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LDR80K2 1064nm laser rangefinder designator for UAV pods

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Product Model:LDR80K2

The LDR80K2 1064nm laser target designator is an 80 mJ solid-state module that combines 1–20 Hz ranging and fixed-frequency coded illumination for long-range fire-control and surveillance systems. It offers ≥ 15 km measuring distance on NATO-type targets, ≥ 8 km laser illumination, ≤ 5 m accuracy and ≥ 98% valid ranging rate, with 24 V ± 4 V input, ≤ 55 W average power, RS-422 control and −40 °C to +60 °C environmental capability, making it ideal for UAV pods, vehicle turrets and coastal or border-defense EO/IR payloads.

Kuantiti

Contact Us

Senior Engineer, Yilin

Tel : +86 28 81076698

WhatsApp : +86 18000520222

ERDI Pre-Sales Notice & Customer Information

(Please Read Before Purchase or Inquiry) Thank you for your interest in ERDI TECH LTD. We are committed to providing customers worldwide with high-precision, high-reliability laser products and technical solutions. Before placing an order, please read the following information carefully to better understand our company, services, and purchasing policies.

  • About ERDI​

     ERDI is a professional manufacturer specializing in the research, development, and production of laser modules, laser measurement systems, and related optoelectronic components.
    We integrate design, R&D, production, and sales, with a focus on safety, innovation, and precision.

    Our products are widely used in:

    • Industrial measurement and alignment systems
    • Scientific research and educational applications
    • Optical instrumentation and laser testing
    • Consumer and OEM laser solutions

    ERDI operates certified facilities and maintains rigorous quality control to ensure that every product meets international standards.

  • 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.
  • 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.

  • 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.

  • Important Safety Reminder

    Before using any ERDI laser product:

    • Carefully read and follow the Laser Module Usage Precautions.
    • Always use appropriate laser protective eyewear.
    • Operate only in controlled environmentsunder trained personnel supervision.
      Failure to observe safety instructions may result in injury or equipment damage.
  • 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.

  • Final Statement​

    ERDI upholds the values of safety, integrity, and precision. We sincerely welcome customers from all over the world to visit our facilities, discuss cooperation, and experience our advanced laser technologies firsthand. Your satisfaction and trust are our highest pursuit.

After-Sales Service & Warranty Policy

We strive to provide high-quality laser modules and excellent customer service. Please read the following terms carefully to understand your rights and our responsibilities.

  • 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.
  • Customer Support

    For technical assistance, warranty claims, or safety inquiries, please contact our official service team through the contact information listed on erdicn.com.
    Our support engineers will provide professional guidance on installation, alignment, safety, and maintenance procedures.

Laser Module Usage Precautions

(Important – Buyers Must Read Before Use)

Operating laser modules involves potential optical and thermal hazards. To ensure safe and proper use, please read the following precautions carefully before powering on your laser product.

  • General Safety Warnings​

    • Invisible Radiation Warning– Some laser modules emit infrared (IR) or ultraviolet (UV) radiation that is invisible to the human eye. Never assume the laser is malfunctioning simply because you cannot see the beam. Always confirm that the power is disconnected before inspecting the module.
    • Do Not Look Directly into the Laser Aperture– Even when wearing certified laser safety goggles, never stare directly into or near the beam exit of a working laser module.
    • Avoid Reflected Beams from High-Power Lasers– Reflection from Class IV lasers (output power > 500 mW) can cause severe and permanent eye damage. Always wear wavelength-specific safety goggles when operating or aligning high-power laser systems.
    • Keep Away from Flammable Materials– Do not place flammable or explosive items (such as paper, cloth, leather, or plastics) in the laser path. Black or dark-colored materials absorb laser energy more easily and may ignite. (Exception: controlled material-burning experiments with proper fire protection.)
    • Avoid Direct Human Exposure– Class IIIa or higher lasers (≥ 5 mW) can burn skin or eyes. Never point a laser beam at any part of a person’s body.
    • Restrict Access to Trained Personnel Only – Keep all laser devices out of reach of untrained individuals, children, and pets.
  • Optical Path and Reflection Safety​

    • Never Aim Toward Glass Surfaces– Ordinary glass reflects roughly 4 % of incident light, which can redirect dangerous laser radiation into your eyes. Avoid operating lasers in front of mirrors or reflective windows.
    • Working Plane Awareness– When setting up an experimental platform, note the laser emission height. Do not position your head or eyes near this level during operation. Lenses and mirrors may reflect or refract light unexpectedly. Always align optical components downward or horizontally—never angle a beam upward.
    • Remove Reflective Accessories– Watches, jewelry, and other shiny objects can reflect laser light unpredictably. Remove them before use.
    • Infrared Beam Detection– IR lasers (wavelength > 800 nm) are almost completely invisible. Use a beam-viewing card, IR detector, or up-conversion screen to visualize the beam path safely.
    • Visual Brightness Misjudgment– Some wavelengths (below 430 nm or above 700 nm) appear much dimmer than their actual power output. Do not rely on visual brightness to judge beam intensity.
    • Pulsed Laser Caution– Pulsed lasers can have extremely high peak power even at modest average power levels. Verify that all optical elements and samples in your experiment exceed the laser’s damage threshold before exposure.
    • Prohibited Uses– It is strictly forbidden to point laser beams at moving vehicles, aircraft, or any area where light could distract or endanger others.
    • End-of-Beam Safety Stop– Always place a black anodized or matte metal plate at the end of your optical path to absorb residual energy and prevent laser leakage into surrounding areas.

