S1352 Ver la hoja de datos (PDF) - Hamamatsu Photonics
Número de pieza
componentes Descripción
Fabricante
S1352 Datasheet PDF : 4 Pages
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One-dimensional PSD S3979, S3931, S3932, S1352, S3270
s Example of position detectability (Ta=25 °C, λ=900 nm, spot light size: φ0.2 mm)
S3979
+150
S3931
+150
+100
+100
+50
+50
0
0
-50
-50
-100
-100
-150
-1.5 -1.0 -0.5
0
+0.5 +1.0 +1.5
+150
POSITION ON PSD (mm)
S3932
KPSDB0010EB
+100
+50
0
-50
-100
-150
-6 -5 -4 -3 -2 -1 0 +1 +2 +3 +4 +5 +6
POSITION ON PSD (mm)
KPSDB0012EB
s Conversion formula of spot light position on the PSD
If output signals (photocurrent) I1 and I2 are obtained
from electrodes X1 and X2, then the light spot position
(x) on the PSD can be found by the following formula.
L
X1
X2
I2 - I1 2x
x
=
I1 + I2 L
ACTIVE AREA
KPSDC0010EA
s Correction for position detection error
Position detection characteristics obtained by the above
formula can be corrected to reduce position detection
errors. For example, the maximum position detection
error (±120 µm) of S3931 can be significantly reduced
to ±9 µm by using the least square method.
-150
-3
-2
-1
0
+1
+2
POSITION ON PSD (mm)
S1352
+3
KPSDB0011EB
+125
-125
-15
-10 -5
0
+5 +10
POSITION ON PSD
S3270
+15
KPSDC0023EB
+100
-100 -20 -15 -10 -5 0 +5 +10 +15 +20
POSITION ON PSD
KPSDC0068EA
s Dimensional outlines (unit: mm)
S3979
ACTIVE AREA
X
WINDOW
5.9 ± 0.1
9.2 ± 0.2
8.1 ± 0.1
PHOTOSENSITIVE
SURFACE
0.45 LEAD
5.08 ± 0.2
ANODE (X2)
ANODE (X1)
CATHODE (COMMON)
CONNECTED TO CASE
KPSDA0007EC
3
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