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TECHSPEC® components are designed, specified, or manufactured by Edmund Optics. Learn More

18mm DG Series Fixed Focal Length Lens

18mm Focal Length, #54-857

18mm Focal Length, #54-857

Stock #54-857
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Focal Length FL (mm):
Maximum Sensor Format:
Horizontal Field of View @ Max Sensor Format:
159.2mm - 38.4°
Aperture (f/#):
f/4 - f/12
Working Distance (mm):
210 - ∞
λ/4 MgF2
Distortion (%):
<2 @ 400mm WD
Horizontal Field of View, 1" Sensor:
159.2mm - 38.4°
Horizontal Field of View, 1/1.8" Sensor:
88.8mm - 22.0°
Horizontal Field of View, 1/2" Sensor:
78.8mm - 19.6°
Horizontal Field of View, 1/2.5" Sensor:
70.2mm - 17.5°
Horizontal Field of View, 1/3" Sensor:
59.2mm - 14.8°
Horizontal Field of View, 1/4" Sensor:
44.4mm - 11.1°
Horizontal Field of View, 2/3" Sensor:
108.7mm - 26.8°
Filter Thread:
M30.5 x 0.5 (Female)
Primary Magnification PMAG:
0X - 0.074X
Iris Option:
Fixed Focal Length Lens
Weight (g):

Regulatory Compliance

RoHS 2015:
REACH 201:

Product Family Description

  • Double Gauss (DG) Design for Low Distortion, <0.3%
  • Supports Up to 4/3" Sensors
  • Low-Profile Static Housing for Machine Integration
  • Ideal for High Resolution Cameras

TECHSPEC® DG Series Fixed Focal Length Lenses utilize a Double Gauss design to provide high-performance, low distortion, compact size, and exceptional value, while exceeding the performance of typically available fixed focal length lenses. These lenses feature a mechanical design that allows the focusing movement to be motorized by the user, yields image resolution greater than 100 lp/mm, and have a standard C-Mount. For most applications, the camera-lens combination can be attached to workstations using the ¼-20 mount provided on the camera. TECHSPEC® DG Series Fixed Focal Length Lenses include focus ring, manual iris, and set screws to facilitate a low profile integration in machine vision applications. Typical applications for the DG Series lenses include machine vision, assembly-line integration, and measurement and image analysis.

Note: Industrial Boom Stands are recommended for building vibration-free workstations.

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