    Low-Power Modules – ERDI laser modules rated below 1 mW are considered eye-safe under normal operating conditions and can be used without hazard when handled properly.

  • Recommended Protective Measures​

    • Protective Eyewear– Always wear certified laser safety goggles designed for the specific wavelength and power level of your module.
    • Appropriate Clothing– Light-colored or white long-sleeved clothing reduces the risk of heat absorption or ignition if stray laser light contacts the fabric.
    • UV Laser Protection– For ultraviolet lasers, apply broad-spectrum sunscreen (SPF 30 or higher) to exposed skin areas to minimize UV radiation effects.
    • Environmental Safety– Operate lasers in a controlled laboratory or industrial environment with minimal reflective surfaces. Ensure that all personnel nearby are informed of ongoing laser use and have received proper training.

TECHNICAL SPECIFICATIONS

Laser Wavelength

1064nm±1nm

Pump Mode

Side-pumped semiconductor (diode) pumping

Designation Frequency

Fixed Frequency: 45 ms – 125 ms (default 20 Hz)

Trigger Mode

Internal-Synchronization Illumination / External-Synchronization Illumination
(Trigger Delay: 304.0 μs ± 0.1 μs)

Output Energy

≥80m

Dimensions

≤150×102×55mm

Weight

≤850g

Designation Capability

≥10km

Q-Switch Type

Electro-optic Q-switch (EO Q-switch)

Pulse Width

15ns ±5ns

Beam Divergence

≤0.15mrad

Energy Instability

≤8%(RMS)

Laser Designation Performance

Short-duration irradiation mode: The irradiation time for each cycle is 17 seconds, followed by a 30-second interval. The system can perform up to 8 consecutive irradiation cycles.

Long-duration irradiation mode: The irradiation time for each cycle is 60 seconds, followed by a 45-second interval. The system can perform up to 4 consecutive irradiation cycles.

Optical Axis Parallelism Error Relative to Mounting Datum

≤0.5mrad

Ranging Performance

·  Minimum Measuring Distance: ≤ 300 m

·  Maximum Measuring Distance: ≥ 15 km
(under conditions of a 2.3 m × 2.3 m target, diffuse reflectivity ≥ 0.2, visibility ≥ 20 km, and relative humidity ≤ 70%)

·  Ranging Frequency: 1–20 Hz (up to 3 simultaneous targets)

·  Ranging Accuracy: ≤ 5 m

·  Probability of Valid Ranging: ≥ 98%

·  Continuous Ranging Operating Time: 90 s
(20 Hz continuous operation for 90 s, rest time ≤ 5 minutes before continuing ranging)

Communication Serial Interface

RS422

External Synchronization Interface

+5 V differential line driver/receiver, RS-422 interface (delay from external synchronization signal to laser emission: 304.0 μs ± 0.1 μs).

Laser Coding Mode

l Precise Frequency Coding

l Time Coding

l Pseudo-Random Coding

Period Accuracy

<+-1us

Power Supply

DC 20V ~ 28V

Power Consumption

During operation, the average power consumption is not more than 55W, and the peak power consumption is not more than 100W.

Low-Temperature Test

Operating temperature: −40 °C
Storage temperature: −45 °C

High-Temperature Test

Operating temperature: +60 °C
Storage temperature: +65 °C

Damp-Heat Test

Relative humidity: 95% ± 3%
Temperature: +35 °C ± 2 °C
Storage duration: 72 h

Shock Test

Waveform: Half-sine pulse
Peak acceleration: 10 g
Pulse duration: 11 ms

Vertical axis: ≥ 10 g
Lateral axis: ≥ 10 g
Longitudinal axis: ≥ 10 g

Shock waveform: post-peak sawtooth, duration 11 ms, applied along the X, Y, and Z axes, in both directions on each axis, three shocks per direction, for a total of 18 shocks.

Test condition:
The product shall be mounted on the shock test bench in its normal operating configuration and powered on during the test.

Post-test requirement:
After shock testing, the equipment shall operate normally.

Vibration

The equipment shall withstand flight vibration and the shocks occurring during takeoff and landing, and all components shall meet the environmental conditions of vehicle transportation.

The vibration profile is a swept-frequency spectrum:

l From 5 Hz to 16 Hz, constant-displacement sinusoidal vibration with an amplitude of 1.5 mm;

l From 16 Hz to 60 Hz, constant-acceleration sinusoidal vibration with an acceleration level of 1.5 g.

