In fields such as drone obstacle avoidance, industrial automation, smart security, and robotic navigation, laser rangefinder modules have become indispensable core components due to their high precision and fast response. However, laser safety remains a key concern for users—how can we ensure that laser rangefinder modules operate efficiently while fully complying with eye protection and environmental safety standards? This article provides an in-depth analysis of laser rangefinder module safety classifications, international certification requirements, and selection recommendations to help you make safer and more compliant choices.
1. Laser Safety Levels: Key Differences from Class I to Class IV
According to the IEC 60825-1 standard issued by the International Electrotechnical Commission (IEC), laser devices are classified into Class I to Class IV, with higher classes indicating greater potential risks. For laser rangefinder modules, the most common classifications are Class 1, Class 1M, Class 2, and Class 2M. The core differences are as follows:
|
Safety Level |
Maximum Output Power |
Risk Description |
Typical Application Scenarios |
|
Class 1 |
<0.39mW (visible light) |
No risk, no protective measures required |
Consumer electronics, medical devices |
|
Class 1M |
<0.39mW (visible light) |
Avoid direct viewing through optical instruments |
Industrial ranging, automotive LiDAR |
|
Class 2 |
<1mW (visible light) |
Brief exposure (<0.25 seconds) is safe |
Handheld rangefinders, security monitoring |
|
Class 2M |
<1mW (visible light) |
Avoid direct viewing through optical instruments or prolonged exposure |
Outdoor surveying, drone obstacle avoidance |
Key Takeaway:
Class 1/1M is the gold standard for industrial-grade laser rangefinder modules, enabling “eye-safe” operation in complex environments. Class 3 and above lasers require strict usage restrictions and are generally not suitable for civilian or open environments.
2. International Certifications: A Hard Requirement for Compliance
To enter global markets, laser rangefinder modules must comply with the mandatory safety certifications of the target country/region. The two core standards are:
① IEC 60825 (International Standard)
Covers the EU, Asia, and other regions. Manufacturers must provide a complete laser radiation safety test report.
Certification focuses on wavelength range, output power, beam divergence angle, and protective design.
② FDA 21 CFR 1040.10 (U.S. Market Entry)
The U.S. Food and Drug Administration (FDA) classifies lasers similarly to IEC but requires additional warning labels such as “DANGER” or “CAUTION”.
For automotive LiDAR exported to the U.S., compliance with SAE J1455 (vehicle-grade vibration and temperature-humidity standards) is also required.
Our company’s laser rangefinder modules are all CE, FCC, RoHS, and FDA certified and come with complete test reports, ensuring globally compliant deliveries.
3. How to Choose the Right Safety Level? Scene-Based Selection Guide
① Consumer Electronics & Home Use
Recommended Level: Class 1
Reason: Completely eliminates user misoperation risks, making it ideal for close-to-body devices such as robot vacuums and smart home systems.
② Industrial Automation & AGV Navigation
Recommended Level: Class 1M
Reason: Strong resistance to ambient light interference, while optical design prevents direct laser exposure.
③ Outdoor Surveying & Construction Machinery
Recommended Level: Class 2M
Reason: Balances precision and safety in long-distance (50–1000m) rangefinding, requiring additional safety labeling.
4. Conclusion
The safety level of a laser rangefinder module is not just about compliance—it is also an essential aspect of corporate social responsibility. Choosing internationally certified Class 1/1M products that fit the application scenario minimizes risks and ensures long-term, stable operation of the equipment.
Post time: Mar-25-2025