Lensation Lens, BM4018S118C, 4 mm, 1/1.8″

Lensation BM4018S118C – 4 mm M12 S-Mount Lens for 1/1.8″ Sensor (3 MP, F1.8, Wide-Angle View)

The Lensation BM4018S118C is a compact 4 mm S-mount lens (M12) designed for high-resolution machine vision systems. With a fast F1.8 aperture, broad 126° diagonal field of view, and support for up to 3-megapixel sensors, it is a versatile lens ideal for robotics, surveillance, embedded systems, and intelligent traffic applications.

Product Specifications

• Model: BM4018S118C

• Brand: Lensation (Lensagon Series)

• Mount Type: S-Mount (M12)

• Focal Length: 4 mm

• Aperture: F1.8 (Fixed Iris)

• Image Sensor Compatibility: 1/1.8″ to 1/2″

• Resolution Support: Up to 3 MP

• Minimum Object Distance (MOD): 0.2 m

• Back Focal Length: 8 mm

• Field of View (FoV):

  • Diagonal: 126°

  • Horizontal: 101°

  • Vertical: 76°

• IR Correction: No

• IR Cut Filter: Yes

• Distortion: –45%

• Weight: 20 g

• Focus: Fixed

• Iris: Fixed

Key Benefits

• Ultra-Wide Angle View – 126° diagonal FoV ideal for large-area monitoring

• Fast F1.8 Aperture – Superior low-light sensitivity and performance

• Compact S-Mount Design – Optimized for space-limited embedded vision systems

• IR Cut Filter Included – Enhances performance in visible light spectrum

• Reliable Build – Fixed focus and iris for consistent imaging precision

Download Datasheet

Get the full technical details and mechanical drawings in the official PDF:

• Click here to download BM4018S118C Datasheet (Insert correct URL to file once hosted)

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