RED
GREEN
BLUE
RED
GREEN
BLUE
Various functions to ensure the best mark sensing.
Sensing modes can be selected depending on the application.
Mark mode
Automatic optimal LED selection function
The 3 colors of the R
•
G
•
B LEDs are optimally selected according to the color combination. With the LX-100’s Mark mode, the built-in
‘Automatic optimal LED selection function’ automatically selects the LED for the largest contrast (S / N ratio) between the mark and base (non-
mark area) to ensure optimal sensing. For more stable detection, the sensor makes selection according to the contrast and not according to
the reflected light variation between the mark and base (non-mark area).
With mark sensing, the larger the received light
variation is, the easier sensing becomes. Also, the
higher the received light ratio (contrast) is, the
more sensing is stabilized. The example on the
right deals with reflected light on packing film.
Great figures are indicated for the blue LED’s light
amount ratio and, for even more stable sensing, the
blue LED effectuates this mark sensing.
The LX-100 series sensors automatically selects
the optimal LED that will ensure the most stable
sensing results.
Mark
Light amount
=
ratio
Base
6 : 8
Mark
Light amount
=
ratio
Base
8 : 4
Mark
Light amount =
ratio
Base
4 : 1
Optimal
Mark
Has a built-in ‘Mark mode’ that realizes a ultra quick 45
¨
s response time as well as a ‘Color mode’
offering the best mark color discrimination capacity. Use either of these modes as per the application.
This sensing mode automatically selects a single
color from the 3 R
•
G
•
B LEDs to realize an ultra
quick 45
!
s response time. The automatic optimal
LED selection function automatically selects the LED
that is most suitable for the sensing. This function is
perfect for ultra quick sensing.
Reflectiv
e light
Reflectiv
e light
Reflectiv
e light
Automatic selection
Automatic selection
Automatic selection
Automatic selection
Automatic selection
Automatic selection
Automatic selection
Automatic selection
Automatic selection
Automatic selection
Automatic selection
Automatic selection
Automatic selection
Automatic selection
Automatic selection
Automatic selection
Automatic selection
3
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