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ERDI LDR100K1 1064nm Ultra-High Energy Laser Target Designator – 100mJ Military Targeting Solution

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Product Model:LDR100K1

The LDR100K1 1064nm laser rangefinder designator is a 100 mJ long-range module for artillery fire-control, airborne pods and vehicle turrets. It offers ≥ 20 km ranging with ≤ 5 m accuracy, 1–25 Hz multi-target ranging, 20 Hz coded laser designation and ≥ 12 km illumination distance. With a 230 × 130 × 96 mm, ≤ 1.7 kg form factor, 24 V ± 4 V supply, < 60 W power consumption, RS-422 full-duplex control and −40 °C to +60 °C operating range, it is well suited as a core laser engine in modern precision-guided and ISR systems.

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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

≥100mJ@20Hz

Dimensions

≤230×130×96mm

Weight

≤1.7kg

Designation Capability

≥12km

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

Laser designation center frequency (verification): 20 Hz

Short-duration laser designation mode:
For each cycle, the laser designation time is 17 s, with an interval of 10 s. Up to 4 consecutive cycles are supported.

Long-duration laser designation mode:
For each cycle, the laser designation time is 90 s, with an interval of 60 s. Up to 4 consecutive cycles are supported at +25 °C (room temperature) or −40 °C, and 1 cycle is supported at +60 °C.

After completing one long-duration and one short-duration laser designation sequence, the interval before the next laser designation shall be no more than 10 minutes.

Optical Axis Parallelism Error Relative to Mounting Datum

≤0.5mrad

Ranging Performance

  • Minimum Measuring Distance: ≤ 300 m
  • Maximum Measuring Distance: ≥ 20 km
    (under conditions of a 2.3 m × 2.3 m target, diffuse reflectivity ≥ 0.2, visibility ≥ 25 km, and relative humidity ≤ 70%)
  • Ranging Frequency: 1–25 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

  • Precise Frequency Coding
  • Time Coding
  • Pseudo-Random Coding

Period Accuracy

<+-1us

Power Supply

DC 24V±4V

Power Consumption

< 60 W (room-temperature standby current: < 0.2 A, peak operating current: < 5 A)

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:

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

PIN INTERFACE

  1. The electrical connection interface consists of the J30J-21ZKPand J30J-04ZK
    The interface definitions are as follows:

Table 1 — J30J-21ZKP Interface Definition

J30J-21ZKP

Pin

Function

Description

Direction

Remarks

1

TX+

RS-422 TX+

Output

 RS-422 Communication Interface

2

TX-

RS-422 TX−

Output

3

RX+

RS-422 RX+

Input

4

RX-

RS-422 RX−

Input

5

GND

RS-422 GND

GND

6

EN+

Power Enable

 

24 V Power Enable Switch

7

EN-

Power Enable

 

8-13

 

Not Connected / NC

 

 

14

A

External Sync Differential + (A)

Input

A and B are the A/B differential outputs of the RS-422 driver chip

15

B

External Sync Differential − (B)

Input

16

LED+

DC5V

Input

Laser Designation Power Supply

17

LED-

GND

Input

18-21

 

 

 

 

Table 2 — J30J-04ZK Interface Definition

J30J-04ZK

Pin

Function

Description

Direction

Remarks

A、B

24V

Power Supply

Input

Red

C、D

GND

Power GND

Input

Black

  1. Power Supply Interface:+24 VDC ±10%
  2. External Trigger:RS-422 differential signal
  3. Cooling Method:Cooling fan located at the front of the device

Product Description

LDR100K1 100 mJ 1064 nm Long-Range Laser Rangefinder & Target Designator

The LDR100K1 1064nm laser rangefinder designator is a high-energy solid-state laser module developed for long-range artillery fire-control, airborne targeting pods, UAV payloads and armored vehicle turrets. It combines precision distance measurement and coded laser designation in a single rugged unit, using a coaxial transmit/receive common-aperture design with no active temperature control, so the system can be switched on and enter “ready to fire” status quickly. The overall envelope is ≤ 230 × 130 × 96 mm and the weight is ≤ 1.7 kg, giving a compact form factor for 12 km+ engagement ranges.

