ERDI's 1570nm long-range laser rangefinder module is designed for integration into electro-optical systems requiring long-distance measurement. It combines millijoule-level laser output energy, a single-aperture optical design, and an RS422 communication interface in an integrated unit for OEM applications.

In a recorded test, the module demonstrated a 50 km ranging result against a building measuring approximately 4 × 6 meters. This test provides a practical reference for engineering teams evaluating long-range laser ranging solutions for their own systems.

In this article, we introduce the test demonstration, key technical specifications, and integration considerations for OEM projects.

50 km Laser Ranging Test Demonstration

The video below shows ERDI's 1570nm laser rangefinder module during a long-range measurement test.

Test distance: 50 km

Target: A building measuring approximately 4 × 6 meters

The recorded video shows the module displaying a distance measurement at 50 km. This demonstration offers a practical reference for evaluating the module's long-range measurement capability.

Actual ranging performance depends on factors including target size and reflectivity, atmospheric visibility, and the optical configuration of the host system. Results may vary under different operating conditions, so application-specific testing is recommended when evaluating performance requirements.

For projects involving long-distance measurement, this test can serve as a starting point for technical discussions about target conditions, system configuration, and integration requirements.

Key Features of ERDI's 1570nm Laser Rangefinder Module

The module combines long-range measurement capability with an integrated optical and electronic design.

The following specifications provide an overview of the module's key performance and integration parameters.

Parameter	Specification
Laser wavelength	1570 ± 5 nm
Output energy	≥15 mJ @ 25 Hz
Ranging frequency	1–25 Hz
Specified ranging distance	>60 km under specified conditions
Minimum ranging distance	300 m
Ranging accuracy	≤5 m
Beam divergence	≤0.4 mrad
Pulse width	10–20 ns
Energy instability	≤8% RMS
Communication interface	Full-duplex RS422
Trigger modes	Internal synchronous / external synchronous
Dimensions	≤255 × 155 × 122 mm
Weight	≤2.9 kg
Operating temperature	-40°C to +60°C

The specified ranging distance of over 60 km applies under defined test conditions: visibility of 80 km and a 10 × 10 m target with reflectivity above 20%. The 50 km video shows a separate test result using a building measuring approximately 4 × 6 meters.

Single-Aperture Design for OEM Integration

Optical layout is an important consideration when integrating a laser rangefinder into a larger electro-optical system.

ERDI's module uses a single-aperture configuration, with the transmitting and receiving optical paths integrated behind one external optical aperture. This arrangement gives system developers a defined optical interface to consider when planning the host system's design.

Depending on the overall system architecture, the module may be evaluated for integration into long-range electro-optical observation equipment, tracking systems, and specialized measurement platforms.

Before selecting a module for integration, OEM developers should review several factors:

• Mechanical space: Confirm the available installation volume and mounting arrangement.
• Electrical requirements: Verify the power supply and operating power budget.
• Communication and control: Check RS422 communication, command requirements, and trigger synchronization.
• Optical alignment: Evaluate the optical interface and alignment requirements within the host system.
• Operating environment: Consider temperature, atmospheric conditions, target characteristics, and the system's intended operating conditions.

These factors help determine whether the module is suitable for a particular system. ERDI can discuss the available technical information with customers based on their project requirements.

Potential Applications

The 1570nm laser rangefinder module may be considered for OEM projects where long-distance measurement is an important system function.

Potential application areas include:

Long-range electro-optical observation

Adding distance measurement to optical observation equipment can provide range information alongside other system data.

Tracking and monitoring systems

The module may be evaluated for systems that require distance measurements to support tracking or monitoring functions, subject to the performance requirements of the complete system.

Custom optical and measurement platforms

OEM manufacturers developing specialized electro-optical equipment can assess the module's mechanical dimensions, optical configuration, communication interface, and ranging performance against their own design requirements.

Application suitability depends on the intended target, operating environment, system architecture, and required performance. Project-specific evaluation is recommended before final integration.

Discuss Your 1570nm Laser Ranging Project with ERDI

Are you developing a long-range electro-optical system or evaluating a 1570nm laser rangefinder for OEM integration?

Contact ERDI to discuss your required ranging distance, target characteristics, and system interface requirements. Our team can provide further technical information to support your project evaluation.

Alternatively, complete the inquiry form below, and include your project requirements and preferred contact details.