Positioning The Scanner - Ametek LAND LSP HD Series User Manual

LSP Linescanner Head
HD

2.3 Positioning The Scanner

Before installing the scanner, refer to the cautions given in Section 2.1.
The scanner must be installed so that the target plane is parallel to the scanner
window.
Refer to Fig. 3 (below). The width of the scan (SW) is proportional to the distance
(TD) between the scanner and the target plane. Choose a target distance that will give
a scan line that just exceeds the width of the product, as this gives maximum spatial
resolution.
y axis
x axis
Page 10
40°
80°
Scan Width (SW)
y axis
Fig. 3 Scan width and target size dimensions
TP = TD
cos 40
Target Path (TP)
x axis
Target spot becomes more elliptical with
increased distance from scan centre line.
See target size tables for x and y axis
sizes at ±40°
User Guide
Target
Distance
(TD)