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

$ 148.12

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Product Description

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:


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