Technical Documentation
opti-check
v2.8.2-K11
164/332
ipf electronic GmbH
Lüdenscheid, Germany
CIELab colour coordinates system
The cover of the sphere represents the maximum permissible colour deviation (ΔE) from the target colour
and changes as you make entries. This means that all colour values of the current colour that lie within the
ball are evaluated as
OK
.
The current colour is represented by a coordinate cross with dotted lines.
Current colour outside of the
target colour - Result:
NOK
Current colour inside of the
target colour - Result:
OK
NOTE
The scales of the CIELab colour coordinate system are divided into increments of 10 and
show up to 50.
CIELab colour coordinate system scale
Δ L = brightness (difference from target colour)
Δ a = red / green parts (difference from target colour)
Δ b = blue / yellow parts (difference from target colour)
Control buttons
You can move the CIELab coordinate system freely with the mouse and zoom with mouse wheel. There are
also buttons to stop the animation and tilt the CIELab colour coordinate system.
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