
System Design
Camera calculator - Calculating the sensor exposure time
Typical values in practice for "normal applications" are mainly between 0.1 and 20 ms. Using CMOS sensors, shorter exposure times of up to 1 µs can be realised, too.
If the exposure time calculation gives greater values (e.g. 50 ms), it is of course possible to use a shorter exposure time (e.g. 5 ms) if there is sufficient light. Longer exposure times are also to be avoided as vibrations can also become visible in the image.
Calculation of sensor exposure time for translational part movements (conveyor belt) using area scan cameras
Please use this calculation method for linear part movements.

Note: Even when using the drop-down lists own values can be entered. Please use the first entry "user def."!
Sensor size in pixels (in the transport direction of conveyor belt): | |
Max allowed image blur in pixels: | |
Part size or field of view in mm:: | |
Conveyor belt speed in mm / sec: | |
Maximum exposure time for camera: | |
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We respect your privacy: we do not store any input, results or recipients. Send yourself your calculation with your own email program (MailTo-Link).
Further explanations and details on these calculations can be found in chapter Exposure time area scan cameras.
Calculating the sensor exposure time for the inspection of revolving objects using area scan cameras
The calculation of the proper exposure time is also possible with rotary movements, where cylindrical objects are inspected with an area scan camera. A possible example would be reading a data matrix code on a cylindrical component, which is rotated in front of the camera until the code has been read in by the machine vision system.

Please note that with larger angles for the arc of circle, perspective shortenings occur at the edge of the arc, which are not taken into account for the calculation. Changes in the magnification due to different working distances are also ignored.
Note: Even when using the drop-down lists own values can be entered. Please use the first entry "user def."!
Sensor size in pixels (in the transport direction of conveyor belt): | |
Max allowed image blur in pixels: | |
Field of view in mm: | |
Complete part diameter in mm: | |
Revolutions of part/ sec : | |
Total circumference of part: | |
Length of arc: | |
Height arc segment (> depth of field!): | |
Angle of arc segment: | |
Maximum exposure time for camera: | |
|
We respect your privacy: we do not store any input, results or recipients. Send yourself your calculation with your own email program (MailTo-Link).
Attention: Ideally, inspections of cylindrical objects are done with the help of line scan cameras. Further explanations can be found in chapter Line scan cameras.

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