance, reconnaissance, and targeting systems, where both wide-angle and zoomed-in views are necessary for tactical operations.
- Industrial Inspection: Ideal for inspecting machinery, electrical equipment, and other industrial systems where both close-up and broad thermal imaging are required.
- Search and Rescue: Helps locate individuals or heat sources in low-visibility conditions, perfect for rescue operations in challenging environments.
- Environmental Monitoring: Useful for monitoring temperature variations in large areas, such as forests, wildlife tracking, and disaster areas.
Available Models
| Model | FL max (mm) | FL min (mm) | F-No. | PX | PY | Pitch |
|---|---|---|---|---|---|---|
| Z15300F4-615 | 300 | 15 | 4 | 640 | 512 | 15 |
| Z15330F4-615 | 330 | 15 | 4 | 640 | 512 | 15 |
| Z18275F55-615 | 275 | 18 | 5.5 | 640 | 512 | 15 |
| Z20200F4-615 | 200 | 20 | 4 | 640 | 512 | 15 |
| Z23450F4-615 | 450 | 22.5 | 4 | 640 | 512 | 15 |
| Z23450F4-615-B | 450 | 22.5 | 4 | 640 | 512 | 15 |
| Z30030F2-615 | 300 | 30 | 2 | 640 | 512 | 15 |
| Z30600F4-615 | 600 | 30 | 4 | 640 | 512 | 15 |
| Z38750F4-615 | 750 | 37.5 | 4 | 640 | 512 | 15 |
| Z39500F4-615 | 900 | 35 | 4 | 640 | 512 | 15 |
| Z40220F4-615 | 220 | 40 | 4 | 640 | 512 | 15 |
| Z45900F4-615 | 900 | 45 | 4 | 640 | 512 | 15 |
| Z90100F4-615 | 1000 | 90 | 4 | 640 | 512 | 15 |
Why Choose Our Optics?
Our In-line Medium-wave Cooled Continuous Zoom Lenses are engineered to provide unparalleled flexibility, high resolution, and exceptional imaging quality. Designed for precision and durability, these lenses ensure your optical systems are ready for a wide variety of demanding applications. Whether in military surveillance, industrial inspections, or environmental monitoring, our lenses offer the best in reliability and performance.
Ready to enhance your thermal imaging system? Contact us today for a consultation to find the perfect lens for your needs.