Each of the three axes shall be vibrated for 36 minutes.

Test condition:
The product shall be mounted on the vibration table in its normal operating configuration and powered on during the test.

Post-test requirement:
After vibration testing, the equipment shall operate normally.

OUTLINE DIMENSION(mm)

LDR80K2 1064nm laser target designator module

PIN INTERFACE

  1. The electrical connection interface consists of connectors J30J-21ZKP and J30J-04ZK, which are defined as follows:

Table 1 J30J-21ZKP Interface Definitions

J30J-21ZKP
pinout functionality clarification orientations note
1 TX+ RS422 + exports  RS422 communication interface
2 TX-  RS422 send - exports  
3 RX+  RS422 Receive + importation  
4 RX-  RS422 Receive - importation  
5 GND  RS422 Ground GND  
6 EN+ power supply enable (computing)   24V power supply enable switch
7 EN- power supply enable (computing)    
8-13   unoccupied    
14 A External Synchronous Differential+ (A) importation A, B are the A and B outputs of the differential chip (RS422 chip)
15 B External Synchronous Differential - (B) importation  
16 LED+ DC5V importation Indicator light power supply
17 LED- GND importation  
18-21        

able 2 J30J-04ZK Interface Definitions

J30J-04ZK
Pinout functionality clarification orientations note
A, B 24V Power supply importation bonus
C, D GND electric place importation (loanword) hack (computing)

2. Power supply interface: +24VDC±10%.

3. External trigger: RS422 differential signaling.

4. Cooling Mode: The cooling fan is located on the front of the unit.

Product Description

LDR80K2 80 mJ 1064 nm Laser Target Designator & Rangefinder Module

The LDR80K2 1064nm laser target designator is a compact 80 mJ solid-state module that combines long-range ranging and coded laser illumination in one rugged unit. Built for modern fire-control, UAV electro-optical gimbals and vehicle turrets, it provides NATO-target ranging out to the 15–20 km class and effective laser illumination to ≥ 8 km, while keeping system weight to about 850 g for SWaP-constrained platforms.

The laser head uses side-pumped semiconductor (LD) technology at 1064 ± 1 nm. Single-pulse energy is 80 mJ at 10–20 Hz, with a pulse width of 15 ± 5 ns and beam divergence ≤ 0.25 mrad, and the optical axis parallelism relative to the mounting datum is ≤ 0.5 mrad. This combination of high pulse energy, tight divergence and good pointing stability ensures a small, bright spot on target at long distances, which is critical for reliable seeker lock and cooperative engagement.

As a rangefinder, the LDR80K2 supports single-shot and continuous ranging from 1 to 20 Hz, returning up to three targets per measurement. The minimum measuring distance is ≤ 300 m and the maximum measuring distance is ≥ 15 km for a 2.3 m × 2.3 m diffuse NATO-type target (reflectivity ≥ 0.2, visibility ≥ 20 km, relative humidity ≤ 70%). Ranging accuracy is ≤ 5 m with a valid ranging probability of at least 98%. At 5 Hz, the module can operate continuously for 90 s and repeat this cycle up to three times before cooling, meeting the needs of tracking, search and fire-control missions.

In designation mode, the LDR80K2 uses a fixed internal designation frequency of 48 ± 4 Hz (nominal 20 Hz effective coding) and supports both internal-sync and external-sync illumination. An external synchronization interface with +5 V RS-422 differential signaling provides a calibrated trigger-to-emission delay of 304.0 µs ± 0.1 µs, allowing tight alignment with external fire-control computers or weapon systems. The module offers multiple laser coding modes, including precise frequency coding, time coding and pseudo-random coding, with a coding period accuracy better than 2.5 µs to meet the timing requirements of modern laser-guided munitions.

The electrical interface is based on RS-422 serial communication for control and status, together with dedicated pins for +24 V ± 4 V power input, ground, enable and external sync signals via J30J-21ZKP and J30J-04ZK connectors. Typical average power consumption is ≤ 55 W with peak power ≤ 100 W, making the module suitable for 24 V vehicle and airborne power buses. The internal electronics are conformally coated to improve resistance to moisture and contamination, and the design includes separate power-switch control so that the host system can independently switch the laser module on and off.

Environmentally, the LDR80K2 is specified for operation from −40 °C to +60 °C and storage from −45 °C to +70 °C. It passes damp-heat tests at 95% ± 3% relative humidity and +35 °C ± 2 °C for 72 hours, low-temperature endurance at −45 °C and high-temperature endurance at +65 °C. Shock tests use 11 ms post-peak sawtooth pulses applied along all three axes in both directions, with multiple shocks per direction, and the unit must work normally after testing. Vibration tests cover swept-sine excitation from 5 to 16 Hz at 1.5 mm amplitude and 16 to 60 Hz at 1.5 g in three axes for 36 minutes per axis. These characteristics make the LDR80K2 a robust choice for airborne, naval and ground platforms operating in harsh environments.

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