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If the whiteboard frame thickness is less than 3mm, ensure the reflected light
interference is not observed while doing Step 6 Laser Beam Alignment.
C.
Measuring projection surface flatness
Criteria: overall whiteboard flatness <5mm, flatness requirement is <3mm at Light
Curtain Touch module mounting area.
Equipment: leveling instrument (1.2~1.5m) and thickness gauge.
Split projection area into 16 segments equally as below chart. Place leveling
instrument on whiteboard.
Fra
White board
IR
CAMERA
>
3mm
≤3mm
White board
IR
CAMERA
NG
OK
Point1
Point2
Point3
Point4
Point5
Point6
Point7
Point8
Point9