US20250225737
2025-07-10
Physics
G06T19/006
The wearable device system for cross-reality vision integrates virtual reality (VR), augmented reality (AR), real-world, and mixed reality images. At its core, the system features an optical combiner that receives VR content from an external device. The optical combiner is supported by a frame, which is adjustable and pivotally connected to a wearable band. This setup allows the observer's eyes to be partially covered by the optical components, facilitating simultaneous viewing of virtual and real-world images.
The optical combiner comprises two free-form optical components and a microdisplay. The first component includes a non-aspheric surface with a vertex radius of curvature above 7, reflecting light from the microdisplay through multiple reflection surfaces. The second component mirrors the curvature of the first and is glued to it, enhancing the light management capabilities of the device. Both components are constructed from the same material to ensure consistency in optical performance.
The device offers a real-world field of view up to 30 degrees below a straight-ahead view and an augmented reality field of view up to 30 degrees above it. This design enables users to perceive both real-world scenes and projected augmented reality images seamlessly. Similarly, the system can project virtual reality images within this augmented field of view, enhancing immersive experiences.
The first free-form optical component consists of multiple reflection surfaces, each playing a critical role in directing light from the microdisplay to the observer's eyes. These surfaces include a first reflection surface facing the microdisplay, a second reflection surface oriented towards the first, and a third reflection surface completing the light path. The surfaces are designed as XY-polynomial forms, optimizing light refraction and reflection.
The optical combiner maintains a visual distance of 17 mm to 22 mm from the observer's eyes, ensuring comfortable viewing. A lens cover on the outer surface of the combiner prevents external light interference. The system's modular design allows for various combinations of its components, offering flexibility in application and customization according to user needs.