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Электронный компонент: S6515

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PSD
(
POSITION SENSITIVE DETECTOR
)
SOLID
STATE
D I V I S I O N
Various methods are available for detecting the position of incident light. These
include methods using small discrete detector arrays or multi-element sensors such
as CCD sensors. In contrast to these sensors, PSDs (Position Sensitive Detectors)
are comprised of a monolithic detector with no discrete elements and provide
continuous position data by making use of the surface resistance of the photodiode.
PSDs offer advantages such as high position resolution, high-speed response and
reliability.
What is PSD?
Excellent position resolution
Wide spectral response range
High-speed response
Detects center-of-gravity position of spot light
Simultaneously detects light intensity and center-of-gravity position of spot light
High reliability
n
Features of PSD
Position and angle sensing
Distortion and vibration measurements
Lens reflection and refraction measurements
Laser displacement sensing
Optical remote control
Optical range finders
Optical switches
Camera auto focusing
n
Applications of PSD
Selection guide
Description of terms
Characteristic and use
1. Basic Principle
2. One-dimensional PSD
3. Two-dimensional PSD
4. Position detection error
5. Position resolution
6. Response speed
7. Saturation photocurrent
1
4
5
5
5
5
7
8
10
11
CONTENTS
1
Hamamatsu provides various types of one-dimensional PSDs designed
for high-precision distance measurement such as displacement meters,
camera auto focusing and optical switches. Our product line includes a
visible-cut type for near infrared detection, a red sensitivity enhanced type
for red light detection, a microscopic spot light (LD beam, etc.) detection
type, and a long, narrow type with an active area exceeding 30 mm.
Selection guide
PSD (Position Sensitive Detector) is an optoelectronic position sensor utiliz-
ing photodiode surface resistance. Unlike discrete element detectors such as
CCD, PSD provides continuous position data (X or Y coordinate data) and
features high position resolution and high-speed response.
1
2
3
2
3
2
3
4
4
2
3
4
2
3
4
7
8
7
9
10
9
11
12
13
14
15
5
6
11
13
12
14
15
One-dimensional PSD
(mm)
(mm)
(k
)
(nm)
S6407
1 1
1
200
760 to 1100
S6515
1 1.2
1.2
140
760 to 1100
S4580-04
760 to 1100
S4580-06
0.8 1.5
1.5
140
320 to 1100
S4581-04
760 to 1060
320 to 1060
760 to 1060
760 to 1100
320 to 1100
760 to 1100
760 to 1100
320 to 1100
760 to 1100
440 to 1100
400 to 1100
760 to 1100
320 to 1100
760 to 1100
760 to 1100
320 to 1100
760 to 1100
760 to 1100
320 to 1100
760 to 1100
320 to 1100
320 to 1100
320 to 1100
320 to 1100
700 to 1100
S4581-06
140
S3271-05
1 2
2
400
S4582-04
S4582-06
140
S3272-05
1 2.5
2.5
400
S4583-04
S4583-06
140
S3273-05
400
S7879
S8361 *
1 3
3
110
S4584-04
S4584-06
140
S3274-05
1 3.5
3.5
400
S7105-04
S7105-06
140
S7105-05
1 4.2
4.2
400
S5629
S5629-01
50
S5629-02
1 6
6
300
Plastic
S3979
1 3
3
140
TO-5
S3931
1 6
6
50
S3932
1 12
12
50
S1352
2.5 34
34
20
S3270
1 37
37
15
Ceramic
* High sensitivity in the red region type
Works with microscopic spot light detection.
1
2
3
4
5
7
8
9
10
6
Interelectrode
resistance
Vb=0.1 V
Type No.
Active area
Resistance length
Package
Spectral response
range
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
Plastic
2 2
2 2
10 10
4.5 4.5
5.7 5.7
26 26
14 14
13 13
S1200
100
7
7
Tetra-lateral type
Tetra-lateral type
S1300
Ceramic
13 13
Duo-lateral type
S2044
Metal
4.7 4.7
S1880
12 12
10
10
10
10
S1881
Ceramic
22 22
Pin-cushion type
(improved tetra-lateral type)
Pin-cushion type
(improved tetra-lateral type)
Pin-cushion type
(improved tetra-lateral type)
S5990-01
4 4
S5991-01
Ceramic
chip carrier
9 9
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,
=890 nm, spot light size:
200 m)
l
S1200
KPSDC0017EA
l
S1300
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
Works with microscopic spot light detection
320 to 1060
320 to 1100
320 to 1060
320 to 1060
320 to 1100
760 to 1100
320 to 1100
320 to 1100