Single Laser Sighting; Dual Laser Sighting - RayTek 3i Operator's Manual

2.7.1 Single Laser Sighting

A single laser unit (see Figure 2-14) indicates the center of the area being measured,
not the diameter of the spot. (To find out the diameter of the spot being measured,
refer to the optical charts in Appendix A.)

2.7.2 Dual Laser Sighting

A dual laser unit indicates the diameter of the spot being measured. To take a mea-
surement, aim the unit at the target and move closer or farther until the target is with-
in the laser dots.
Note: The IR and laser spot diameters are not the same at close distances. The distance
between the laser beams is slightly greater than the spot being measured. Refer to
Figure 2-15 for a comparison of the IR spot and laser beam diameters.
Dual Laser
0
0
IR Spot Diameter at Lens = 23 mm (0.9 in)
Laser Diameter at Lens = 40 mm (1.6 in)
Figure 2-15: Dual Laser and IR Spot Diameters
Raynger 3i Series Operator's Manual
Figure 2-14: Single Laser Sighting
Focus Point D:S = 75:1 @ 15 m (50 ft)
DISTANCE: SENSOR TO OBJECT (ft)
10 20
2 4 6
DISTANCE: SENSOR TO OBJECT (m)
Far Field D:S = 68:1
30 40
8 10 12
IR
LASER
50
16
12
8
4
0
75
150
225
300
14 16
2-31