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DSL401A-NIR-F2.8 4K Low-Distortion Lens – NIR-Enhanced for Day/Night Imaging

4K wide-angle lens optimized for NIR imaging, 3.2mm EFL, F2.8 aperture, and no IR cut filter. Supports 1/2" sensors with a 92° HFOV.

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Product Number: 21782
Category: M12/M10/M8/M6 Mount Lens

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DSL401A-NIR-F2.8 4K Low-Distortion Lens - NIR-Enhanced for Day/Night Imaging

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Product Summary

NIR-enhanced 4K lens for low-distortion imaging in day/night environments, supporting 1/2″ sensors.

The Sunex DSL401A-NIR-F2.8 is a 4K lens optimized for near-infrared (NIR) imaging in day/night environments, designed for use with 1/2" sensors. Featuring an effective focal length of 3.2 mm, F/2.8 aperture, and 92° horizontal field-of-view (HFOV), this lens delivers superior performance in low-light and NIR conditions without the use of an IR cut filter. Its low-distortion design ensures high-quality imaging for a wide range of applications, including surveillance, machine vision, and industrial imaging systems. The M12x0.5 threaded mount and 8 mm image circle provide compatibility with a variety of sensor systems and ensure reliable, high-resolution imaging in both visible and near-infrared spectrums.

DSL401A-NIR-F2.8 4K Low-Distortion Lens – NIR-Enhanced for Day/Night Imaging Highlights

  • EFL: 3.2 mm
  • F/2.8 aperture
  • 92° HFOV
  • No IR cut filter
  • NIR-optimized performance

Targeted Applications

  • Surveillance
  • Low-Light Imaging
  • Machine Vision
  • Industrial Imaging

Product Specifications

ApertureAperture
2.8
Back Focal Length [mm]Back Focal Length [mm]
–
Distortion [%]Distortion [%]
29
Filter ThreadFilter Thread
M12x0.5
Focal Length [mm]Focal Length [mm]
3.2
Focus Type
Fixed focal
Field of View Diagonal [°]Field of View Diagonal [°]
–
Field of View Horizontal [°]Field of View Horizontal [°]
92
Field of View Vertical [°]Field of View Vertical [°]
–
Image Circle [mm]Image Circle [mm]
8
Filter TypeFilter Type
no IR-cut filter
Lens FeaturesLens Features
Low Distortion
ManufacturerManufacturer
Sunex
Material BarrelMaterial Barrel
–
Material LensesMaterial Lenses
–
Max. Chief Ray Angle [°]Max. Chief Ray Angle [°]
–
MountMount
M12
Product TypeProduct Type
Miniature Lens
Resolution [MP]Resolution [MP]
8
Sensor Size [inch/mm]Sensor Size [inch/mm]
1/2 inch
Target ApplicationTarget Application
–
Target SensorTarget Sensor
–
Total Track Length [mm]Total Track Length [mm]
–

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