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ERDI LDR40K1 1064nm High-Energy Laser Target Designator – 40mJ Military Targeting System

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The ERDI LDR40K1 is a next-generation 40mJ laser target designator and rangefinder module designed for precision-guided weapon systems, UAV payloads, and airborne electro-optical targeting pods.
Operating at 1064 ±3nm, the LDR40K1 integrates long-range measurement, coded target designation, and real-time multi-target indication, making it ideal for advanced surveillance, targeting, and fire-control systems.

Product Model:LDR40K1
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Contact Us

Senior Engineer, Yilin

Tel : +86 28 81076698

WhatsApp : +86 18000520222

FAQ

  • Is ERDI a manufacturer?​

    Yes, ERDI is a manufacturer engaged in R&D and production.​
  • Is trading with ERDI secure?​

    ERDI has stores on major global platforms such as Amazon, Alibaba International Station, and Made-in-China. It is a trustworthy factory.​
  • How long does it take to deliver samples?​

    Generally, samples can be delivered within one week.​
  • Do you provide OEM/ODM/OBM services?​

    Yes, we do.​
  • What is ERDI's quality assurance?​

    ERDI has technical service centers and distribution units worldwide to provide timely responses.
  • What is the product warranty period?​

    Except for man-made damage, we will replace any defective products with new ones within one year, and provide lifetime free maintenance.​
  • What technical services are available?​

    ERDI implements an overall technical solution for each product. We can provide on-site one-to-one technical services at the customer's company.
  • How long does it take to receive the products after purchase?​

    ERDI usually uses DHL air express. Generally, products can be received within 7 days worldwide. For urgent needs, we can also arrange direct flights from China to deliver goods globally, and they can usually be received within 2 days.
  • Can ERDI's products be sold as agents?​

    Yes, they can. Please contact sales@erdicn.com.​
  • Is there a commission for referring customers to ERDI?​​​

    Yes, if the transaction is successful, ERDI will directly give a commission of 2%-5% of the sales amount.
  • What are the benefits of registering as an ERDI member?​​

    1.Enjoy cumulative member discounts.​
    2.Qualified members can get free samples.​​
    3.Can receive commissions for referring customers.​​
    4.Can become a distributor.​​
    5.Can enjoy free travel in China.

MAIN FUNCTIONS

The main functions of the LDR40K1 Laser Designator/Rangefinder are as follows:

  • Responds to laser designation commands and performs laser illumination using specified internal and external synchronization encoding modes.
  • If no stop command is received after illumination starts, the system automatically stops after completing one illumination cycle.
  • Supports laser code configuration.
  • Performs laser rangefinding.
  • If no stop command is received after initiating continuous ranging, the system automatically stops after 5 minutes (1 Hz)or 1 minute (5 Hz).
  • Provides multi-target indication capability.
  • Includes reverse polarity protection for the power supply.
  • Records and reports the total number of emitted laser pulses.

TECHNICAL SPECIFICATIONS

Parameter

Specification

Working Wavelength

1064 ± 3 nm

Pulse Average Energy

≥ 40 mJ

Energy Stability

Pulse energy variation ≤ 10% of the average within one illumination cycle

Pulse Width

15 ns ± 5 ns

Beam Divergence

≤ 0.4 mrad

Ranging Frequency

1 Hz / 5 Hz / Single shot

Ranging Accuracy

± 2 m (1 σ)

Minimum Range

≤ 100 m

Maximum Range

≥ 6000 m (at 10 km visibility, target reflectivity 0.2, target size 2.3 m × 4.6 m)

Continuous Ranging Duration

5 min (1 Hz) / 1 min (5 Hz)

Measurement Reliability

≥ 98%

Laser Encoding Accuracy

± 1 µs

Base Encoding Frequency

20 Hz

Continuous Illumination Duration

Short cycle: ≥ 18 s illumination, ≤ 10 s interval, continuous for 8 cycles
Long cycle: ≥ 47 s illumination, ≤ 30 s interval, continuous for 2 cycles
After completing one long and one short illumination, reactivation interval ≤ 30 min

Power Supply

DC 20 V – 28 V

Consumption

Average ≤ 50 W, Peak ≤ 100 W

Dimensions

≤ 115 mm × 65 mm × 60 mm

 Weight

≤ 460 g

Operating Temperature

–40°C to +60°C

Storage Temperature

–45°C to +70°C

APPLICATIOS

• Airborne electro-optical targeting pods
• UAV reconnaissance and laser designation payloads
• Ground-based fire-control and observation systems
• Laser-guided munition support and calibration platforms
• Defense and security laser rangefinding operations

OUTLINE DIMENSION

LDR40K1 laser rangefinder/designator measures

PIN INTERFACE

  • Communication interface: one RS-422 serial port.
  • External trigger interface: provision for an external coding trigger. The external trigger input accepts TTL-level signals, 3.3 V logic, rising-edge triggered. Minimum pulse width: >10 µs.
  • Connector: see figure below for pinout and connector type.40mJ Laser Target Designator Module

Connector interface definitions are shown in Table .

 

Table  – Electrical Interface Definitions

Pin No.

Signal Name

Description

1

422-GND

RS-422 ground

2

24V

Power supply +

3

24V

Power supply +

4

24V GND

Power supply −

5

24V GND

Power supply −

6

422_RX+

Host → Laser Rangefinder +

7

422_RX−

Host → Laser Rangefinder −

8

422_TX−

Laser Rangefinder → Host −

9

422_TX+

Laser Rangefinder → Host +

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