DATA SHEET
Position Sensor C7339
(For Laser Beam Alignment)
The C7339 Position Sensor is an opto-electric position-
sensing unit which measures the position of a single
point of light spot-focused onto the sensor head.
The use of hybrid circuitry allows for a compact, light-
weight design and a divided configuration with a light,
compact sensor head and a controller equipped with a
light level indicator and data displays for ease of opera-
tion. The measured position is displayed digitally in terms
of X- and Y-coordinate voltages on the front panel of the
controller and may be simultaneously output to a re-
corder.
The C7339 does not possess a background-light cancel-
lation function and is suited for use in locations where the
signal light is distinct from the background such as in the
detection of laser beams.
FEATURES
Quick Response
The response time of less than 20
s enables accurate mea-
surement of the spot, even while it is moving at high speeds.
Stable Measurement
The position data (X-Y coordinate voltages) of a light spot is
obtained without being affected by signal current fluctua-
tions from the PSD, enabling accurate position measurement
regardless of fluctuations in the light intensity.
Broad Spectral Response
The C7339 has a broad spectral range, from 300 to 1100 nm,
enabling the detection of a variety of light sources, including
lasers.
High Resolution
The PSD employed in the sensor head is of the non-discrete
type, which, contrary to a discrete-type sensor, has no insen-
sitive area. This enables continuous measurement at a high
resolution of 1/5000 (when using a recorder).
Light Level Indicator
The input light level is i
ndicated in digits on the front panel
of the control unit (0.00 to 10.0) so as to make it easy to adjust
the lens iris and select an ND filter.
Power Macintosh
6100/60
Power PC
AD convertor
Laser beam
Sensor head
Standard configuration
Controller
X-Y Recorder
Oscilloscope
Computer
Analog
OUT
Analog
OUT
H A M A M A T S U
POSITION SENSOR SYSTEM
C7339
POWER
HIGH
LEVEL
SENSOR HEAD
LOW
X D A T A
POWER
1 . 1 1
Y D A T A
1 . 1 1
5 . 5
HAMAMATSU
SYSTEM CONFIGURATION EXAMPLE
Laser beam alignment system
Subject to local technical requirements and regulations, availability of products included in this promotional material may vary.
Please consult with our sales office.
Information furnished by HAMAMATSU is believed to be reliable. However, no responsibility is assumed for possible inaccuracies
or omissions. Specifications and external appearance are subject to change without notice.
1999 Hamamatsu Photonics K.K.
Homepage Address http://www.hamamatsu.com
HAMAMATSU PHOTONICS K.K., Systems Division
812 Joko-cho, Hamamatsu City, 431-3196, Japan, Telephone: (81)53-431-0124, Fax: (81)53-435-1574, E-mail:export@sys.hpk.co.jp
U.S.A. and Canada: Hamamatsu Photonic Systems: 360 Foothill Road, Bridgewater, N.J. 08807-0910, U.S.A., Telephone: (1)908-231-1116, Fax: (1)908-231-0852
Germany: Hamamatsu Photonics Deutschland GmbH: Arzbergerstr. 10, D-82211 Herrsching am Ammersee, Germany, Telephone: (49)8152-375-0, Fax: (49)8152-2658
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: Lough Point, 2 Gladbeck Way, Windmill Hill, Enfield, Middlesex EN2 7JA, United Kingdom, Telephone: (44)181-367-3560, Fax: (44)181-367-6384
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
Cat. No. SIMS1004E01
FEB/99 CR
Created in Japan (PDF)
OTHER APPLICATIONS
Surface Flatness Measurement
Solar Tracking Systems
CONFIGURATION
Sensor head (C7339-01) ....................... 1
Controller (C7339-0X*) .......................... 1
AC cable (2m) ........................................ 1
Head connecting cable (5m) .................. 1
Signal cables (BNC-BNC, 3m) .............. 2
Fuses (1A) ............................................. 3
Line voltage * X = 2 ......................... 100V
3 .......................... 117V
4 .......................... 220V
5 .......................... 240V
OPTIONAL
Metal interference filters
Filter adapter
SPECIFICATIONS
Detector
Non-discrete position-sensitive detector
(Hamamatsu S1880-03)
Useful sensitive area (Fig.1)
10
10mm
Lens mount
C mount
Output voltage: X-axis
5 to + 5V
Y-axis
5 to + 5V
Output impedance
500
10%
Response speed (Fig.2)
Within 20
s
Recommended measurement light level
Light level (
) = 8 (Displayed on a level indicator)
Position detection error
Zone A (refer to figure below)
1.0%, Zone B
2.0%
Error due to light intensity variations
1% (Light level (
) = 8
4)
Resolution (when using a recorder)
1/5000
Jitter
1.5/1000
Drift
0.5%/day (after the first 30 minutes)
Operating temperature
0 to +40
C
Storage temperature
10 to +50
C
Operating/storage humidity
Less than 90% (with no condensation)
Line voltage
100/117/220/240VAC
10%, 50/60Hz
Power consumption
Approx. 30VA
ZONE A
ZONE B
10mm
10mm
5mm
INPUT
LIGHT
OUTPUT
VOLTAGE
RISE TIME
FALL TIME
20
s
20
s
10%
90%
RESPONSE
FREQUENCY
OUTPUT
0
100H
Z
2kH
Z
-3dB
Fig.1 Useful Sensitive Area
and Zones A and B
Fig.2 Rise and fall time of the output voltage when a pulsed light is applied to the center
of the sensitive area.
The rise time is the period of time required for the output voltage to rise from 10%
to 90% of its full level.
The fall time is the period required for the output voltage to return from 90% to 10%.
Fig.3 Response frequency of the output
voltage when a spot light is moved
right and left repeatedly while it is
being applied to the sensitive area.
When light with the value on the table at the left is input, "8" appears on the
display indicating the volume of incident light. If strong laser light is used, an
ND filter or similar means should be used to reduce the volume of laser light
to the optimum volume before beginning measurement.
Laser
Wavelength
Input Laser Power
He-Ne Laser
632nm
Approx. 23
W
Ar Laser
514nm
Approx. 27
W
40
64
42
HAMAMATSU
H A M A M A T S U
POSITION SENSOR SYSTEM
C7339
POWER
HIGH
LEVEL
SENSOR HEAD
SIGNAL OUT
X DATA
Y DATA
LOW
X D A T A
POWER
1 . 1 1
Y D A T A
1 . 1 1
5 . 5
LINE
232
74
227
69.6
DIMENTIONAL OUTLINE (UNIT:mm)
Sensor head
(Weight: Approx. 140g)
Controller
(Weight: Approx. 3.87kg)
OPTIMUM INPUT LASER POWER
ISO 9001/ISO 13485
EN 46001
Certificate: 09 105 79045
PDF 
ZIP