Heads-up display
AssigneeGoogle Inc.
InventorsHayes S. Raffle, Chia-Jean Wang
Life of this patent
Estimating the term…
Abstract
Embodiments of an apparatus comprising a light guide including a proximal end, a distal end, a display positioned near the proximal end, an eye-measurement camera positioned at or near the proximal end to image eye-measurement radiation, a proximal optical element positioned in the light guide near the proximal end and a distal optical element positioned in the light guide near the distal end. The proximal optical element is optically coupled to the display, the eye-measurement camera and the distal optical element and the distal optical element is optically coupled to the proximal optical element, the ambient input region and the input/output region. Other embodiments are disclosed and claimed.
Claims20
An apparatus comprising:
- a light guide including a proximal end, a distal end, a front surface and a back surface spaced apart from the front surface, an ambient input region on the front surface near the distal end, and an input/output region on the back surface near the distal end;
- a display unit positioned near the proximal end;
- an eye-measurement camera positioned at or near the proximal end to image eye-measurement radiation;
- a proximal optical element positioned in the light guide near the proximal end and a distal optical element positioned in the light guide near the distal end,
- wherein the proximal optical element is optically coupled to the display unit, the eye-measurement camera and the distal optical element such that it directs display light to the distal optical element and directs eye-measurement radiation received from the distal optical element to the eye-measurement camera,
- wherein the distal optical element is optically coupled to the proximal optical element, the ambient input region and the input/output region such that it directs display light to the input/output region and directs eye-measurement radiation from the input/output region to the proximal optical element, and
- wherein the proximal optical element is a polarizing beamsplitter and the distal optical element is a non-polarizing beamsplitter.
A system comprising:
- one or more heads-up displays, each display comprising:
- a light guide including a proximal end, a distal end, a front surface, a back surface spaced apart from the front surface, an ambient input region on the front surface near the distal end, and an input/output region on the back surface near the distal end;
- a display unit positioned near the proximal end;
- an eye-measurement camera positioned at or near the proximal end to image eye-measurement radiation;
- a proximal optical element positioned in the light guide near the proximal end and a distal optical element positioned in the light guide near the distal end,
- wherein the proximal optical element is optically coupled to the display, the eye-measurement camera and the distal optical element such that it directs display light to the distal optical element and directs eye-measurement radiation received from the distal optical element to the eye-measurement camera,
- wherein the distal optical element is optically coupled to the proximal optical element, the ambient input region and the input/output region such that it directs display light to the input/output region and directs eye-measurement radiation from the input/output region to the proximal optical element, and
- wherein the proximal optical element is a polarizing beamsplitter and the distal optical element is a non-polarizing beamsplitter;
- and
- a computer coupled to the eye-measurement camera and the display.
Dependencies are inferred from the claim text.