In laser rangefinder modules, Laser Beam Divergence is a key parameter that determines ranging accuracy, ranging range, and target energy density. Whether for industrial-grade or military laser rangefinder module, Laser Beam Divergence is a primary means to improve module performance.
As a leading manufacturer of laser rangefinder modules, ERDI TECH LTD has rich experience in beam quality and Laser Beam Divergence design, and this article will focus on applications in this regard.
What is Laser Beam Divergence?
Laser Beam Divergence refers to the angle at which a laser beam gradually spreads as it travels from the emission port. It is a core parameter describing the directionality of the laser beam, usually expressed in mrad. Generally speaking, a smaller Laser Beam Divergence means the laser beam can remain more concentrated at longer distances and is less likely to diverge. It can not only reach the target accurately but also more easily receive the signal reflected from the target, making the ranging capability more precise and stable. Therefore, the longer the ranging distance of a laser ranging module, the smaller the corresponding Laser Beam Divergence.
Common Laser Beam Divergence Data in laser rangefinder module:
|
Application Name |
Divergence Angle Range |
Core Description (Adapted Laser Type + Key Requirements) |
|---|---|---|
|
Portable Rangefinder (Handheld) |
1–3 mrad |
Lightweight and easy to operate, generally used for ranging within 500m. |
|
Industrial/Automated Ranging |
0.8–2.5 mrad |
Vibration-resistant and stable, suitable for workshop automated production. |
|
Vehicle/UAV Ranging |
0.3–1.5 mrad |
Lightweight with high ranging accuracy, having certain environmental resistance and vibration resistance. |
|
Long-Distance Ranging Module |
≤0.1 mrad |
Resistant to environmental interference, high precision, suitable for military and surveying platforms. |
|
Short-Distance Ranging Module |
0.5–2 mrad |
Low power consumption, compact size for easy integration, suitable for individual soldier equipment and small robots. |
|
Laser Weapon |
≤0.05 mrad |
Long-distance energy concentration, generally equipped with anti-jamming systems. |
|
Laser Guidance |
0.1–0.5 mrad |
Assists in precise target locking, resistant to battlefield electromagnetic interference and smoke interference. |
The laser rangefinder modules produced by ERDI TECH LTD mainly focus on small-range divergence angle design, achieving more accurate and stable ranging.
ERDI TECH LTD —— Building High-Performance Laser Rangefinder Modules with Adaptable Laser Beam Divergence
ERDI TECH LTD's production lines and Laser Beam Divergence ranges:
1535nm Laser: High beam quality, 4 ~15 mrad
1535nm Laser Rangefinder Module: 0.3~1 mrad. The ranging targets are mostly NATO targets (2.3m2.3m) and vehicle targets (4m6m). For short-distance (3km~4km) ranging modules, ERDI adopts a Laser Beam Divergence of 0.6mrad~1mrad, achieving a ranging accuracy of ±1m within the short range. For medium and long-distance laser ranging modules, ERDI adopts a Laser Beam Divergence of 0.3mrad, achieving a ranging accuracy of ±2m within the range.
905nm Laser Rangefinder Module: 6~12 mrad. ERDI's 905nm laser ranging module series mostly targets large building targets, with a ranging range mainly concentrated between 20m~2000m, and the ranging accuracy within the short range is cm-level or <1m.
1064nm Laser Rangefinder Module and Target Designator: 0.2~0.6 mrad. Military laser target designator with a detection distance of 3km~18km and a ranging accuracy of ±1m.
This Laser Beam Divergence design based on ranging targets gives ERDI's laser rangefinder modules obvious advantages in short-distance and long-distance ranging, irradiation, marking and other tasks. It also supports OEM and ODM parameter customization, making it an ideal choice for many customers.
Summary:
Laser Beam Divergence is a key parameter determining whether a laser rangefinder module can measure far and accurately. With its control of Laser Beam Divergence, high-energy design, modular structure and strict quality management, ERDI TECH LTD provides high-performance ranging solutions for military and industrial customers.
Contact ERDI TECH
If you need technical information, specification sheets, prototype tests or customized solutions for the laser rangefinder module, please contact the ERDI TECH engineering team.
📧 yeva@erdimail.com (responses within 24 hours)
We will provide the most suitable laser technology solutions for your platform.