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

50mm DG Series Fixed Focal Length Lens

50mm Focal Length, #54-690

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Stock #54-690 3-5 days
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Iris Option:
Variable
Length (mm):
50.10
Horizontal Field of View, 1/2" Sensor:
29.1mm - 7.2°
Horizontal Field of View, 2/3" Sensor:
40.1mm - 9.9°
Filter Thread:
M39.0 x 0.50 (Female)
Maximum Diameter (mm):
40
Weight (g):
174
Horizontal Field of View, 1/3" Sensor:
21.9mm - 5.4°
Maximum Rear Protrusion (mm):
4
Horizontal Field of View, 1" Sensor:
58.2mm - 14.4°
Maximum Image Circle (mm):
21.60
Numerical Aperture NA, Object Side:
0.0227
Horizontal Field of View @ Max Sensor Format:
78.7mm - 19.3°
Horizontal Field of View, 4/3" Sensor:
78.7mm - 19.3°
Horizontal Field of View, 1.1" Sensor:
64.6mm - 15.9°
Number of Elements (Groups):
6 (4)
Horizontal Field of View, 1/1.8" Sensor:
32.8mm - 8.1°
Horizontal Field of View, 1/2.5" Sensor:
26.4mm - 6.6°
Type:
Fixed Focal Length Lens
Focal Length FL (mm):
50.00
Primary Magnification PMAG:
0.224
Maximum Sensor Format:
4/3"
Working Distance (mm):
240 - ∞
Mount:
C-Mount
Aperture (f/#):
f/4 - f/18
Coating:
λ/4 MgF2
Coating Specification:
λ/4 MgF2
Entrance Pupil Position (mm):
36.29
Horizontal Field of View, 1/4" Sensor:
16.4mm - 4.1°
Object Space Principal Plane (mm):
33.95
Image Space Principal Plane (mm):
-20.32
Field of View at Max Sensor Format:
Horizontal: 77mm - 19.4°
Vertical: 57.8mm - 14.6°
Diagonal: 96.1mm - 24°
Maximum Distortion (%):
1.01
Exit Pupil Position (mm):
-18.07
Lens Wavelength Range:
VIS
Imaging Lens Type:
Traditional Double-Gauss Style Lens
Storage Temperature (°C):
-20 to +60 For questions regarding operating temperature please contact our support team

Regulatory Compliance

RoHS 2015:
REACH 201:
Certificate of Conformance:

Product Family Description

  • Up to 4/3", C-Mount Lens
  • Up to 9 MegaPixels, 2.8µm Pixel Size Sensors
  • Double Gauss (DG) Lens with low distortion and high performance
  • 18mm to 75mm Focal Length

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.

#54-690, 50mm DG Series Fixed Focal Length Lens, Distortion Plot
#54-690, 50mm DG Series Fixed Focal Length Lens, Distortion Plot
#54-690, 50mm DG Series Fixed Focal Length Lens, Relative Illumination Plot
#54-690, 50mm DG Series Fixed Focal Length Lens, Relative Illumination Plot
#54-690, 50mm DG Series Fixed Focal Length Lens, Working Distance versus Field of View Plot
#54-690, 50mm DG Series Fixed Focal Length Lens, Working Distance versus Field of View Plot
#54-690, 50mm DG Series Fixed Focal Length Lens, Modulated Transfer Function (MTF) Plot, 240mm Working Distance, f4
#54-690, 50mm DG Series Fixed Focal Length Lens, Modulated Transfer Function (MTF) Plot, 240mm Working Distance, f4
#54-690, 50mm DG Series Fixed Focal Length Lens, Depth of Field Plot, 240mm Working Distance, f4
#54-690, 50mm DG Series Fixed Focal Length Lens, Depth of Field Plot, 240mm Working Distance, f4

Technical Information

 Dimensions
FL (mm) A (mm) B (mm) C (mm) D (mm) E (mm) F (mm)

Filter Thread

 (Dia. x Pitch)

18 48.0 32.3 4.6 40.0 - 2.5 M30.5 x 0.5
25 39.0 40.0 5.8 34.7 30.7 2.2 M30.5 x 0.5
35 45.0 50.1 11.6 40.0 42.1 0 M37.0 x 0.75
50 47.5 69.0 10.6 40.0 40.8 0 M39.0 x 0.5
75 54.0 116.2 19.2 46.0 67.7 0 M49.0 x 0.75