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US 2026/0211193 A1Published application
Augmented reality display with freeform optics and integrated prescription lens
AssigneeGoogle Inc.
InventorsYi Qin, Oscar Alberto Martinez
Life of this patent
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Abstract
A dual-component lightguide employs two freeform surfaces separated by a gap with prescription lens integration. A world-side component includes a spherical world-side surface and a freeform eye-side surface. An eye-side component includes a freeform world-side surface that conforms to the freeform eye-side surface of the world-side component and an eye-side surface that is shaped to provide corrective optics based on a desired prescription.
Claims21
An eyewear display system, comprising:
- a lightguide comprising:
- a first component comprising a world-side surface and a freeform eye-side surface;
- a second component comprising a freeform world-side surface and an eye-side surface shaped to impart corrective optics based on a desired prescription;
- and
- a gap between the first component and the second component.
2 more elements
A method comprising:
- receiving ambient light at a spherical world-side surface of a world-side component of a lightguide of an eyewear display system;
- coupling light generated at a micro-display into the world-side component of the lightguide, the lightguide having a freeform eye-side surface separated from a freeform world-side surface of an eye-side component of the lightguide by a gap, to direct the light generated at the micro-display through the world-side component of the lightguide via total internal reflection;
- and
- transmitting through an eye-side surface of the eye-side component of the lightguide light outcoupled from the lightguide via an outcoupler and ambient light received at the spherical world-side surface, wherein the eye-side surface of the eye-side component of the lightguide is shaped to apply corrective optics based on a desired prescription.
1 more element
A lightguide, comprising:
- a world-side component comprising a spherical world-side surface and a freeform eye-side surface;
- and
- an eye-side component comprising a freeform world-side surface and an eye-side surface shaped to apply corrective optics based on a desired prescription, wherein the freeform eye-side surface of the world-side component and the freeform world-side surface of the eye-side component are separated by a gap.
Dependencies are inferred from the claim text.