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DSL401A-660-F2.8 4K Low-Distortion Lens – Day/Night Optimized Lens

4K low-distortion wide-angle lens with 3.2mm EFL, F2.8 aperture, and 660nm IR cut filter. Designed for day/night imaging on 1/2" sensors with a 92° HFOV.

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Product Number: 21781
Category: M12/M10/M8/M6 Mount Lens

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DSL401A-660-F2.8 4K Low-Distortion Lens - Day/Night Optimized Lens

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Product Summary

Low-distortion 4K lens with IR cut-off for day/night imaging, supporting 1/2″ sensors with a 92° HFOV.

The Sunex DSL401A-660-F2.8 is a 4K lens designed for low-distortion imaging in day/night environments, supporting up to 1/2" sensors. With an effective focal length of 3.2 mm and an aperture of F/2.8, this lens delivers exceptional clarity and wide field-of-view (92° HFOV) while minimizing image distortion. Its IR cut-off filter at 660 nm ensures accurate color reproduction during daylight conditions, making it ideal for high-resolution surveillance, machine vision, and industrial imaging applications. The durable M12x0.5 threaded mount provides stability for long-term use in demanding environments, while the 8 mm image circle ensures optimal sensor coverage.

DSL401A-660-F2.8 4K Low-Distortion Lens – Day/Night Optimized Lens Highlights

  • EFL: 3.2 mm
  • F/2.8 aperture
  • 92° HFOV
  • IR cut-off at 660 nm

Targeted Applications

  • Surveillance
  • Machine Vision
  • Industrial Imaging
  • Day/Night Applications

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
IR cut-off at 660nm
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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