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NLM15000 1570nm Long Range Laser Rangefinder Module
The NLM15000 is an ultra-long-range 1570nm laser rangefinder module powered by a Class 1 eye-safe Optical Parametric Oscillator (OPO) laser core. Delivering verified telemetry up to 30km (15km on 2.3×2.3m standard targets and 5km on mini UAVs), it integrates high pulse energy (≥6mJ), adjustable 1–20Hz measurement rates, and rugged environmental resilience for airborne observation pods, vehicle-mounted gimbals, and coastal defense systems.
- Class 1 Eye-Safe OPO Core: 1570nm emission with ≥6mJ pulse energy and high atmospheric haze/dust penetration.
- Extreme Telemetry Envelope: Telemetry reach up to 30,000m max, 15,000m on NATO targets, and 5,000m on small drones.
- Dynamic High-Rate Tracking: 1Hz to 20Hz adjustable PRF with ±3m RMS precision and multi-target discrimination.
- Rugged Payload Integration: Forced air-cooled chassis (≤1.5kg) operating from -40°C to +65°C via RS422 interface.
NLM15000 1570nm Laser Rangefinder Module Overview
The NLM15000 is an ultra-long-range 1570nm laser rangefinder module designed for mission-critical electro-optical tracking, coastal surveillance, and counter-UAV systems. Built around an Optical Parametric Oscillator (OPO) pulsed laser source emitting at 1570nm, the module guarantees absolute Class 1 eye-safe operation while delivering exceptional beam coherence through dense atmospheric haze, dust, and solar glare. Featuring a narrow 0.7mrad beam divergence, a wide Φ60mm receiver aperture, and high repetition rates up to 20Hz, the NLM15000 laser module delivers continuous real-time distance tracking on high-speed dynamic targets up to 30,000 meters.
NLM15000 1570nm Laser Rangefinder Module Primary Capabilities
- High-Energy 1570nm OPO Core: Emits ≥6mJ pulse energy (15ns pulse width) in the 1570nm band, combining Class 1 eye safety with high signal returns.
- Ultra-Long Detection Capability: Telemetry range reaches ≥30km on typical high-reflectivity targets, ≥20km on large buildings (0.6 reflectivity), ≥15km on 2.3m×2.3m targets, and ≥5km on 0.3m×0.3m drone targets.
- High-Frequency Tracking (Up to 20Hz): Adjustable 1Hz to 20Hz measurement frequency enables smooth trajectory reconstruction on fast maneuverable targets.
- Multi-Target Discrimination: Advanced echo logic supports simultaneous detection of up to 3 distinct targets with range gating and first/last target identification.
- Rugged Environmental Adaptation: Forced air-cooled architecture ensures stable operation across -40°C to +65°C and altitudes up to 4,500m.
- Synchronized Bus Architecture: RS422 interface (customizable to TTL/RS485) paired with external differential hardware synchronization for electro-optical gimbal timestamping.
NLM15000 1570nm Laser Rangefinder Module Technical Data Matrix
| Engineering Parameter | Technical Specification Baseline |
|---|---|
| Product Model | NLM15000 1570nm Laser Rangefinder Module |
| Laser Operating Wavelength | 1570 nm (Optical Parametric Oscillator / OPO) |
| Laser Eye Safety Grade | Class 1 Eye-Safe (IEC 60825-1 Compliance) |
| Single Pulse Laser Energy | ≥ 6 mJ |
| Laser Pulse Width | 15 ns ± 5 ns |
| Beam Divergence Angle | 0.7 mrad ± 0.1 mrad |
| Optical Receiving Aperture | Φ60 mm |
| Optical Emission Aperture | Φ50 mm |
| Maximum Ranging Capability | ≥ 30,000 m (Typical high-reflectivity targets, visibility ≥ 25km) |
| Large Target Range (Reflectivity 0.6) | ≥ 20,000 m (Visibility ≥ 25km) |
| Standard Target Range (2.3m × 2.3m) | ≥ 15,000 m (Reflectivity 30%, Visibility ≥ 25km) |
| Human Target Range (0.5m × 1.7m) | ≥ 9,000 m (Reflectivity 30%, Visibility ≥ 25km) |
| Small UAV Target Range (0.3m × 0.3m) | ≥ 5,000 m (DJI Phantom 4 class, Reflectivity 30%) |
| Minimum Ranging Blind Zone | 100 m |
| Ranging Accuracy (RMS) | ± 3 m |
| Measurement Accuracy Rate / False Alarm | Accuracy Rate ≥ 98% | False Alarm Rate ≤ 1% |
| Measurement Frequency (PRF) | 1 Hz to 20 Hz continuously adjustable |
| Multi-Target Detection Capability | Up to 3 targets with first/last target identification and distance gating |
| Communication Interface | Standard RS422 (TTL / RS485 customizable) |
