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1535nm Eye-safe Laser Rangefinder Module 5km SF-DYC17A

The SF-DYC17A is a lightweight, high-performance laser rangefinder (62×43.5×34mm, ≤80g) designed for rapid, eye-safe distance measurement up to 5km. Operating at 1535nm (Class 1M compliant), it delivers ±2m accuracy with a 1-5Hz refresh rate, ideal for integration into drones, surveying tools, and industrial systems. Military-grade durability ensures reliable performance in extreme temperatures (-40°C to +70°C).

Key Selling Points

  • Eye-Safe & Reliable: 1535nm laser (Class 1M) ensures user and environmental safety.
  • Military-Grade Durability: Operates in extreme temperatures (-40°C to +70°C) and resists shock/vibration.
  • High Precision: ±2m accuracy with 5km max range for reliable data.
  • Compact & Lightweight: 62mm x 43.5mm x 34mm, 80g—perfect for mobile applications.
  • Versatile Modes: Single/continuous measurement and self-diagnostic functions.
  • Easy Integration: RS422 interface and plug-and-play compatibility with drones/robotics.

Main Functions 

a) ​Distance Measurement & Real-Time Reporting: Accurately measures and stably reports target distances. Ensures no zero jumps or false readings during continuous measurement of stable targets.
b) ​Single/Continuous Measurement Modes: Supports both single-shot and adjustable-frequency (1–5Hz) continuous ranging.
c) ​Laser Emission Count Reporting: Tracks and reports total laser pulses for maintenance monitoring.
d) ​Self-Diagnostic Function:

  • Automatic power-on self-test (POST).
  • Command-triggered self-test to verify critical component status (laser health, APD voltage, temperature).

e) ​Fail-Safe Protection:

  • Wide-voltage input design (10–14V DC).
  • Reverse polarity protection to prevent damage from incorrect wiring.

Applications

  • Drones & UAVs (navigation, mapping)
  • Robotics & automation (obstacle detection)
  • Industrial surveying & construction
  • Outdoor sports (hunting, golf, mountaineering)
  • Security systems & traffic monitoring

Specifications

Laser Wavelength 1535nm ±10nm
Maximum Range ≥5km (under conditions: atmospheric visibility ≥8km, relative humidity ≤80%, and grazing angle ≤79° on surfaces including sand, grass, desert, or gravel).
Grazing angle: Angle between the emitted laser beam and the target’s surface normal.
Minimum Range ≤20m
Accuracy ±2m (RMS)
Repetition Rate Single-shot or adjustable 1~5Hz
Beam Divergence ≤0.5mrad
Pulse Energy ≥150μJ (at 25℃±5℃)
Pulse Width 6ns ±2ns
Accuracy Rate ≥98%
Continuous Operation ≥5min (full temperature range)
Parallelism of the Emission Optical Axis to the Mounting Reference Surface ≤0.3mrad
Mounting Surface Flatness ≤0.02mm (design-guaranteed)
Operating Temperature -40℃~+70℃
Storage Temperature -55℃~+75℃
Transportation Compliant with road/rail transport conditions
Shock Test (System-Level Validation) Withstands a half-sine wave pulse of 50g peak acceleration (490m/s²) with 11ms duration, applied 2 times on each of three mutually perpendicular axes.
Voltage DC 10~14V (with input polarity protection)
Average Power Consumption ≤2W
Peak Power Consumption ≤5W
External dimensions 62mm×43.5mm×34mm(L×W×H)
Weight ≤80g

Electrical Interface

The host machine communicates with the rangefinder via an 8-pin connector with 1.25mm pitch for interconnection testing. The pin definitions for the rangefinder’s power supply and communication port are listed in Table, and the position of Pin 1 is shown in Figure .

Table: Pin Definitions for Power and Communication Port

Pin Number Definition Remarks
1 RS422 RX+ RS422 Receive+
2 RS422 RX- RS422 Receive-
3 RS422 TX- RS422 Transmit-
4 RS422 TX+ RS422 Transmit+
5 GND Communication interface ground
6 +12V Power supply
7 GND Power ground
8 Reserved Reserved for future use

Key Technical Notes:

  1. RS422 Compatibility: Ensures stable serial communication in noisy environments.
  2. Dual Ground Pins: Separates communication and power grounds to minimize interference.
  3. Future-Proofing: Pin 8 is reserved for potential functional expansions (e.g., trigger signals or firmware updates).

Certifications

  • CE, FCC, RoHS compliant.

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