The laser is a side-pumped LD solid-state source at 1064 nm ± 1 nm with electro-optic Q-switching. Single-pulse energy reaches ≥ 100 mJ at 20 Hz, with pulse width 15 ns ± 5 ns, beam divergence ≤ 0.15 mrad and RMS energy instability ≤ 8%. This combination of high pulse energy, tight divergence and good stability produces a small, bright spot on diffuse 2.3 m × 2.3 m or larger targets, supporting long-range designation and accurate seeker lock-on. The optical axis parallelism relative to the mounting reference is ≤ 0.5 mrad, simplifying alignment with daylight cameras and thermal imagers in multi-sensor payloads.

As a rangefinder, the LDR100K1 supports single-shot and continuous ranging from 1 Hz up to 25 Hz. The minimum measuring distance is ≤ 300 m, while the maximum measuring distance is ≥ 20 km for vehicle-sized diffuse targets (reflectivity ≥ 0.2, visibility ≥ 25 km, relative humidity ≤ 70%). Range accuracy is ≤ 5 m with a probability of correct ranging ≥ 98%. Multi-target ranging returns up to three targets per measurement, with near, middle and far-target selection to handle clutter, background structures and partially obscured targets. At 20 Hz, the system can perform continuous ranging for 90 s, followed by a rest period of no more than 5 minutes before the next cycle.

In designation mode, the verification center frequency is 20 Hz. Short-designation mode provides up to 17 s of continuous laser-on time with 10 s intervals and supports four consecutive cycles. Long-designation mode provides 90 s of continuous illumination with 60 s cooling intervals and also supports four cycles at +25 °C or −40 °C; under +60 °C high-temperature conditions one long-designation cycle is allowed per sequence. After one short and one long designation cycle, the next sequence can start after an interval of ≤ 10 minutes. The effective designation and illumination distance reaches ≥ 20 km, making the module suitable for long-range precision-guided munitions, artillery shells and air-to-ground weapons.

The LDR100K1 supports multiple coding modes including precise frequency coding, time coding and pseudo-random coding. Coding period accuracy is better than ±1 µs. An external synchronization interface with RS-422-level differential signaling provides a calibrated external trigger-to-laser delay of 304.0 µs ± 0.1 µs, enabling close coupling with external fire-control computers, navigation systems or mission processors. Internal and external sync modes are software-selectable, and the user can configure time-code patterns, internal illumination period, duty cycle and number of cycles through the serial protocol to match specific weapon or platform requirements.

Electrically, the module operates from a 24 V DC ± 4 V supply with total power consumption < 60 W. Typical standby current is < 0.2 A and peak operating current is < 5 A. Power is routed via a J30J-04ZK connector with dual +24 V and dual GND pins to reduce voltage drop and improve reliability. A second connector (J30J-21ZKP) provides RS-422 TX/RX pairs, RS-422 ground, enable lines (EN+/EN–), external sync inputs (A/B) and a 5 V output for external LED status indication. A dedicated enable input allows the host to control power to the laser module independently from the rest of the system.

Control and monitoring are implemented over a full-duplex RS-422 link at 115200 bps, using 8 data bits, 1 start bit, 1 stop bit and no parity. The communication protocol uses a fixed frame header, length, command, data and checksum fields, and supports a rich set of commands: start/stop laser, single and continuous ranging, external trigger delay setting, distance gate configuration and query, internal illumination timing and cycle setup, time-code programming, internal/external trigger mode switch, LD current level, Q-switch delay and pulse-width optimization, APD and Q high-voltage setting, receiver power control, fan start temperature, automatic/manual mode switching, and firmware information query. Status frames report up to three measured distances, ambient and LD temperatures, cumulative pulse count and multiple status words covering ready/standby state, sensor health, over-temperature alarms, LD current selection, receiver state and external sync status.

To meet harsh field environments, the LDR100K1 is specified for operation from −40 °C to +60 °C and storage from −45 °C to +65 °C. It withstands damp-heat tests at 95% ± 3% relative humidity and +35 °C ± 2 °C for 72 hours, and is qualified for swept-sine vibration from 5–16 Hz at 1.5 mm amplitude and 16–60 Hz at 1.5 g in three orthogonal directions for 36 minutes per axis. The system also endures 10 g shocks along vertical, lateral and longitudinal axes with 11 ms half-sine or post-peak sawtooth waveforms, while powered on and required to operate normally afterward. These characteristics make the LDR100K1 a robust core engine for long-range fire-control, coastal defense, border surveillance, airborne ISR and other demanding 1064 nm laser targeting applications.

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