Vehicle Projection AR System for Wide Field of View
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Solution Overview
Problem
Current augmented reality systems for vehicles face limitations in providing a wide field of view and are often cumbersome due to bulky head-mounted displays, which restrict the operator's ability to view information both inside and outside the vehicle without diverting attention from the road.
Innovation Solution
A system that includes a projection system integrated into the vehicle to project visual outputs onto a head-mounted device's combiner, a position-tracking system to determine the device's location and orientation, and a processor to adjust the projection based on this data, allowing for a wide field of view and comfortable operation without the need for bulky headgear.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If a head-mounted display is used to provide augmented reality content, then a large field of view is achieved, but the device becomes bulky and uncomfortable to wear
Solution Approach 1:
The patent extracts the projection function from the head-mounted device itself and places it in the vehicle. The HMD becomes a passive display surface (combiner) that only needs to reflect light, eliminating the need for bulky projectors, batteries, and computational components in the headgear. This separation allows the HMD to be lightweight and comfortable while still providing a wide field of view through the vehicle's projection system.
2Ease of operation
If a heads-up display is used to project AR content, then the operator can view information without looking down, but the viewing area is limited and field of view is fixed
Solution Approach 1:
The patent implements dynamic projection by tracking the position and orientation of the HMD/combiner in real-time. The projection system adjusts the projection location and angle based on the combiner's movement, allowing the AR content to dynamically follow the operator's line of sight. This enables the fixed physical projection area to provide a dynamically adjusted wide field of view that adapts to the operator's head position and orientation.
3Loss of information
If traditional dashboard displays are used to provide vehicle information, then the information can be displayed, but the operator must look down and away from the windshield
Solution Approach 1:
The patent introduces an optical intermediary system consisting of the projection system and HMD/combiner. Instead of displaying information directly on the dashboard or windshield, the system projects AR content through the combiner, which acts as an intermediary optical element. This allows the operator to view information at eye level while maintaining focus on the road ahead, as the AR content appears to be superimposed on the external environment rather than requiring downward gaze.
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
Enables vehicle operators to receive augmented reality content over a broad field of view, both inside and outside the vehicle, without the discomfort of wearing a bulky head-mounted device, enhancing user experience and safety by maintaining focus on the road.
Implementation Method 1
a projection system included in the vehicle and configured to project a first visual output onto a first projection surface of a head-mounted device of the user
Data Source
AI summary
A system for displaying visual information to a user of a vehicle includes a projection system included in the vehicle and configured to project a first visual output onto a first projection surface of a head-mounted device of the user to cause at least a first portion of the visual information to be displayed to a first eye of the user; a position-tracking system included in the vehicle and configured to determine a location of the head-mounted device with respect to the projection system and an orientation of the head-mounted device with respect to the projection system; and a processor configured to execute instructions to cause the projection system to project the first visual output to the first projection surface based on the position and the orientation.