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NightCrawlIR Group Shot - A group of four high-performance infrared optical modules of varying sizes, each with a prominent front lens reflecting a vivid mountain landscape in shades of pink and purple. The modules feature exposed green circuit boards and wiring at the rear, highlighting their electronic integration for advanced thermal imaging or surveillance applications.

NightcrawlIR MWIR Lens Assemblies

The StingRay NightCrawlIR™ series is built to meet the demands of high-resolution applications and represents a revolution in cost and performance in the HD MWIR lens market.

Full Product Description
Wavelength:
3.4–5 µm
f/#:
f/4, f/5.5
Focal length:
16.5–330 mm, 18–430 mm, 21–420 mm, 33–660 mm, 42–850 mm, 100–1000 mm
Image Diameter:
12.3 mm, 16.4 mm
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Product description

Building on decades of heritage in the mid-wave infrared market, G&H Keene presents a no-compromise approach to conquering today’s demanding thermal imaging requirements.

Each lens in the series is ruggedized for tactical application with a sealed front lens flange interface and additional features for convenient payload installation.

Each NightcrawlIR lens is ruggedized for tactical application with a sealed front lens flange interface and additional features for convenient payload, enclosure, and dewar installation.

All lenses ship standard with our StingWare™ Controller featuring:

  • Metric zoom and focus mechanisms offering positioning precision and repeatability
  • Temperature adjusted focal length and object distance
    queries
  • Active athermalization functionalities

The controller utilizes integrated hardware on the lens cells to minimize system hysteresis to accurately and repeatedly report back exact focal length and object distances. This means never losing steps and no drift over temperature.

Key features

  • Aperture-specific configurations – no extenders (F/4)
  • IP67 at front lens
  • Temperature-adjusted metric zoom and focus mechanisms
  • Active thermalization functionalities
  • Configurable communications interface
  • Adaptable for power supplies from 12-24 V

Specifications

NameValue
Wavelength3.4–5 µm
f/#f/4, f/5.5
Focal length16.5–330 mm, 18–430 mm, 21–420 mm, 33–660 mm, 42–850 mm, 100–1000 mm
Image Diameter12.3 mm, 16.4 mm

Specifications

Part numberSR3823-A01 SR3822-A01SR3821-A01SR3820-A01
Focal length42–850 mm33–660 mm21–420 mm16.5–330 mm
F#4.0
Waveband3.4–5.0 µm
Image format<16.4 mm diagonal
Cold stop height19–22 mm
NFOV (horizontal)0.86° (1280, 10 μm pixel) 0.65° (640, 15 μm pixel)1.11° (1280, 10 μm pixel) 0.83° (640, 15 μm pixel)1.75° (1280, 10 μm pixel) 1.31° (640, 15 μm pixel)2.22° (1280, 10 μm pixel) 1.67° (640, 15 μm pixel)
WFOV (horizontal)17.3° (1280, 10 μm pixel) 13.0° (640, 15 μm pixel)22.0° (1280, 10 μm pixel) 16.6° (640, 15 μm pixel)33.9° (1280, 10 μm pixel) 25.8° (640, 15 μm pixel)42.4° (1280, 10 μm pixel) 32.4° (640, 15 μm pixel)
Average transmission %82%
BWD (in air)27.12 mm

  • NightcrawlIR SR3820

    NightCrawlIR lens SR2820 = Compact infrared optical module with a large coated lens featuring a subtle pink and yellow reflection. The rear section includes exposed green circuit boards with electronic components and connectors, indicating integration into precision thermal imaging or night vision systems.

  • NightcrawlIR SR3821

    NightCrawlIR lens SR2821 - Infrared optical lens module with a large coated front element reflecting pink and green hues. The unit has a black cylindrical housing and exposed circuit boards with wires and connectors on the rear, indicating its use in advanced imaging systems like thermal or night vision equipment.

  • NightcrawlIR SR3822

    NightCrawlIR lens SR2822 - Infrared camera lens assembly featuring a large, multi-coated front optic with a subtle pink and green hue. The cylindrical housing is matte black, with visible internal electronic components and wiring at the rear. Designed for thermal imaging or night vision applications.

  • NightcrawlIR SR3823

    NightcrawlIR lens SR3823 - Large infrared optical module with a prominent front lens reflecting a vivid pink and purple landscape. The rear section features exposed green circuit boards with wiring, indicating integration for high-performance thermal imaging or surveillance systems.

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