ERDI LDR40K3 （5KM） Laser Target Designator Module – High-Precision Industrial Laser System
ERDI LDR40K3 （5KM） Laser Target Designator Module – High-Precision Industrial Laser System
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Compact High-Precision Laser Solution for UAV, Electro-Optical Pods and Advanced Platforms
The ERDI LDR40K3 is a compact high-performance 1064nm solid-state laser rangefinder and target designator module designed for integration into advanced electro-optical systems, including UAV gimbals, airborne pods, vehicle-mounted systems, and precision sensing platforms.
Featuring ≥25mJ pulse energy, configurable beam divergence, and coded laser designation capability, the LDR40K3 delivers accurate long-range measurement beyond 5.2 km with excellent reliability and stability.
With its compact mechanical design, lightweight structure, low power consumption, and MIL-style environmental adaptability, the LDR40K3 provides an ideal laser solution for customers requiring high precision, fast response, and flexible system integration.
Key Features
High Precision Long-Range Measurement
- Measurement range up to 5,200 meters
- Ranging accuracy: ±2 meters
- Vehicle-sized target detection capability
- Single-shot and continuous ranging modes supported
The LDR40K3 provides reliable distance measurement data for real-time decision-making in complex environments.
Integrated Laser Designation Capability
The built-in coded laser designation function supports:
- Designation range ≥2 km
- 20Hz coded illumination frequency
- Configurable designation modes
- Accurate laser target marking
It is suitable for integration with electro-optical payload systems requiring precise laser guidance and target positioning.
Compact Design for System Integration
Designed for space-limited platforms:
- Weight: ≤380g
- Dimensions: 68mm × 52mm × 90mm
- Power supply: 20–28V DC
The compact form factor enables easy installation into:
- UAV electro-optical pods
- Drone gimbal payloads
- Airborne optical systems
- Vehicle-mounted platforms
- Customized optoelectronic equipment
Application Scenarios
UAV Electro-Optical Payload Systems
The LDR40K3 provides lightweight laser measurement and designation capability for unmanned aerial platforms.
Typical applications include:
- UAV reconnaissance systems
- Drone-based observation platforms
- Long-distance target measurement
- Intelligent aerial sensing systems
Airborne Surveillance Platforms
Combined with EO/IR imaging systems, the LDR40K3 enables:
- Accurate distance acquisition
- Target positioning assistance
- Real-time data transmission
- Enhanced situational awareness
Vehicle-Mounted Electro-Optical Systems
The compact laser module can be integrated into stabilized optical systems for:
- Mobile observation platforms
- Remote sensing equipment
- Precision measurement systems
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | LDR40K3 |
| Laser Type | 1064nm Solid-State Laser |
| Wavelength | 1.064 ± 0.003 μm |
| Pulse Energy | ≥25 mJ |
| Ranging Distance | 120m to ≥5,200m (Vehicle-sized target) |
| Designation Distance | ≥2 km |
| Ranging Accuracy | ±2m |
| Ranging Frequency | 1Hz / 5Hz / Single-shot |
| Designation Frequency | 20Hz (Coded) |
| Beam Divergence | ≤0.6 mrad |
| Hit Rate | ≥98% |
| Communication Interface | RS-422 / TTL |
| Supply Voltage | 20–28V |
| Average Power Consumption | ≤50W |
| Operating Temperature | -40°C to +60°C |
| Dimensions | 68mm × 52mm × 90mm |
| Weight | ≤380g |
Control Functions
The LDR40K3 supports comprehensive digital control functions:
Ranging Control
- Ranging command response
- Stop command response
- Distance data output after each measurement pulse
- Range gate configuration
- Automatic ranging timeout protection
Designation Control
- Configurable designation mode
- Programmable laser coding
- Designation command response
- Automatic designation cycle stop
- Distance and status output during operation
System Monitoring
- Power-on self-test
- Periodic self-test
- Status information reporting
- Laser pulse count recording
Electrical Interface
TTL Communication Interface
Connector:
- Socket: MOLEX 53048-0810
- Mating Plug: MOLEX 51021-0800
| Pin No. | Signal | Description |
|---|---|---|
| 1 | 24V | Power Supply + |
| 2 | 24V | Power Supply + |
| 3 | 24V GND | Power Return (-) |
| 4 | 24V GND | Power Return (-) |
| 5 | Reserved | — |
| 6 | TTL_RX | Host → Laser Module |
| 7 | TTL_TX | Laser Module → Host |
| 8 | TTL_GND | Serial Ground |
Why Choose ERDI LDR40K3?
