Matrix Vision mvBlueGEMINI, Техническое руководство

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mvBlueGEMINI Technical Manual (EN) v 1.2.2
APPENDIX - CHOICE OF THE RIGHT LENS AND LIGHTING SYSTEM
49
10.4.2.1 Direction of the light
Figure 8 Direction of the light
Source: https://wiki.zimt.uni-
siegen.de/fertigungsautomatisierung/index.php/Beleuchtungstechniken_f%C3%BCr_die_industriell
e_Bildverarbeitung
According to the direction, there are different possible uses:
Direction Angle Applications Speciality
Background
lighting Bright
field

transparent and opaque as well as
flat or spatial parts

often in combination with diffuse or
telecentric lighting

suitable for testing bore holes

Preferred lighting system for
presence monitoring (binary
image)

uniformly bright, high-contrast
image

almost binary attributes
Dark
field

Transparent test objects like glass
or plastics

Very small distance between test
objects and lens possible

surface characteristics as
light details on a dark
background