New LightIR 18-225mm f/3.6 Motorized MWIR Zoom Imaging Lens

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Overview

Low-SWaP Continuous Zoom Lens Designed for MWIR 10μm VGA Detectors

The Ophir LightIR 18-225mm MWIR f/3.6 continuous zoom lens is a compact thermal imaging lens, optimized for 10μm pitch VGA FPA (focal plane array) detectors. It weighs only 300gr, which makes it 25% lighter than existing similar lenses. It features a compact optics design, with reduced optical elements that significantly decrease the length and weight of the lens, and therefore, the overall size and weight of the optical system in which it is incorporated.

With its disruptive combination of SWaP capabilities, detection range exceeding 15km, rugged design, and cost-effective pricing, the LightIR 18-225mm f/3.6 continuous zoom lens is an enabler for advanced drone, tactical UAV IR cameras, and micro-/mini tactical payloads in the commercial, homeland security, and defense markets.

Motorized Continuous Zoom

Weight 300gr
Dimensions Ø63 x 84.6mm
Detection range 15.5km
Designed for MWIR 10µm VGA detectors
Ideal for mini/micro tactical payloads

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Products

		Compare	Model	Compatibility	sortOrder	rankScore	ranking	Drawings, CAD & Specs		Format	Pixel Pitch	Focal Length	F/#	Availability	Featured Item	Price		Brand
		New 680442-001 LightIR 18-225mm f/3.6 LightIR 18-225mm f/3.6, High Durability Contact Us	New 680442-001 LightIR 18-225mm f/3.6 LightIR 18-225mm f/3.6, High Durability	UNIVERSAL	0.0	1.0	0.0		0.0	640x512	10μ	18-225mm	3.6	Contact Us	New			Ophir
		New 680442-002 LightIR 18-225mm f/3.6 LightIR 18-225mm f/3.6, Low Reflection Hard Carbon Contact Us	New 680442-002 LightIR 18-225mm f/3.6 LightIR 18-225mm f/3.6, Low Reflection Hard Carbon	UNIVERSAL	0.0	1.0	0.0		0.0	640x512	10 µm	18-225mm	3.6	Contact Us	New			Ophir

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HFOV [deg]

WFOV (18mm)

	Format
Pitch	640x512
10 µm	20º

NFOV (225mm)

	Format
Pitch	640x512
10 µm	1.6º

HFOV [deg]

WFOV (18mm)

	Format
Pitch	640x512
10 µm	20º

NFOV (225mm)

	Format
Pitch	640x512
10 µm	1.6º

Specifications

Type

Continuous Zoom
Focal Length

18-225mm
F/#

3.6
Cold Stop FPA Distance

12mm
Cold Stop Clear Aperture

Ø3.34mm
Back Focal Length

18.5mm in air
Minimum Focus Range

WFOV:5m;NFOV:50m;
Nuc (by defocus)

Blur to 7mm diameter , Optional: mechanical shutter
Focus Mechanism

Motorized. Adjustable

Focus Time

<2 sec.
Zoom Time

<5 sec.
Drive Voltage

12V
Current Consumption

< 0.5A average, 1.0A peak
Communication Interface

RS422
Operating Temperature Range

-32ºC to +80ºC
Storage Temperature Range

-54ºC to +80ºC
Sealing

IP67 front lens only
Wavelength Region

MWIR

Specifications

Type

Continuous Zoom
Focal Length

18-225mm
F/#

3.6
Cold Stop FPA Distance

12mm
Cold Stop Clear Aperture

Ø3.34mm
Back Focal Length

18.5mm in air
Minimum Focus Range

WFOV:5m;NFOV:50m;
Nuc (by defocus)

Blur to 7mm diameter , Optional: mechanical shutter
Focus Mechanism

Motorized. Adjustable

Focus Time

<2 sec.
Zoom Time

<5 sec.
Drive Voltage

12V
Current Consumption

< 0.5A average, 1.0A peak
Communication Interface

RS422
Operating Temperature Range

-32ºC to +80ºC
Storage Temperature Range

-54ºC to +80ºC
Sealing

IP67 front lens 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)

Features

LightIR 18-225mm f/4.0 Detection, Recognition & Identification (DRI) Range

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)