Detailed LRF0310C Specifications
The technical material below is retained for this model only. Do not transfer a range, pulse, interface, mechanical or safety value from another 1535 nm product.
TECHNICAL SPECIFICATIONS
|
Project |
Performance Indicators |
|
Model |
LRF0310C |
|
Laser Wavelength |
1535±5nm |
|
Eye- safety |
Class Ⅰ |
|
Divergence Angle |
≤0.6 mrad |
|
Laser Energy |
≥100 μJ |
|
Launch Lens Diameter |
Φ8 mm |
|
Receiver Lens Diameter |
Φ16 mm |
|
Measuring Range （Reflectance 30%; visibility ≥ 5km.） |
≥ 4000m @60% Reflectivity, Building Target ≥3000m @30% Reflectivity, 2.3×2.3m Target ≥1500m @30% Reflectivity, 0.5×1.7m Target ≥800m @30% Reflectivity, 0.2×0.3m Target |
|
Minimum Range |
≤15 m |
|
Ranging Frequency |
Single, 1Hz ~10Hz |
|
Number of multi-target detections |
Up to 3 targets |
|
Ranging Accuracy |
±1 m |
|
Range Resolution |
≤0.1 m |
|
Precision Rate |
≥98% |
|
False Alarm Rate |
≤1% |
|
Supply Voltage |
4.5V～16V |
|
Standby power consumption |
≤ 0.6W |
|
Average power consumption |
≤1.5W@1Hz |
|
Peak Power Consumption |
≤7W@12V |
|
Weight |
≤32±1 g |
|
Dimension (L×W×H) |
48mm×30.5mm×21mm |
|
Operating Temperature |
-40～+70 ℃ |
|
Storage Temperature |
-55～+75 ℃ |
|
Impact Resistance |
Meet the MIL-STD-810G testing standard |
|
Vibration Resistance |
Meet the MIL-STD-810G testing standard |
OUTLINE DIMENSION(mm)
The overall dimensions of the mechanical and optical interfaces are shown in Figure 2.
Figure 2 Mechanical and Optical Interface Diagram
The position of the center of mass is shown in Figure 3.
Figure 3 Schematic Diagram of the Center of Mass Position
PIN INTERFACE
Interface definition: The host computer communicates and tests with the rangefinder through a 6PIN connector. The pin definitions of the power supply and communication ports on the rangefinder side are shown in Table 2.
Table 2 Pin Definitions of Power Supply and Communication Ports on the Rangefinder Side
|
Pin |
Definition |
Description |
Cable color |
|
P-1 |
VIN+ |
Power supply, 4.5–16V |
|
|
P-2 |
VIN- |
Power supply, ground |
|
|
P-3 |
POWER_ON |
Module power switch, TTL_3.3V level; |
|
|
P-4 |
UART_TX |
Module on (>2.7V), module off (<0.3V) |
|
|
P-5 |
UART_RX |
Serial port transmitting end, TTL_3.3V level |
|
|
P-6 |
GND |
Serial port receiving end, TTL_3.3V level |
Model-specific conditions and limits
Conditions are retained only when the source states them. They are not reconstructed from a nominal range or wavelength.
Read the controlled model table for its stated target, reflectance, visibility, temperature, rate and acceptance conditions. No additional condition has been inferred for this model.
Pulsed Time-of-Flight Ranging
A pulsed rangefinder estimates one-way distance from the round-trip delay of an accepted optical return. The equation is general engineering context, not an additional LRF0310C specification.
Pulse energy describes emitted energy per pulse; its effect cannot be separated from pulse width, divergence, optical losses, receiver threshold and the stated target/atmosphere conditions. It is not a substitute for a model-specific near- or long-range acceptance test.
Source-stated application context
Application labels indicate evaluation context, not automatic fitness for a finished system.
Product Description
LRF0310C 1535nm Eye-Safe Laser Rangefinder Module for UAV Gimbals, Optical Pods and Border Surveillance
The LRF0310C is a 1535nm Class I eye-safe laser rangefinder module designed for UAV gimbals, optical pods, handheld systems and fixed border surveillance sensors. Built around an erbium-glass laser operating at 1535±5nm, it uses time-of-flight (TOF) ranging to provide precise distance data while staying compliant with international eye-safety requirements, making it suitable for both defense and civilian platforms.
With a pulse energy ≥100µJ, beam divergence ≤0.6mrad and launch/receive apertures of Φ8mm and Φ16mm, the LRF0310C achieves a NATO target (2.3m×2.3m) range of ≥3000m under 30% reflectance and ≥5km visibility, while typical operating conditions ensure stable performance for vehicle-size and building targets. The minimum range is ≤15m, ranging accuracy is ±1m, range resolution is ≤0.1m, the valid hit rate is ≥98% and the false alarm rate is ≤1%. Up to three targets can be detected in a single shot, supporting first-target, last-target and multi-target modes for cluttered scenes.
