LDR80K2 1064nm laser rangefinder designator for UAV pods

TECHNICAL SPECIFICATIONS

OUTLINE DIMENSION(mm)

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

able 2 J30J-04ZK Interface Definitions

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.