Galvanic Mirror Eye Tracking for Head-Up Display Precision
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing vehicle systems lack an effective method to accurately locate a driver's eye for optimizing head-up display information presentation, which is crucial for ensuring the driver's attention is focused on the road.
Innovation Solution
A system comprising a head-up display with a galvanic mirror, laser, and receiver that transmits and receives infrared rays to map the driver's face, using a computer system to store and process reflections for determining the eye's location, allowing for precise eye tracking and adjustment of the display.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a head-up display system is implemented in a vehicle, then the driver can access information, but the system cannot accurately locate the driver's eye to optimize information presentation
Solution Approach 1:
The patent combines the laser, receiver, and galvanic mirror into an integrated locator system that works together as a unified unit. The laser and receiver are positioned in close proximity on opposite sides of the housing, with the galvanic mirror serving as a shared component for both transmission and reception of infrared rays, thereby achieving accurate eye location detection through component merging.
Solution Approach 2:
The galvanic mirror serves multiple functions within the system: it directs the infrared rays from the laser toward the driver's face, reflects the returned rays to the receiver, and can be rotated to scan different angular positions. This multi-functionality allows a single component to perform what would otherwise require multiple separate elements, reducing overall system complexity while maintaining detection precision.
2Measurement precision
If the locator system uses a galvanic mirror positioned outside the housing, then eye tracking accuracy is improved, but the system complexity increases
Solution Approach 1:
The system is divided into distinct functional modules: the head-up display housing containing the light source and internal mirrors, and the locator system with the galvanic mirror, laser, and receiver positioned outside the housing. This segmentation allows each module to be optimized independently while maintaining precise eye tracking through the external galvanic mirror configuration.
3Manufacturing precision
If the laser and receiver are formed integral with the galvanic mirror, then manufacturing precision is improved, but ease of manufacture decreases
Solution Approach 1:
The laser, receiver, and galvanic mirror are formed as an integral unit, eliminating the need for separate mounting and alignment of these components. This merging ensures precise alignment between the laser, galvanic mirror, and receiver while simplifying the manufacturing process by reducing the number of assembly steps and potential misalignment issues.
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 accurate eye location identification and tracking, enhancing the effectiveness of head-up display information presentation by ensuring the driver's attention is maintained on the road, improving safety and usability.
Implementation Method 1
the laser is configured to transmit an infrared ray toward a face of an occupant of a vehicle; and the receiver is configured to receive a reflection of the infrared ray
Implementation Method 2
the receiver is configured to receive a reflection of the infrared ray after the infrared ray has reflected off the face of the occupant
Implementation Method 3
a galvanic mirror disposed outside, and in proximity to, the housing
Data Source
AI summary
In various embodiments, methods, systems, and vehicles are provided that include a head-up display and a locator system. In an exemplary embodiment, the head-up display system includes a housing; a light source disposed within the housing; and one or more mirrors disposed within the housing. Also in certain embodiments, the locator system includes: a galvanic mirror disposed outside, and in proximity to, the housing; a laser formed on the galvanic mirror; and a receiver formed on the galvanic mirror.