Datasheet
Optical Characteristics
Radiation Source
Aperture
A2TPMI
Ô
The A2TPMI is available with different
standard optical cap assemblies with
and without an infrared lens or mirror.
The optics defines the view angle or
field of view (FOV) of the sensor.
Distance 2m
The FOV is defined as the incidence
angle difference, where the sensor
shows 50% relative output signal ac-
cording to the setup shown.
Relative output signal
100%
FOV at half
energy points
50%
TPMI
Angle of incidence
Figure 1:
FOV definition
Rotation
Symbol Parameter
Min
Typ
Max
Unit Conditions
Standard Cap Type (C4)
FOV
OA
Field of view
Optical axis
60
0
70
±
10
°
°
50% rel. output signal
High cap type with internal reflector (C6 IRA)
FOV
OA
Field of view
Optical axis
15
0
20
±2
°
°
50% rel. output signal
Low cap type (C7)
FOV
OA
Field of view
Optical axis
100
125
0
105
135
±10
°
°
°
50% rel. output signal
10% rel. output signal
Mirror Module (ML / MR / MF)
Field of view
7
12
°
50% rel. output signal
Lens
Cap Type (L5.5)
FOV
OA
D:S
Field of view
Optical axis
Distance to spot size ratio
7
0
8:1
12
±
3.5
°
°
50% rel. output signal
A2TPMI Datasheet Rev4
Page 7 of 21
Rev. Oct 2003
PERKINELMER [ PERKINELMER OPTOELECTRONICS ]
