1 Scope

This Standard addresses the safety of electrical and electronic equipment within the field of virtual reality, augmented reality and mixed reality technologies with a rated voltage not exceeding 600 V.

EXAMPLE VR/AR/MR head-mounted displays, holographic displays, AR/MR smart glasses, hand-held VR/AR/MR devices and interactive virtual simulators.

Particular aspects addressed by this Standard include the means to reduce, as far as practicable, the effects of visually induced motion sickness,These requirements cover visual opacity, flicker, skin sensitizationbiocompatibility, heat exposure to the eye, biomechanical stress and optical occlusion to some extent.

This Standard does not address the following:

– psychological effects, such as modification of phobias and enhancement or repression of emotions,

– neurological effects on the visual systems, such as modification of stereoscopic vision, and visual acuity, and

– vestibular disturbances, such as nausea and vomiting.

This Standard is intended to supplement the requirements addressing risk of electrical shock, fire, thermal burn, and other general product safety aspects that are already covered by the CAN/CSA-C22.2 No. 62368-1/UL 62368-1 requirements for wearable equipment. Annex D summarizes these aspects.

Summary of Topics

This revision of ANSI/CAN/UL 8400 dated January 17, 2025 includes the following changes in requirements:

– Revision of Age requirements: 12.3.2.1

– Revisions per UL 62368-1 and revision of Functional Safety requirements: 4.3, Table 1A, 4.3A, 4.3B, 4.4, Table 2, Clause 8, 10.3, Table 3, and Clause 13

– Revision of Skin Compatibility requirements: Clause 7, 12.2.4, E.1, E.2, and Annex I

– Revision of Biomechanical Stress requirements: 9.1, 9.2, 9.3, Figure 1, 9.4, Figure 3, and Figure 4

– Revision of Safety and Warning Instructions: 12.1, 12.2.1, 12.3.1, 12.4.4, and 12.5

– Clarification of Transmittance testing: Clause 5, Annex A, Annex F, and Annex I

– Clarification of Flicker testing: Clause 6

– Revisions to incorporate UL 4200A, Products Incorporating Button Batteries or Coin Cell Batteries: Clause 2 and 4.6

– Revision to scope of the Standard: Clause 1

– Miscellaneous editorial updates: 3.2.1 – 3.2.4, 3.3.1, 3.3.2, 3.3.4, 3.3.6, 3.5.3, 3.5.5, 3.5.10, 3.5.12, 3.5.21 – 3.5.25, 3.5.29 – 3.5.31.