Near-eye Display Pivot Waveguide Camera Alignment
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Solution Overview
Problem
Conventional near-eye displays obstruct the wearer's view of the environment and fail to align the camera view with the user's perspective when the planar waveguide is rotated.
Innovation Solution
A near-eye display system that includes a planar waveguide and a camera, both mounted to pivot jointly, allowing the camera view to remain aligned with the user's view through the planar waveguide even when it is rotated.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a planar waveguide is used to display virtual images, then the view obstruction is reduced, but the camera view alignment with user perspective is lost when the waveguide is rotated
Solution Approach 1:
The patent merges the planar waveguide and camera into a single integrated module that pivots together as one unit. This ensures that both the virtual image display and camera capture maintain consistent orientation relative to the user's field of view, resolving the alignment issue while preserving the unobstructed view benefit of the planar waveguide design
Solution Approach 2:
The patent implements a pivot mechanism that allows the entire module containing both the planar waveguide and camera to rotate dynamically. This dynamic adjustment enables the system to maintain proper alignment between the waveguide display and camera view by rotating the entire assembly together, rather than attempting to align separate stationary components
2Reliability
If conventional near-eye displays are used, then virtual images can be displayed, but the wearer's view of the environment is obstructed
Solution Approach 1:
The patent extracts the image display function from the user's direct field of view by using a planar waveguide that guides light along the surface of the display device. This allows virtual images to be displayed without blocking the user's natural view of the environment, as the waveguide utilizes the display surface area rather than requiring a large obstructive display screen
3Ease of operation
If the planar waveguide is rotated to adjust viewing angle, then user comfort is improved, but the camera view becomes misaligned with user perspective
Solution Approach 1:
The patent combines the planar waveguide and camera into a single integrated module that pivots together. When the user rotates the viewing angle by pivoting the entire module, both the virtual image display and camera capture rotate simultaneously, maintaining consistent alignment between what the user sees and what the camera captures
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system provides an unobstructed view of the environment while allowing for the display of virtual images and the capture of environmental cues, enhancing user experience and functionality.
Implementation Method 1
An optical image light guide may convey image-bearing light to a viewer in a narrow space for directing the virtual image to the viewer's pupil
Implementation Method 2
a camera operable to capture pictures and videos
Data Source
AI summary
A near-eye display system including an optics module having a projector operable to generate angularly encoded light beams and a camera operable to capture images of an environment, wherein the optics module is operable to convey at least a portion of the light beams to an eyebox. An electronics module having a controller in electrical connection with the optics module, a mounting module located between the electronics module and the optics module, wherein the electronics module is coupled with the optics module via the mounting module, and a first pivot located between the optics module and the electronics module, wherein the optics module is rotatable relative to the electronics module about a first axis. Wherein at least a portion of the optics module is rotatable relative to the electronics module about a second axis oriented transverse to the first axis. Wherein the electronics module includes first and second opposing surfaces, wherein at least a portion of the optics module extends in a first direction, parallel to the second axis, relative to the first surface, and wherein at least a portion of the optics module extends in a second direction opposite the first direction, parallel to the second axis, relative to the second surface.