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Basler Lens C23-2518-5M-P#

Basler Premium C-mount lens with a fixed focal length of 25 mm, aperture range from F1.8–F16, and a resolution of 5 MP.

Basler Lens C23-2518-5M-P F1.8 f25.0 mm

Key Features#

  • Fits all Basler cameras with a sensor size of up to 2/3"
  • Metal housing
  • C-mount
  • Locking screws for iris and focus
  • Aperture indicators on iris ring and lens barrel
  • High contrast

Info

The technical data shown in the following sections are nominal design values. The real values of the delivered products can deviate from the nominal design values.

General Specifications#

C23-2518-5M-P
Order Number 2200000571
Focal Length f' 24.9 mm ± 5 %
Aperture Range F1.8–F16
Aperture with Highest Resolution F2.4
Image Circle 11 mm (2/3" format)
Focus Range 0.2 m to infinity
Optimum Working Distance 0.5 m
Relative Illumination at Full Aperture 63 %
Resolution Designed for 147 LP/mm (3.40 µm pixel size, see Resolution versus Image Height)
MTF Measured in the Center at 90 LP/mm / 140 LP/mm (conditions: F1.8, polychromatic, 0.45 m working distance) 0.54 / 0.43
MTF Measured in the Corner at 90 LP/mm / 140 LP/mm (conditions: F1.8, polychromatic, 0.45 m working distance) 0.51 / 0.4
Optical Distortion Typical 0.92 %
Angle of View, 1/1.8" Format Horizontal: 16.3°
Vertical: 12.1°
Angle of View, 2/3" Format Horizontal: 20.0°
Vertical: 15.0°
Wavelength Range Visible (400–700 nm)
Back Focal Length, s'F 13.20 mm

→ See Terminology (Basler Lenses).

Mechanical Specifications#

C23-2518-5M-P
Flange Back 17.526 mm
Mount C-mount
Weight Approx. 62.0 g
Focus/Iris Operation Manual

Lens Dimensions#

Basler Lens C23-2518-5M-P

→ Download the CAD/technical drawing for your Basler Lens.

Precautions, Mounting, and Cleaning (Basler Lenses)#

→ See Precautions, Mounting, and Cleaning (Basler Lenses).

Environmental Requirements#

Temperature During Operation -10–50 °C (14–122 °F)
(For best results, adjust the focus when a steady operating temperature has been reached.)
Humidity During Operation 10–90 % relative humidity, non-condensing
Temperature During Storage -20–60 °C (-4–140 °F)

Performance Chart#

Resolution versus Image Height#

Conditions: f/1.8, polychromatic, 0.45 m working distance

Resolution versus Image Height