| External Synchronization | Differential external synchronization input (+ / -) |
| Operating DC Voltage Input | DC 18V to 30V (24VDC nominal) |
| Power Consumption Profile | Standby ≤ 20W | Average ≤ 70W | Peak ≤ 150W |
| Preheating Warm-Up Time | ≤ 1 minute (at room temperature) |
| Cooling Mechanism | Integrated forced air cooling |
| Physical Envelope Dimensions | ≤ 201 mm × 120 mm × 80 mm (Customizable upon request) |
| Total Hardware Mass | ≤ 1.5 kg |
| Electrical Connector Interface | Y50X-12119TKZ circular chassis receptacle |
| Operating / Storage Temperature | Operating: -40°C to +65°C | Storage: -55°C to +70°C |
| System Testability & Upgrade | Built-in self-checking (BIT), online telemetry, and serial firmware upgrade |
NLM15000 Structural Dimensions & Mechanical Layout
The NLM15000 laser module is housed in a ruggedized, corrosion-resistant chassis measuring 201mm × 120mm × 80mm with a total mass of ≤1.5kg. Featuring dual forward-facing optical barrels—a Φ50mm laser emission aperture and a Φ60mm high-transmission receiver aperture—the unit delivers exceptional optical throughput. Top-mounted cooling vents ensure continuous thermal stabilization during 20Hz continuous bursts, while standardized base mounting holes provide rigid coupling onto stabilized multi-axis gimbals.
Figure 1: Mechanical outline dimensions and optical aperture configuration of the NLM15000 module.
Figure 1: Structural layout of the NLM15000 module detailing the 201×120×80mm chassis, dual Φ50mm/Φ60mm optical apertures, and Y50X connector location.
NLM15000 Electrical Interface Blueprint & Pinout Assignments
The electrical and data bus connectivity is routed through a rugged Y50X-12119TKZ circular connector. Multi-pin power feeds, isolated RS422 serial lines, and hardware synchronization lines guarantee electromagnetic compatibility (EMC) in complex radio environments.
| Pin Number | Signal Designation | Input / Output Type | Functional Description |
|---|---|---|---|
| 1, 2 | 24V+ | Power Input | Main DC Power Supply Positive (18VDC to 30VDC Operating Window) |
| 3, 11 | Power Switch | Control Input | Hardware Power Switch Control Terminals |
| 4 | RS422_RX+ | Signal Input | Laser Rangefinder Serial Receive Positive (Rx+) |
| 5 | RS422_RX- | Signal Input | Laser Rangefinder Serial Receive Negative (Rx-) |
| 6 | RS422_GND | Signal Ground | RS422 Dedicated Signal Ground Reference |
| 7 | Sync Input+ | Signal Input | External Hardware Synchronization Input Positive |
| 8 | Case Ground | Chassis Ground | Chassis Protective Shield Ground |
| 9, 10 | GND | Power Ground | Main DC Power Supply Return Ground Path |
| 12 | RS422_TX+ | Signal Output | Laser Rangefinder Serial Transmit Positive (Tx+) |
| 13 | RS422_TX- | Signal Output | Laser Rangefinder Serial Transmit Negative (Tx-) |
| 15 | Sync Input- | Signal Input | External Hardware Synchronization Input Negative |
| 14, 16, 17, 18, 19 | NC | — | Reserved / Factory Internal Configuration (Do Not Connect) |
NLM15000 1570nm Laser Rangefinder Module Industrial Applications
- Airborne Surveillance Pods & Reconnaissance UAVs: Delivers long-distance ground target identification and continuous tracking from high-altitude stabilized gimbals.
- Coastal Protection & Maritime Observation: High atmospheric penetration through fog and maritime haze allows accurate distance locking on distant vessels and maritime intrusions.
- Counter-UAV & Low-Altitude Airspace Defense: Detects small rogue drones at distances up to 5km, providing early trajectory coordinates for defense systems.
- Vehicle-Mounted Mobile Reconnaissance: Line-Replaceable Unit (LRU) design ensures stable operation on mobile surveillance vehicles under continuous road vibration.
- High-Precision Electro-Optical (EO/IR) Systems: Seamlessly pairs with daylight zoom cameras and thermal imagers for multi-sensor observation platforms.
Engineering Integration Guidance Note: Explore our comprehensive Laser Rangefinder Modules and complete wavelength portfolio to evaluate range performance, or contact our engineering specialists directly to request full technical protocol manuals and detailed specification sheets for the NLM15000 laser module.
