[Procedure]
Like the image in the previous step, place an object with some letters on the position where the workpiece is to be placed.
Adjust the angle and position of the camera. Also adjust the lens aperture and focus so that the letters on the object can be seen clearly.
It is convenient to press 'LIVE' and perform the adjustment because the images snapped by the camera appear in a sequence.
If you press 'LIVE', press 'STOP' after completing the adjustment.
Install the camera so that it is normal to the surface of the table, so that the entire area where the workpiece is placed is in the field of view.
Use the aperture ring of the lens ((1) in the figure on the right) and [Temps d'exposition] in the setting screen to adjust the brightness.
The F-numbers are printed on the aperture ring. The larger the F-number is, the darker the image becomes; the smaller the number is, the brighter the image becomes. By setting a larger F-number, the depth of focus becomes deeper, and it is easier to obtain good focus.
In addition, brightness of an image can be adjusted by the exposure time. The longer the exposure time is, the brighter the image becomes; the shorter the time is, the darker the image becomes.
Use the focus ring of the lens ((2) in the figure on the right) to adjust the focus. The distance to be focused is printed on the focus ring. Adjust the focus, referring to it as a guide.
Caution
In some lenses, layout of the focus ring and the aperture ring may differ from the figure on the right. Also, the distance to be focused or F-number may not be printed as in the figure.
Perform these adjustments after moving the robot to P[1]. You can change P[1] at this step.
Additional
If an LED light is used, adjust the brightness of the LED light as well when adjusting the brightness.
To minimize the effects of changes in ambient light, try increasing the brightness of the LED light, as well as the overall brightness of your image using the lens aperture and exposure time.
The adjustment completes when the letters within the camera FOV can be captured clearly.