LightIR 15-75 mm f/1.2 LWIR Motorized Continuous Zoom Imaging Lenses
LightIR 15-75 mm f/1.2 LWIR Motorized Continuous Zoom Imaging Lenses
Low-SWaP, high-performance LWIR lens for aerial and handheld thermal imaging systems
The LightIR 15-75mm f/1.2 motorized focus imaging lens is optimized for 10-12 micron pixel size uncooled LWIR cameras. This lens weighs only 320 g, making it the most lightweight continuous zoom lenses on the market, with up to 7.1 km detection range.
- Most lightweight, compact, continuous zoom lenses on the market at 325 g
- Ideal for low-SWaP applications
- Optimized for 10-12 micron pixel size uncooled LWIR cameras
- Maintains sharp focus over the entire motorized 15-60 mm zoom range
- LWIR High-durability and hard-carbon AR coatings for 8-12 µm
- Vehicle detection range exceeding 7 km See All Features
HFOV [deg]
WFOV (15 mm)
| Format | |||
|---|---|---|---|
| Pitch | 320x240 | 640x480 | |
| 17 µm | 20.9° | 43.4° | |
| 12 µm | 14.7° | 29.9° | |
| 10 µm | 24.8° | ||
NFOV (75 mm)
| Format | |||
|---|---|---|---|
| Pitch | 320x240 | 640x480 | |
| 17 µm | 4.1° | 8.2° | |
| 12 µm | 2.9° | 5.8° | |
| 10 µm | 4.9° | ||
Features
LightIR 15-75mm f/1.2 Detection, Recognition & Identification (DRI) Range<br>For 12μm pixel size detector
* Assumptions: 50mK NETD (f/1.0) for LWIR uncooled detectors | 30Hz frame rate | 50% detection probability | 0.2km-1 atmospheric attenuation coefficient | human ΔT = 5°C | vehicle ΔT = 2°C
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)
High Performance Long Wave Focal Plane
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.
High-durability and Hard-carbon AR Coatings
Our highly abrasion-resistant, anti-reflective advanced optical coatings include several types of Hard Carbon coatings which provide maximum durability, energy transmission & minimal reflection. Our innovative coating technologies include:
- Physical Vapor Deposition (PVD) – Thermal heating and electron gun
- Ion Assisted Deposition (IAD) – Ion gun
- Plasma Enhanced Chemical Vapor Deposition (PECVD) for DLC coatings
Passive Athermalized Lens Assembly
Our IR imaging lens assemblies incorporate passive athermalization of the lenses and opto-mechanical system to maintain the highest imaging performance over the full operating temperature range. We use advanced materials that enable unique athermalization properties and optomechanical designs that effectively compensate for optical variations over a wide temperature range.
Applications
Commercial
Defense
Resources
Application Notes
Drone Infrared Imaging UAV Infrared Imaging Hand Held Thermal Imagers and Weapon Sights Situational Awareness Systems (SAS) Naval Thermal Imaging Maritime Thermal Imaging Security, Surveillance & Homeland Security
Data Sheets
LightIR 15-75 mm f/1.2 Data Sheet(225.8 kB, PDF)
Drawings & CAD
680386 Interface Control Document(146.3 kB, PDF)
Literature
High Performance Optics for UAV Payloads and Drones(1.1 MB, PDF) LWIR Optics Optimized for 10-12 micron Pitch Cameras(1.7 MB, PDF) IR Lightweight and Compact Zoom Lenses(2.1 MB, PDF)
