3
Preparation
Setup
Before connecting the devices, adapt the whole scanner setup to the size of the object or surface
region you want to scan.
The intersection angle between projection and camera view should be around 20°-25° (max. 15°-
35°).
The following table should give you some indications for an optimal setup:
Size of scan
object /
surface region
s
Calibration
pattern
Lens distance
b
between
camera and
projector
Distance
d
between
scanner and
object
Achievable scan
resolution (approx.
0.2% of object size)
<30 mm
30 mm
ca. 30 mm
ca. 90 mm
< 0.1 mm
50 mm
60 mm
ca. 40 mm
ca. 120 mm
ca. 0.1 mm
70 mm
60 mm
ca. 65 mm
ca. 180 mm
ca. 0.15 mm
90 mm
120 mm
ca. 80 mm
ca. 220 mm
ca. 0.2 mm
120 mm
120 mm
ca. 110 mm
ca. 300 mm
ca. 0.25 mm
150 mm
120 mm
ca. 125 mm
ca. 350 mm
ca. 0.3 mm
200 mm
240 mm
ca. 160 mm
ca. 450 mm
ca. 0.4 mm
300 mm
240 mm
ca. 250 mm
ca. 700 mm
ca. 0.6 mm
500 mm
240 mm
ca. 400 mm
ca. 1200 mm
ca. 1.0 mm
in general
similar to object
angle 20°-25°
between them
object should fill
camera image
ca. 0.2% of object
size
The camera can be mounted left or right of the projector – depending on how a suitable distance
between their lenses can be achieved. The scanner can also be mounted vertical, with camera
and projector above each other.
(top view)
(side view)
distance
d
distance
b
20-25°
object size
s
