Basler Lens C11-1220-12M-P#
- Fits all Basler cameras with a sensor size of up to 1.1"
- Metal housing
- Locking screws for iris and focus
- Aperture indicators on iris ring and lens barrel
- High contrast
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.
|Focal Length f'||12.39 mm ± 5 %|
|Aperture with Highest Resolution||F2.3|
|Image Circle||17.6 mm (1.1" format)|
|Focus Range||0.1 m to infinity|
|Optimum Working Distance||0.4 m|
|Relative Illumination at Full Aperture||58 %|
|Resolution||Designed for 140 LP/mm (3.57 µm pixel size, see Resolution versus Image Height)|
|MTF Measured in the Center at 90 LP/mm / 140 LP/mm (conditions: F2.0, polychromatic, 0.45 m working distance)||0.56 / 0.4|
|MTF Measured in the Corner at 90 LP/mm / 140 LP/mm (conditions: F2.0, polychromatic, 0.45 m working distance)||0.42 / 0.3|
|Optical Distortion||Typical -3.10 %|
|Angle of View, 1" Format||Horizontal: 56.1° |
|Angle of View, 1.1" Format||Horizontal: 61.2° |
|Wavelength Range||Visible (400–700 nm)|
|Back Focal Length, s'F||10.15 mm|
→ See Terminology (Basler Lenses).
|Flange Back||17.526 mm|
|Weight||Approx. 211.2 g|
→ Download the CAD/technical drawing for your Basler Lens.
Precautions, Mounting, and Cleaning (Basler Lenses)#
|Temperature During Operation||-20–60 °C (-4–140 °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)|
Resolution versus Image Height#
Conditions: f/2.0, polychromatic, 0.45 m working distance