GK Semi

Laser Rangefinders

CX-CJ-4KM

Laser Rangefinder Module

Eye-safe 1535 nm · 4 km ranging in a 40 g module | For civil UAVs, smart power inspection and wide-area survey.

CX-CJ-4KM product photograph
Wavelength1535 ± 5 nm
Minimum range<15 m
Maximum range≥4 km
Accuracy≤±1 m RMS
Rate1–10 Hz

01 / Product introduction

Product introduction

A high-performance long-range ranging module built around a 1535 nm eye-safe erbium-glass laser. At ≤40 g it is the lightest module in the series, drawing ≤1 W in typical operation from a wide 5–28 V supply, and reaching beyond 4 km against large structures and terrain. Its size, weight and power profile suit civil UAV electro-optical gimbals, handheld observation optics, industrial inspection equipment and smart security systems.

02 / Core application scenarios

Core application scenarios

01
Civil UAVs and electro-optical gimbalsLong-range power-line inspection, wide-area GIS surveying, forest-fire monitoring and target ranging in disaster response.
02
Industrial surveying and infrastructure inspectionDeformation monitoring of major bridges and high-rise structures, transmission-tower and line clearance measurement, and open-pit mine terrain and stockpile surveys.
03
Smart security and campus managementPerimeter protection across very large sites, long-range target monitoring at airports and ports, and civil coastline security.
04
Outdoor sport and research observationHigh-end observation optics, meteorological sensing and long-range ecological field research.

03 / Core advantages

Core advantages

01
1535 nm eye-safe operationThe 1535 nm band meets Class 1 eye-safety requirements, allowing harmless measurement in public spaces and across civil applications.
02
4 km reach with ±1 m accuracyRanges to 4000 m against large structures and natural terrain with accuracy of ≤±1 m RMS and a selectable 1–10 Hz update rate.
03
Lightest in the seriesA ≤40 g module drawing ≤1 W average markedly extends flight endurance on battery-powered platforms such as UAVs.
04
Wide-supply flexibilityA 5–28 V input and ≤0.5 mrad beam divergence simplify integration across varied host platforms.

04 / Core technical specifications

Core technical specifications

Wavelength
1535 ± 5 nm
Minimum range
<15 m
Maximum range
≥4 km
Accuracy
≤±1 m RMS
Rate
1–10 Hz
Interface
TTL
Input
DC 5–28 V
Weight
≤40 g
Envelope
≤50 × 23 × 33.5 mm

04 / Project integration

Integration essentials

Interface
TTL
Input
DC 5–28 V
Weight
≤40 g
Envelope
≤50 × 23 × 33.5 mm