Polytec PSV-I-500 - Optics PSV-I-560;PSV-I-570 (Xtra)

7-20
7 Technical Specifications
7.5.5 Optics PSV-I-560/PSV-I-570 (Xtra)
Figure 7.4: Depth of focus subject to the stand-off distance (PSV-500-3D Standard)
Focal length (nominal): 70 mm
Minimum stand-off distance: 125 mm
Stand-off distance
1
1
Measured from the front of the scanning head
Spot diameter
(1/e
2
, typ.)
2
For 3 dB signal reduction
Depth of focus
(typ.)
2
Aperture diameter
3
3
At the front of the scanning head
[mm] [µm] [± mm] [mm]
150 66 1.5 5.4
200 79 2 6.2
500 148 7 8.3
1000 259 22 9.5
2000 480 75 10.2
5000 1128 413 10.6
With each additional meter stand-off distance 216 µm are added to the spot
diameter.
0.1
0.01
Depth of focus [m]
Distance from front panel [m]
0
1
23
4
5
6
78
9
10
1
1E-3
1E-4