NightcrawlIR MWIR Lens Assemblies

Utilizing unique aperture specific fore optics and a modular base to maximize performance, Nightcrawlir lenses are purpose-built from the ground up for the demands of high resolution applications.

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Product description

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
Ruggedized for tactical application
IP67 at front lens
Optional DLC coating
19-22 mm cold shield heights supported
Supports up to 16.4 mm HD image formats
StingWare™ Controller included on all lenses
Metric zoom and focus mechanisms
Athermal compensation
Fully configurable controller interface
Multiple communication protocols
Adaptable for power supplies from 12-24 V

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