✔ Compact and lightweight laser module
✔ Long-range precision measurement capability
✔ Integrated ranging and designation functions
✔ Designed for UAV and electro-optical applications
✔ Flexible communication interface
✔ Reliable performance in harsh environments
✔ Customization support available
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ERDI Pre-Sales Notice
OEM / ODM / OBM Services
ERDI supports full-range customization including:
- OEM (Original Equipment Manufacturing)– Products manufactured under your brand or part number.
- ODM (Original Design Manufacturing)– Custom optical or mechanical design based on your specifications.
- OBM (Original Brand Manufacturing)– Private-label solutions with our in-house R&D and branding support.
We provide technical co-development, logo engraving, packaging customization, and batch production services to meet both small-scale and mass-production requirements.
Global Presence and Trade Reliability
ERDI has established official stores on leading global platforms including Amazon, Alibaba International Station, and Made-in-China.com, allowing customers worldwide to purchase safely and conveniently. We are a verified and trusted factory, not a reseller, and we ensure that all transactions, quotations, and logistics follow transparent and secure trade practices.
Sample and Lead Time
To help customers evaluate our products and performance, we offer sample orders for most product categories.
- Standard samplesare typically delivered within one week after order confirmation.
- Customized modulesmay require additional processing time depending on design complexity and optical requirements.
Our logistics team will provide real-time tracking and documentation for every shipment.
Technical Support and Service System
ERDI maintains technical service centers and distribution partners worldwide, enabling rapid customer response.
We provide:
- Comprehensive technical consultation and project evaluation
- One-on-one on-site technical assistanceat the customer’s facility when required
- Lifetime after-sales supportand technical maintenance guidance
Each laser product is delivered with a full set of user documentation, including Laser Module Usage Precautions and Safety Guidelines.
Quality Assurance and Warranty
ERDI implements strict multi-stage quality control throughout production:
- Incoming material inspection
- Optical alignment verification
- Output power and wavelength calibration
- Safety and durability testing under standard conditions
We guarantee that all products leaving our factory meet design and performance specifications.
Except for man-made damage, we will replace any defective unit within one year free of charge and provide lifetime maintenance support thereafter.
For more details, please refer to our After-Sales Service & Warranty Policy.
Communication and Order Confirmation
To ensure efficient service, please confirm the following before placing an order:
- Product model, wavelength, output power, and working voltage/current
- Whether you require custom mechanical dimensions, optical configurations, or driver circuitry.
- Packaging, labeling, and shipping preferences.
- Any specific export or compliance documentation needed for your country.
Our sales engineers will provide an official quotation and delivery schedule upon confirmation of all specifications.
After-Sales Service & Warranty Policy
Customer Support
For technical assistance, warranty claims, or safety inquiries, please contact our official service team through the contact information listed onerdicn.com.
Our support engineers will provide professional guidance on installation, alignment, safety, and maintenance procedures.
Product Origin and Quality Assurance
- All ERDI products are manufactured directly by the factory, ensuring consistent quality and full traceability.
- We provide a diverse rangeof laser modules and laser distance measurement modules to suit various industrial, educational, and research applications.
- Every product is tested and inspectedbefore shipment to guarantee that it meets specification standards.
Return and Exchange Policy
- Customers may request a return or exchange within 30 daysof receiving the goods, provided that:
- The product remains in original condition, unused, and without affecting secondary sales.
- A valid reason for return or exchangeis provided.
- Upon approval, we will replace or refund according to our service policy.
- The buyer is responsible for shipping costsassociated with returns, exchanges, or repairs, based on international freight cost rules.
Warranty Coverage
- The main functional componentsof ERDI laser products are covered by a 2-year warranty from the date of purchase, excluding cosmetic appearance.
- Within the first 12 months, if a verified manufacturing defect occurs, we will replace the item with a brand-new productfree of charge.
- Replacement of cosmetic or housing components (e.g., enclosure, labeling, or exterior parts) may incur a reasonable cost feebased on material expenses.
- Warranty does not cover:
- Damage due to misuse, improper installation, or modification.
- Operation outside the recommended power supply or temperature range.
- Accidental or physical damage, including drops, fire, or liquid ingress.
Receiving Inspection
- Upon delivery, please inspect the parcel immediately in the presence of the courier.
- If there is any quantity discrepancy, visible damage, or mismatch, do not signthe delivery receipt.
- Once the package is signed for (by you, family, or colleagues), it is considered accepted as correct and complete.