TECHNICAL SPECIFICATIONS
| Project | Performance Indicators |
| Model | LRF0105C |
| Laser Wavelength | 1535±5nm |
| Eye- safety | Class Ⅰ |
| Divergence Angle | ≤1mrad |
| Laser Energy | ≥100 μJ |
| Launch Lens Diameter | Φ8 mm |
| Receiver Lens Diameter | Φ20 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, 5Hz, 10Hz |
| Number of multi-target detections | Up to 3 targets |
| Ranging Accuracy | ±2 m |
| Range Resolution | ≤0.1 m |
| Precision Rate | ≥98% |
| False Alarm Rate | ≤1% |
| Pin-in-lead package model | FWF08002-S06B13W5M |
| Supply Voltage | DC3～5 V |
| Standby power consumption | ≤1mW |
| Average power consumption | ≤0.8W |
| Peak Power Consumption | ≤1.5W |
| Weight | ≤29±1 g |
| Dimension (L×W×H) | Φ34mm×47.5mm |
| 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
PIN interface
- a) Power supply voltage: 3~5V;
The host computer realizes cross-linking test with the rangefinder through a 6PIN connector (FWF08002-S06B13W5M (Teska connector)). The pin definition of the communication port on the rangefinder is shown in the table.
Product electrical pin definition
| Pin | Identification number | Definition of electrical characteristics | Cable color | |
| P-1 | COM | Input power negative pole | Power supply | |
| P-2 | VIN+ | Input power positive pole | ||
| P-3 | - | (Empty) | ||
| P-4 | TTL_TXD | Signal output port | From rangefinder to host computer | |
| P-5 | TTL_RXD | Signal input port | From host computer to rangefinder | |
| P-6 | POWER_CTL | Low power control port | ＞0.7V to turn on, ＜0.15V to turn off | |
Connector connection 1 pin position
Product Description
LRF0105C 1535nm Mini Eye-Safe Laser Rangefinder Module for Embedded UAV, Handheld and Smart Sensor Platforms
The LRF0105C is a compact 1535nm eye-safe laser rangefinder module designed for integration into UAV gimbals, handheld optics, robotic sensors and other embedded systems that require precise distance measurement with minimal size and power. Based on ERDI’s self-developed erbium-glass laser, it is classified as Class 1 eye-safe and uses a single-pulse TOF (Time of Flight) method to calculate target distance.
With a typical pulse energy of ≥100µJ, divergence ≤1mrad and optimized transmit / receive apertures (Φ8mm launch, Φ20mm receive), the LRF0105C can measure NATO targets (2.3m×2.3m) out to ≥3000m and human-sized targets (0.5m×1.7m) to ≥1500m under 30% reflectance and ≥5km visibility. Minimum range is ≤15m, and the module supports single-shot ranging plus 1Hz, 5Hz and 10Hz continuous modes, with up to three simultaneous targets and range accuracy of ±2m, resolution ≤0.1m and a valid hit rate ≥98% with false alarm rate ≤1%.
The module runs from a DC 3–5V supply with typical standby power ≤1mW, average power ≤0.8W and peak power ≤1.5W, making it suitable for battery-powered UAV payloads, handheld monoculars, smart binoculars and low-power edge devices. The cylindrical form factor (Φ34mm × 47.5mm, ≤29g) allows direct mounting inside small gimbal cameras, compact EO sensors and constrained enclosures where volume and weight are critical.
Communication with the host system is via a 3.3V TTL serial interface, using a 6-pin FWF08002-S06B13W5M connector with dedicated pins for power, TX/RX and low-power control. The module supports multiple baud rates (115200bps factory default, 57600bps, 9600bps) and a structured packet protocol, including device self-test, single and continuous ranging, first/last/multi-target mode, frequency configuration, gate (min/max distance) settings and counters for total shots and per-power-on shots. This makes it easy to embed the LRF0105C into UAV flight computers, handheld controllers, robot navigation units and industrial control PCs.
Environmentally, the LRF0105C meets MIL-STD-810G shock and vibration requirements, with an operating temperature range of −40 to +70°C and storage from −55 to +75°C, supporting deployment on airborne, vehicle-mounted and outdoor fixed platforms. Typical applications include small UAV gimbal payloads for altitude and obstacle sensing, vehicle and turret EO/IR heads, handheld laser rangefinder monoculars and binoculars, industrial machine-vision systems, perimeter surveillance sensors and smart robots requiring compact, eye-safe distance measurement.
For front-end protection, an external optical window with AR coating optimized for 1525–1545nm and ≥99% transmittance is recommended, optionally combined with hydrophobic or hard coatings depending on the environment. The window thickness should be kept within 2–4mm, with sufficient mechanical margin between effective aperture and outer diameter, and the emission axis aligned within 2°–4° to the window normal; the air gap between window and antenna should be minimized to reduce loss. These integration guidelines allow designers to build sealed, ruggedized optics without sacrificing ranging performance.
Combining high ranging performance, low power, robust environmental design and a rich TTL command set, the LRF0105C provides a ready-to-integrate 1535nm eye-safe ranging core for next-generation UAV payloads, soldier-borne devices, industrial sensors and autonomous systems where precise distance data and human eye safety must be guaranteed at the same time.