AK9752AE Datasheet, PDF (30/36 Pages) Asahi Kasei Microsystems – Ultra-small IR sensor IC with IC

[AK9752]
15. Field of View (Reference)
Field of View (FOV) of sensor itself is 180 º. On the other hand, actual FOV is determined and limited by
a hole in a mounting board. Measurement result is shown below in case that the hole is designed for
FOV to be 115 º(Typ.).
1.2
On board (FOV=115°)
Sensor alone (Calculation)
1.0
0.8
0.6
0.4
0.2
0.0
-90 -80 -70 -60 -50 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90
Angle θ[°]
Figure 15.1. Field of View
[Measurement Conditions]
Ambient temperature (Ta)
Light source
Field of View (FOV)
Distance between sensor and light source
25ºC
Cavity Blackbody Φ22.2mm, 500K
115 º (determined by a hole)
100mm
100mm
θ
Cavity
Blackbody
0.8mm
Mounting Board
AK9752
Mounting
Board
115°
AK9752
Figure 15.2. Measurement environment
Hole (aperture)
0.35mm
IR receiving surface
016016473-E-00
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