The Complex Safety Landscape of AR Glasses
Near the Brain. Near the Risks.
Augmented reality glasses represent one of the most challenging wearable devices to certify under IEC 62368-1. They combine high-powered processors, sophisticated display systems, multiple wireless radios, and optical components—essentially a supercomputer attached to your head.
Unlike other wearables, AR glasses must meet both electrical safety standards and optical safety requirements. They also generate significant heat from processing AR content while sitting directly on your head, making thermal management critical.
How AR Glasses Push the Limits of Safety Standards
All Eyes on Optical Safety
AR glasses project light directly toward your eyes. We test that light intensity, wavelength, and exposure duration don't exceed safe limits. This includes testing under normal use and fault conditions where the optical system might malfunction.
Thermal Management Heats Up
AR glasses contain powerful processors that generate heat near the head. Unlike a pocketed smartphone, these devices sit against your head continuously. We test thermal performance under maximum processing load and evaluate how heat dissipation affects user comfort and safety.
Always-On Connectivity
AR glasses typically include WiFi, Bluetooth, and often cellular connectivity, and GPS, all crowding a tiny frame. This concentration of wireless radios near the head requires careful evaluation of electromagnetic exposure.
Laser-Like Displays at Eye Level
Whether using micro displays, waveguides, or direct projection, AR display systems have unique safety considerations. We test for electrical safety, thermal performance, and optical safety across all display technologies.
Simplifying The AR Glasses Certification Process
AR glasses certification typically takes 6-8 weeks due to the complexity and multi-standard requirements. We coordinate testing across electrical safety, optical safety, and wireless certification requirements.
What could possibly go wrong? Plenty, that’s why we test. We identify potential failure modes and their safety implications, then design tests to verify that safety systems work under both normal and worst-case conditions.
Electrical Safety Testing
We verify proper isolation between circuits, test fault protection systems, and mitigate shock or fire risk. This includes testing the charging system and any removable components.
Thermal Testing
We find the hot spots, before your customers do. Special attention is paid to areas that contact the head.
Optical Safety Testing
We put light output intensity, wavelength distribution, and exposure patterns under our lens. This includes testing under extreme or worst-case scenarios.
Electromagnetic Compatibility
We verify that the multiple wireless systems don't interfere with each other or create excessive electromagnetic exposure.
Avoiding Common Design Pitfalls
When lenses, batteries, and projectors come and go, so do the hazards. AR glasses manufacturers face several recurring challenges during certification:
Beat the Heat: Processors capable of real-time AR processing generate significant heat. Dissipating this heat without making the device uncomfortable requires careful thermal design.
Battery Life vs. Performance: AR processing is power hungry, but users expect reasonable battery life. This often leads to aggressive power management that needs safety oversight.
Optical System Complexity: There’s often more than meets the eye with AR optical systems. We help manufacturers identify failure modes and implement appropriate safeguards.
Wireless System Integration: Multiple wireless radios in close proximity can interact in unexpected ways. We test these interactions to ensure they don't compromise safety.
When AR Glasses Require an Extra Set of Eyes
Eye Tracking: Systems that monitor eye movement use infrared light and cameras. We test these systems to ensure safe light exposure and verify that data processing doesn't affect other safety systems.
Hand Tracking: Computer vision systems for hand tracking require significant processing power. We evaluate thermal implications and ensure these systems don't interfere with safety-critical functions.
Spatial Audio: AR glasses often include sophisticated audio systems. We test these for electrical safety and verify they don't interfere with warning sounds.
Environmental Sensors: Cameras, LIDAR, and other sensors need electrical safety testing. We also evaluate how sensor data processing affects overall device safety.
Removable Components: Some AR glasses have removable lenses, batteries, or processing units. Each removable component needs individual safety evaluation.
One Device, Many Standards
When it comes to AR glasses, we make multi-standard compliance work together.
IEC 62368-1: Electrical safety for IT equipment
IEC 62471: Photobiological safety of lamps and lamp systems
IEC 62479: Assessment of low power electronic devices for electromagnetic exposure
Various wireless standards: For WiFi, Bluetooth, and cellular connectivity.
We provide one coordinated plan, one efficient timeline, and one comprehensive report, ready for regulators and product launch.
Regulatory Pathways
AR glasses and their regulatory requirements come down to their capabilities:
Consumer Electronics: Basic AR glasses follow standard consumer electronics regulations.
Medical Devices: AR glasses used for medical applications may need FDA clearance or CE marking as medical devices.
Professional Equipment: AR glasses for industrial use may need additional safety certifications.
We help manufacturers set their sights on which regulatory pathway applies to their specific device and use case.
Level Up Your Software Safety
AR glasses rely heavily on software for safety-critical functions. We evaluate:
Thermal Management Software: How software controls processor performance to prevent overheating.
Optical Safety Software: How software limits light output and responds to sensor failures.
Fault Detection: How software detects and responds to hardware failures.
Update Management: How software updates affect safety systems and what safeguards prevent updates from compromising safety.
Why Partner with Product Safety Consulting for AR Glasses?
We've been working with AR glasses manufacturers since the technology emerged. Our engineers understand the category inside and out, with intimate knowledge of both technical challenges and the regulatory hurdles that these complex devices present.
We offer integrated testing services that address electrical safety, optical safety, and wireless certification requirements all under one roof. This integrated approach saves time and reduces costs compared to juggling multiple testing laboratories.
Our pre-compliance testing services can identify and root out potential issues early on, when design changes are still practical and cost effective.