Distance & Spot Size - CEM DT-8833 Operation Manual

Distance & Spot Size
As the distance (D) from the object increases, the spot size
(S) of the area measured by the unit becomes larger. The
relationship between distance and spot size for each unit is
listed below. The focal point for each unit is 914mm (36").
The spot sizes indicate 90% encircled energy.
Fig: 1
M O D E L:8833
D istance(D) to Spot Size(S)
D :S=13:1
0.4@ 5.2 1.2@ 15.6
10@ 130 30@ 390
Laser B eam
16m m
inch
2.0@ 26
Sensor Beam
50@ 650
m m
D
- - 5
S