Millimeter-Accurate Distance Measurement for Real-Time Industrial Systems
The LDJU high-speed laser distance sensor is designed for applications that require ultra-fast response, stable continuous output, and millimeter-level accuracy.
With a maximum measurement frequency of 10,000 measurements per second, LDJU is ideal for industrial automation, motion control, and real-time feedback systems.
Key Highlights
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Up to 10 kHz continuous measurement frequency
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±(3 mm + D × 1/10000) accuracy
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1 mm resolution
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iToF phase-difference ranging technology
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TTL / USB / RS232 / RS485 support
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OEM-ready with ASCII protocol & firmware upgrade support
What Is the LDJU Laser Distance Sensor?
The LDJU is a compact, industrial-grade high-speed laser distance sensor based on indirect Time-of-Flight (iToF) phase-difference measurement technology.
It continuously measures the distance between the sensor and a target by analyzing the phase shift between emitted and reflected laser signals.
Compared to conventional distance sensors, LDJU focuses on high-frequency output combined with stable accuracy, making it suitable for dynamic systems where real-time distance feedback is critical.
Watch a real-world performance test of the LDJU high-speed laser distance sensor, including continuous 10 kHz output and signal stability.
Why Choose LDJU?
1.Ultra-High Measurement Speed
LDJU supports continuous measurement frequencies up to 10 kHz, enabling fast response in high-speed control systems.
2.Stable Millimeter Accuracy
With 1 mm resolution and adaptive measurement timing, LDJU maintains stable output even when target reflectivity or signal strength changes.
3.Adaptive Measurement Logic
The sensor automatically adjusts measurement speed:
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Strong signal → faster measurement
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Weak signal → optimized timing to preserve accuracy
This ensures reliable results without sudden distance jumps.
Industrial & OEM Friendly
LDJU supports TTL communication by default and can be integrated with USB, RS232, or RS485 systems via external conversion modules.
The ASCII-based command protocol with MODBUS CRC16 makes system integration straightforward.
Measurement Technology – iToF Phase Difference
LDJU adopts indirect Time-of-Flight (iToF) technology, which calculates distance by measuring the phase difference between a modulated laser signal and its reflection.
Benefits of iToF in LDJU
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High distance resolution
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Reduced timing complexity
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Strong resistance to ambient light
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Optimized for short- to medium-range, high-speed measurement
Applications typiques
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Industrial automation and motion control
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Robotics and AGV positioning
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Conveyor and sorting systems
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Real-time displacement monitoring
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OEM embedded measurement systems
Integration & Next Steps
LDJU is designed for direct integration into industrial and embedded platforms, supporting continuous output, system diagnostics, and firmware upgrades.
