FoldIR 40-450 mm f/3.6 Motorized MWIR Zoom VGA Imaging Lens
FoldIR 40-450 mm f/3.6 Motorized MWIR Zoom VGA Imaging Lens
Folded-Optics Continuous Zoom Lens for advanced unmanned aerial systems IR cameras
Introducing the FoldIR 40-450mm f/3.6 continuous zoom lens, featuring Ophir’s innovative folded-optic design for a lightweight, compact form while maintaining long optical lengths and enhanced tolerance sensitivity. Optimized for MWIR 10μm VGA sensors, it is ideal for space-constrained applications such as unmanned aerial systems (UAS) and gimbal-mounted electro-optical systems, fitting 11” gimbals and other compact platforms. With a detection range exceeding 21 km, it includes a built-in mechanical shutter for non-uniformity correction (NUC).
Key features
- Efficient folded optics design for minimum volume use
- Physical shutter for mechanical NUC performance
- Designed for MWIR 10μm VGA sensors
- Ideal for 11" aerial gimbals
- Detection range exceeds 21km
- Requires export license See All Features
HFOV [deg]
FoldIR 30-450mm f/3.4 Detection, Recognition & Identification (DRI) Range
WFOV (40mm)
| Format | ||
|---|---|---|
| Pitch | 640x480 | |
| 10 µm | 8.9° | |
NFOV (450mm)
| Format | ||
|---|---|---|
| Pitch | 640x480 | |
| 10 µm | 0.85° | |
Features
FoldIR 40-450mm f/3.6 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!
The calculations used here are based on the “Johnson Criteria”. According to the Johnson Criteria, the minimum resolution, pixels on target, required to achieve a 50% probability for an observer to discriminate an object are:
- Detection: An object is present – 2 pixels on target (Lower Bar)
- Recognition: discern the type of object, a human vs. a vehicle – 8 pixels on target (Middle Bar)
- Identification: discern specific objects, a man vs. a woman, a car model – 12.8 pixels on target (Upper Bar)
Resources
Data Sheets
FoldIR 40-450mm f/3.6 Data Sheet(298.4 kB, PDF) FoldIR 40-450mm f/3.6 Product Overview(1.2 MB, PDF)
