Features
l Multiple-element array allows 3-D shape measurement
l High-speed processing due to parallel readout
Applications
l 3-D shape measurement, etc.
P S D
128-element PSD array
128 elements of 1-D PSD are arrayed in parallel
S5681
S5681 is a 128-element PSD linear array. By scanning a slit-form light beam right and left based on the slit light projection method, S5681 allows
measuring a 3-D shape of the object. Custom devices with a different active area shape or number of elements are also available.
s
Absolute maximum ratings
Parameter
Symbol
Value
Unit
Reverse voltage
V
R
Max.
20
V
Operating temperature
Topr
-10 to +60
C
Storage temperature
Tstg
-20 to +80
C
s
Electrical and optical characteristics (Ta=25 C, per 1 element)
Parameter
Symbol
Condition
Min.
Typ.
Max.
Unit
Spectral response range
-
320 to 1100
-
nm
Peak sensitivity wavelength
p
-
960
-
nm
Photo sensitivity
S
=p
0.57
0.62
-
A/W
Interelectrode resistance
Rie
Vb=0.1 V
80
100
120
k
Position detection error *
1
E
V
R
=15 V
-
20
60
m
Saturation current
Ist
V
R
=15 V
0.1
-
-
mA
Dark current
I
D
V
R
=15 V
-
0.1
1
0
nA
Rise time
tr
V
R
=15 V, R
L
=1 k
=900 nm, 10 to 90 %
-
1.8
-
s
Terminal capacitance
Ct
V
R
=15 V, f=10 kHz
-
8.0
-
pF
Position resolution *
2
R
*
3
-
0.5
-
m
*1: Suppose errors at a position 2.23 mm (70 %) away from the origin are LE (+) and LE (-) when the electrical center of a PSD
is viewed as the origin, the positional shift from a straight line connecting between LE (+) and LE (-) is specified as the
position detection error. (See the figure at the right.)
*2: Detectable amount of light spot displacement. The detection limit is expressed in terms of the distance on the active area.
*3: Photocurrent: 1 A, Interelectrode resistance: typical value
Frequency bandwidth: 1 kHz, Circuit input noise: 1 V (1 kHz)
ERROR
2.23 mm
+ 2.23 mm
ELECTRICAL CENTER (ORIGIN)
LE (+)
LE (-)
POSITION DATA
s Position detection error
KPSDC0060EA
HAMAMATSU PHOTONICS K.K., Solid State Division
1126-1 Ichino-cho, Hamamatsu City, 435-8558 Japan, Telephone: (81) 053-434-3311, Fax: (81) 053-434-5184, http://www.hamamatsu.com
U.S.A.: Hamamatsu Corporation: 360 Foothill Road, P.O.Box 6910, Bridgewater, N.J. 08807-0910, U.S.A., Telephone: (1) 908-231-0960, Fax: (1) 908-231-1218
Germany: Hamamatsu Photonics Deutschland GmbH: Arzbergerstr. 10, D-82211 Herrsching am Ammersee, Germany, Telephone: (49) 08152-3750, Fax: (49) 08152-2658
France: Hamamatsu Photonics France S.A.R.L.: 8, Rue du Saule Trapu, Parc du Moulin de Massy, 91882 Massy Cedex, France, Telephone: 33-(1) 69 53 71 00, Fax: 33-(1) 69 53 71 10
United Kingdom: Hamamatsu Photonics UK Limited: 2 Howard Court, 10 Tewin Road, Welwyn Garden City, Hertfordshire AL7 1BW, United Kingdom, Telephone: (44) 1707-294888, Fax: (44) 1707-325777
North Europe: Hamamatsu Photonics Norden AB: Smidesvgen 12, SE-171 41 Solna, Sweden, Telephone: (46) 8-509-031-00, Fax: (46) 8-509-031-01
Italy: Hamamatsu Photonics Italia S.R.L.: Strada della Moia, 1/E, 20020 Arese, (Milano), Italy, Telephone: (39) 02-935-81-733, Fax: (39) 02-935-81-741
Information furnished by HAMAMATSU is believed to be reliable. However, no responsibility is assumed for possible inaccuracies or omissions.
Specifications are subject to change without notice. No patent rights are granted to any of the circuits described herein. 2001 Hamamatsu Photonics K.K.
128-element PSD array
S5681
Cat. No. KPSD1012E02
Mar. 2001 DN
SLIT LIGHT SOURCE
ROTATIONAL
MIRROR
SLIT-FORM LIGHT
TARGET OBJECT
SLIT-FORM IMAGE
By scanning a slit-form light beam over the target object
right and left with a rotational mirror, the slit-form image
of the target object can be measured on the surface of the
128-element PSD array. Position data at 128 points can
also be obtained simultaneously.
S5681
ACTIVE AREA
6.375
ELEMENT No.
1
2
3
4
126
(ANODE 2)
(ANODE 1)
127
128
125
ACTIVE AREA
0.025
PITCH
0.05
6.375 *
*
P
0.05 127 + 0.025 = 6.375
1
128
ACTIVE AREA
GLASS 23.37
50.8 0.5
2.54 19
2.54
(256 ) ANODE
CATHODE
2.54
19
0.5
1.45
1.27
3.3 0.35
(4.5)
PHOTO-
SENSITIVE
SURFACE
GLASS
(257
) 0.46
(4
) 1.27
LIGHT SHIELD (Al)
s Dimensional outline (unit: mm)
s Enlarged view of active area (unit: mm)
KPSDA0042EA
s Application example
KPSDA0035EA
A separate document is available for information
about pin connections.
KPSDC0061EA
PDF 
ZIP