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