Color sensor (LED type)
E3MC
Double Indication ensuring high
visibilty.
• Conformity with the registered colors can
be monitored at eight levels. (Detection
level indicators)
• Allows fine adjustment between fine or
rough discrimination while monitoring the
measured results. (Threshold level indica-
tors)
Stable and Powerful Detection for Inline Use
Stable detection is assured with a threshold
of ±10 mm for built-in amplifier type and
±4 mm for optical fiber type.
Fiber type and Stable detection
±4 mm.
Stable and Powerful Detection for Inline Use
Mounting is easy.
Long-distance Sensing with Built-in Amplifi-
er Type
Built-in amplifier type with a sensing distance of 60±10 mm is
available for a wide range of color discriminating applications.
Highly Resistant to Changes in Sensing Ob-
ject Brightness and Ambient Temperature.
• OMRON's unique Free Angle Optics (FAO: multi-layer po-
larized filter) is highly resistant to changes in the tint or
E3MC
RGB Color Sensor Discriminates Delicate
Differences in Color.
Features
60˚
10˚
10˚
brightness of sensing objects. Capable of discriminating
over 90 different colors.
• Wide temperature range from -20°C to 55°C and excellent
detection stability.
Maintenance-free LED Light Source
Incorporates RGB LED light sources with a long service life
more than several tens of thousand hours.
Great maintenance-cost saver ensuring high performance
(Halogen lamps used as light sources must be replaced or re-
adjusted every nine months or so.)
Principle of Detection
The E3MC detects colors by making use of the fact that the reflec-
tion ratio of a primary color (i.e. red, green or blue) reflected by an
object varies with the chromatically of the object. By using a high-
tech, multi-layer polarized filter called FAO (free angle optics), the
E3MC emits red, green and blue light on a single optical axis. The
E3MC receives the light reflected by the sensing objects through
the receiver and processes the red-green-blue ratio of the light to
discriminate the color of the sensing object.
FAO
(Blue: Reflected;
Red/Green: Passed)
FAO
(Green: Reflected; Red: Passed)
Red LED
(R)
Green LED
(G)
Blue LED
(B)
Monitor photodiode (see note)
Note: The monitor photodiode compensates LED output deviation that may be
caused by a temperature change. (Patent pending)
Photodiode
Receiver lens
R
G
B
B
G
R
Emitter lens
Time-sharing lighting
A-145