Lensation Lens, BM4018S118, 4 mm, 1/1.8″

Lensation BM4018S118 – 4 mm S-Mount Lens (F1.8, 1/1.8″ Sensor, 3 MP, Ultra-Wide FoV, IR-Corrected)

The Lensation BM4018S118 is a 4 mm S-Mount lens (Lensagon series) designed for high-performance applications requiring a wide field of view, high light sensitivity, and compatibility with compact image sensors. With a fast F1.8 aperture and support for 1/1.8″ sensors up to 3 megapixels, this lens is ideal for embedded vision, robotics, automotive, and surveillance systems.

Product Specifications

• Model: BM4018S118

• Brand: Lensation (Lensagon Series)

• Mount Type: S-Mount (M12)

• Compatible Sensor Format: 1/1.8″ to 1/2″

• Focal Length: 4 mm

• Aperture: F1.8 (Fixed Iris)

• Resolution Support: Up to 3 MP

• Minimum Object Distance (MOD): 0.2 m

• Back Focal Length: 8 mm

• Chief Ray Angle (CRA): 10°

• Field of View (FoV):

  • Diagonal: 126°

  • Horizontal: 101°

  • Vertical: 76°

• Optical Distortion: –45%

• IR Correction: Yes

• Iris: Fixed

• Focus: Fixed

• Weight: 19 g

Key Benefits

• Ultra-Wide Field of View – Diagonal FoV up to 126° for wide-area monitoring

• High Aperture F1.8 – Excellent low-light performance

• IR-Corrected Optics – Enables sharp imaging in both visible and near-infrared ranges

• Compact M12 Format – Ideal for space-constrained designs in robotics and smart vision

• Low Distortion Design – Suitable for intelligent imaging applications

Download Datasheet

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

• Click here to download BM4018S118 Datasheet

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