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
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
| Name | Value |
|---|---|
| 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 |
Specifications
| Part number | SR3823-A01 | SR3822-A01 | SR3821-A01 | SR3820-A01 |
|---|---|---|---|---|
| Focal length | 42–850 mm | 33–660 mm | 21–420 mm | 16.5–330 mm |
| F# | 4.0 | |||
| Waveband | 3.4–5.0 µm | |||
| Image format | <16.4 mm diagonal | |||
| Cold stop height | 19–22 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 SR3821
NightcrawlIR SR3822
NightcrawlIR SR3823
