![](http://datasheet.mmic.net.cn/300000/S3931_datasheet_16208988/S3931_5.png)
2
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.
Two-dimensional PSDs are classified by structure into a tetra-lateral type and a
duo-lateral type. The tetra-lateral type features high-speed response and low
dark current. The duo-lateral type offers small position detection error and high
position resolution. A pin-cushion type, which is a tetra-lateral type with
improved active area and electrodes, has a position detection error as small as
the duo-lateral type while still having the advantages of the tetra-lateral type.
Selection guide
(Typ.)
Interelectrode resistance
Vb=0.1 V
(k
)
Resistance length
(mm)
Type No.
Package
Spectral response
range
(nm)
S5681
Ceramic
Active area
(mm)
0.025
×
6.375/
128 elements
100
6.375
(Typ.)
Interelectrode
resistance
Vb=0.1 V
(k
)
S7848
S7848-01
Works with microscopic spot light detection
Plastic
2
×
2
2
×
2
10
×
10
4.5
×
4.5
5.7
×
5.7
26
×
26
14
×
14
13
×
13
S1200
S1300
S1880
S1881
100
7
7
Tetra-lateral type
Duo-lateral type
Pin-cushion type
(improved tetra-lateral type)
Pin-cushion type
(improved tetra-lateral type)
Tetra-lateral type
Ceramic
13
×
13
S2044
Metal
4.7
×
4.7
12
×
12
22
×
22
10
10
10
10
Ceramic
Pin-cushion type
(improved tetra-lateral type)
S5990-01
S5991-01
4
×
4
9
×
9
Ceramic
chip carrier
Type No.
Package
Structure
Active area
(mm)
Resistance
length
(mm)
Spectral response
range
(nm)
1
2
3
5
6
7
8
9
4
1
2
3
5
6
7
8
9
4
128-element PSD array
···························································
Two-dimensional PSD
······························
n
Examples of position detectability (Ta=25
C,
λ
=890 nm, spot light size:
φ
200 μm)
l
S1200
l
S1300
KPSDC0017EA
KPSDC0015EA
l
S1880
KPSDC0020EA
l
S5991-01
KPSDC0065EA
l
S7848
KPSDC0084EA
LINE INTERVAL: 1 mm
LINE INTERVAL: 1 mm
LINE INTERVAL: 1 mm
LINE INTERVAL: 1 mm
LINE INTERVAL: 0.2 mm
320 to 1060
320 to 1100
320 to 1060
320 to 1060
320 to 1100
760 to 1100
320 to 1100
320 to 1100