![background image](http://html1.mh-extra.com/html/festo/sbo-q-series/sbo-q-series_manual_2283436032.webp)
1. System summary
1−14
Festo P.BE−SBO−Q−EN en 0702a
Ascertaining the
appropriate focal depth
The somewhat more expensive lenses with adjustable aper
ture angle (zoom) enable you to adapt the field of vision to
your requirements. Lenses with fixed focal depth are less
expensive. Whether a lens is suitable depends on:
the smallest possible distance where image is still sharp
(Minimum Object Distance MOD)
focal depth
luminous intensity
the permissible distortion.
The object distance, i.e. the distance between the camera and
the object to be photographed, can be calculated according
to the laws of optics. Note that the following calculation for
mula describes the distance between the so−called main level
and the object to be represented. With a thin lens element the
main level is the centre of the lens. With a lens, the position of
the main level cannot be so easily determined. As an estimate,
you can assume the centre of the lens to be the main level.
Formula
Description
g = f * (G : B + 1)
g : Object distance (work distance)
G : Object size (size of field of vision)
f : Focal depth
B : Picture or sensor size
1)
1)
The horizontal dimension of the sensor is:
for type SBO...−Q−R1... 6.61 mm
for type SBO...−Q−R2... 8.6 mm
Tab.1/7: Calculation formula
Содержание SBO Q Series
Страница 2: ......
Страница 8: ...Contents and general instructions VI Festo P BE SBO Q EN en 0702a ...
Страница 19: ...System summary 1 1 Festo P BE SBO Q EN en 0702a Chapter 1 ...
Страница 37: ...Fitting 2 1 Festo P BE SBO Q EN en 0702a Chapter 2 ...
Страница 45: ...Installation 3 1 Festo P BE SBO Q EN en 0702a Chapter 3 ...
Страница 60: ...3 Installation 3 16 Festo P BE SBO Q EN en 0702a ...
Страница 61: ...Commissioning 4 1 Festo P BE SBO Q EN en 0702a Chapter 4 ...
Страница 114: ...4 Commissioning 4 54 Festo P BE SBO Q EN en 0702a ...
Страница 115: ...Diagnosis and error treatment 5 1 Festo P BE SBO Q EN en 0702a Chapter 5 ...
Страница 122: ...5 Diagnosis and error treatment 5 8 Festo P BE SBO Q EN en 0702a ...
Страница 123: ...Technical appendix A 1 Festo P BE SBO Q EN en 0702a Appendix A ...
Страница 146: ...A Technical appendix A 24 Festo P BE SBO Q EN en 0702a ...
Страница 147: ...Index B 1 Festo P BE SBO Q EN en 0702a Appendix B ...
Страница 148: ...B Index B 2 Festo P BE SBO Q EN en 0702a Contents B Index B 1 B 1 Index B 3 ...
Страница 156: ...B Index B 10 Festo P BE SBO Q EN en 0702a Z Zoom 1 14 ...