The LightIR 18-225mm f/4.0 lightweight continuous zoom lens features long-range capabilities of up to 16 km detection range. Featuring an innovative and unique optomechanical design and focus movement. The end result is the highest thermal imaging performance on the market, ideal for stabilized payloads in a variety of drones, UAVs, and handheld devices for SWaP applications.
Efficient compact optics design for max. volume use
Designed for MWIR 10 µm SXGA and 15 µm VGA Detectors
Additional drawings are not available for this product.
WFOV (18 mm)
Format
Pitch
640x512
1280x1024
15 µm
29.9°
10 µm
20.2°
39.1°
NFOV (225 mm)
Format
Pitch
640x512
1280x1024
15 µm
2.4°
10 µm
1.6°
3.3°
Specifications
Type
Continuous Zoom
Focal Length
18-225 mm
F/#
4.0
Spectral Range
3.4-4.9 μm
Cold Stop FPA Distance
19.4mm
Cold Stop Clear Aperture
Ø4.88mm (for 19.2-20.5mm CSH)
Back Focal Length
26.9mm in air (with 1+0.5mm Ge windows)
Minimum Focus Range
5 m Wide, 50 m Narrow
Nuc (by defocus)
Yes
Focus Mechanism
Motorized
Focus Time
<2 s
Zoom Mechanism
Motorized
Zoom Time
<5 s
Weight
324 g
Dimensions
Ø61.4 x 84 mm
Drive Voltage
12 V
Current Consumption
0.5 A average, 1.0 A peak
Communication Interface
RS422
Operating Temperature Range
-32ºC to +80ºC
Storage Temperature Range
-54ºC to +85ºC
Sealing
IP67 front element only
Wavelength Region
MWIR
Features
LightIR 18-225mm f/4.0 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)
LightIR 18-225mm f/4.0 Zoom Lens
High Performance Mid-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.
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.
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Ultra-High Velocity 