US 12,742,967 B2 · Incorporating components inside optical stacks of headmounted devices

Abstract

A wearable device includes circuitry on substrate. The substrate is coupled to an optical element in an optical stack. A refractive index of the substrate perceptually matches a refractive index of the optical component. The circuitry is imperceptible to the viewer wearing the device, despite that the circuitry has a view of (or, as an example, an unobstructed line of sight to) the viewer's eye. The circuitry can include a camera or an emitter, or both. The camera captures one or more reflections of the emitter from the viewer's eye. In a specific embodiment, the substrate includes a waveguide, Fresnel lenses, or lens to bend light rays around from the circuitry to achieve the imperceptibility. In alternative embodiment, the circuitry can be a piezoelectric device, liquid crystal controller, or any electronic circuitry relevant for a wearable device.

Claims21

Dependent claims

A wearable device for a viewer, the wearable device comprising:

a first view optical stack comprising one or more optical elements through which the viewer's first eye views one or more objects, in front of the wearable device, located at one or more distances from the viewer's first eye;
a substrate in physical contact with an optical element in the one or more optical elements of the first view optical stack, the substrate's optical refractive index matching the optical element's refractive index to prevent optical refractive index changes between the substrate and the optical element;
an embedded device affixed to the substrate, wherein the embedded device is a non-mirror light blocking component;
wherein the embedded device comprises an eye tracker;
wherein the embedded device is located in a spatial region that light rays from an object located along an expected view direction do not reach, wherein the expected view direction represents a straight line extending from the viewer's first eye to the embedded device.

2 more elements

Dependencies are inferred from the claim text.

Incorporating components inside optical stacks of headmounted devices

Life of this patent

Incorporating components inside optical stacks of headmounted devices

Life of this patent

Abstract

Claims21