ORCA-Lightning Digital CMOS Camera C14120-20P Instruction manual_Ver.2.5
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(5) Readout method of CMOS image sensor
The exposure and the readout method of CMOS image sensor which this camera adopts is
rolling shutter. In the rolling shutter, the exposure and readout are done four lines and the data of
each horizontal line is read by four lines of column amplifier and A/D simultaneously. As a result,
it achieves very fast readout speed while keeping very good low-noise performance.
Therefore, the exposure timing is different on one screen. However, even if the object moves
during the exposure, the affect of rolling shutter is very small.
Figure 5-1
(6) Modes for the image acquisition:
Camera readout modes, Camera operation modes, Readout methods
This camera has various modes for the image acquisition. The modes are set in the following
functions. (Refer to 10 “CAMERA SETTINGS AND FUNCTIONS”)
- Camera readout modes
: How to the readout of image
- Camera operation modes : How to the image acquiring of the camera
- Readout methods
: Units for reading out images
[Relationship diagram]
(Camera readout modes)
(Camera operation modes)
(External trigger modes)
Normal Area Mode
Free running mode
External trigger mode
Edge trigger mode
Start trigger mode
Global reset edge trigger mode
Level trigger mode
Global reset level trigger mode
Synchronous readout trigger mode
Lightsheet
Readout Mode
Free running mode
External trigger mode
Edge trigger mode
Start trigger mode
