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Position Sensor C7339
DATA SHEET
(For Laser Beam Alignment)
The C7339 Position Sensor is an opto-electric positionsensing 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, lightweight 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 operation. 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 recorder. The C7339 does not possess a background-light cancellation 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 20µs enables accurate measurement 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 fluctuations 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 insensitive area. This enables continuous measurement at a high resolution of 1/5000 (when using a recorder).
SYSTEM CONFIGURATION EXAMPLE
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• Light Level Indicator The input light level is indicated 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.
Standard configuration Controller Sensor head
HAMAMATSU
HAMAMATSU
POWER POSITION SENSOR SYSTEM
Computer
C7339
LEVEL
HIGH LOW
X DATA
Y DATA
Laser beam
POWER
1.11
1.11
5.5
SENSOR HEAD
Analog OUT
AD convertor
Power Macintosh 6100/60
Power PC
Laser beam alignment system
Analog OUT X-Y Recorder Oscilloscope
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OTHER APPLICATIONS
• Surface Flatness Measurement • Solar Tracking Systems
SPECIFICATIONS
Detector Useful sensitive area (Fig.1) Non-discrete position-sensitive detector (Hamamatsu S1880-03) 10 × 10mm C mount – 5 to + 5V – 5 to + 5V 500Ω ± 10% Within 20µs Light level (∑ ) = 8 (Displayed on a level indicator) Zone A (refer to figure below) ± 1.0%, Zone B ±2.0% ± 1% (Light level (∑) = 8 →4) 1/5000 ± 1.5/1000 ± 0.5%/day (after the first 30 minutes) 0 to +40 °C –10 to +50 °C Less than 90% (with no condensation) 100/117/220/240VAC ±10%, 50/60Hz Approx. 30VA Y-axis Output impedance Response speed (Fig.2) Recommended measurement light level Position detection error Error due to light intensity variations Resolution (when using a recorder) Jitter Drift Oper.