The module supports single-shot and continuous ranging from 1Hz to 10Hz, allowing system designers to balance update rate and power budget. Range gating functions enable minimum and maximum distance limits to be configured, which helps suppress near-field clutter or far-field background noise in complex environments such as urban streets, coastal lines, forest edges or industrial sites. A built-in shot counter records total laser shots and per-power-on shots, simplifying system health monitoring and maintenance planning.
Electrically, the LRF0310C accepts a wide 4.5–16V DC supply, providing flexibility for direct connection to UAV and vehicle power buses. Standby power consumption is ≤0.6W, average power is ≤1.5W at 1Hz and peak power is ≤7W at 12V, making the module suitable for SWaP-sensitive airborne and portable platforms. Communication is via a 3.3V TTL UART through a 6-pin connector, with configurable baud rates (115200bps factory default, plus 57600bps and 9600bps). A simple command set covers self-test, single and continuous ranging, first/last/multi-target selection, baud-rate and frequency settings, range gates, version queries, serial number readout and shot-count queries.
Mechanically, the module measures 48×30.5×21mm and weighs ≤32g, giving integrators a compact block that can be embedded directly into gimbal cameras, mast-mounted EO/IR heads, handheld binoculars or multi-sensor pods. It is qualified for −40 to +70°C operating temperature, −55 to +75°C storage and meets MIL-STD-810G shock and vibration standards, so it can withstand the stresses of UAV flight, vehicle recoil, maritime spray and long-term outdoor deployment.
For systems requiring a sealed front window, ERDI recommends an external optical window with AR coating optimized for 1525–1545nm and ≥99% transmittance, combined with hydrophobic or hard coatings depending on the environment. Total transmittance after coating and integration should remain ≥97%, and the window geometry should follow the datasheet guidelines for effective aperture, outer diameter and spacing to minimize transmission loss and back-reflection—critical for border towers, coastal surveillance masts and unattended ground sensors in harsh weather.
Beyond classical rangefinding, 1535nm eye-safe modules such as the LRF0310C are widely used for UAV navigation and obstacle awareness, EO/IR gimbal range-finding, border and perimeter security, coastal and critical-infrastructure monitoring, mobile mapping and industrial machine vision, where reliable distance data, eye-safety and compact size are all critical. The 1.5µm band offers good atmospheric penetration in haze and light rain, is invisible to most night-vision image intensifiers and is compatible with telecom-grade fiber components, making it a natural choice for advanced multi-sensor systems and networked surveillance architectures.
Confirm short- and long-distance acceptance conditions
- Define minimum distance, target material, reflectance, size and incidence angle.
- Check receiver recovery, optical-axis overlap and strong-return handling at the intended near limit.
- Verify supply tolerance, peak current, grounding, interface levels, connector and timing with the ordered revision.
- For long-distance acceptance, state target geometry, visibility, weather, background and required detection probability.
- Test with the installed window, boresight, field of view, enclosure and thermal path rather than a bare module alone.
- Evaluate accessible emission, labels and failure conditions again for the finished laser product under IEC 60825-1.
Questions to resolve before design release
Does a stated maximum range apply to every target?
No. A stated range must be read with its target and environmental conditions. Dark, small, oblique, wet or partially obscured targets and degraded visibility can reduce received signal.
Does 1535 nm itself establish the laser classification?
No. Classification concerns accessible emission from the finished laser product. The module statement and final instrument assessment are distinct.
Can a long-range claim be used as the minimum range?
No. Minimum-distance behaviour depends on the particular transmit/receive geometry, receiver timing and strong-return management documented for the model and host system.
Product evidence and general technical context
The model PDF controls model claims. Public references below explain general engineering principles only.
- ERDI LRF0310C model PDFModel-specific technical evidence.
- System Design of a Pulsed Laser RangefinderOptical Engineering 30(3), 1991 - link budget, background, noise, detection and range error.
- The Short-Range, High-Accuracy Compact Pulsed Laser Ranging SystemSensors 22(6), 2146, 2022 - pulsed-ToF equation, timing error, reflectivity and temperature effects.
- Laser system range calculations and the Lambert W functionApplied Optics 48(4), B1-B7, 2009 - range performance versus atmospheric transmission, target and system parameters, and threshold SNR; its 1.06 µm example is general context, not ERDI model data.
- Monostatic all-fiber rangefinder systemApplied Optics 54(25), 7687-7694, 2015 - a measured case study of shared-aperture geometry and receiver-recovery loss; it does not establish an ERDI model limit.
- Light Transmission in Fog: The Influence of Wavelength on the Extinction CoefficientApplied Sciences 9(14), 2843, 2019 - measured and modeled wavelength-dependent fog attenuation.
- IEC 60825-1:2014Laser-product classification and accessible-emission requirements; final equipment requires system-level assessment.
- Practical application of pulsed “eye-safe” microchip laser to laser rangefindersOpto-Electronics Review 21(3), 2013 - a peer-reviewed 1535 nm rangefinder implementation; use for general transmitter/receiver and atmospheric-design context, not model specifications.