Interactive Vehicle HUD with Spatial Gesture Sensing
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Solution Overview
Problem
Existing Head-Up-Display (HUD) apparatuses for vehicles lack an interactive function that allows drivers to operate the projected screen while viewing it, and they require downsizing to fit between the steering wheel and windshield.
Innovation Solution
An information display apparatus with a spatial sensing system that detects driver input and allows interactive operation by projecting images onto the windshield, using a virtual-image optical system, practical-image optical system, or direct-view type display, and incorporates a spatial sensing apparatus with linearly arranged light emitting and optical elements to enable interactive functions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If HUD apparatus is downsized to fit between steering wheel and windshield, then installation space requirement is satisfied, but interactive function capability is lost
Solution Approach 1:
The system is divided into separate functional modules: a compact projection unit for displaying images on the windshield, and a spatial sensing apparatus with light emitting elements and optical elements for detecting driver gestures. This segmentation allows the HUD apparatus to be downsized while interactive functionality is provided by the separate spatial sensing system, resolving the contradiction between size reduction and functional capability.
2Adaptability or versatility
If interactive function is added to HUD apparatus, then driver interaction capability is improved, but device complexity increases
Solution Approach 1:
The spatial sensing apparatus acts as an intermediary between the driver and the HUD system. It uses light emitting elements to illuminate the space between the driver and windshield, optical elements to detect reflected light from driver gestures, and a control unit to process this information and adjust display content accordingly. This intermediary approach enables interactive functionality without requiring complex integration into the core HUD projection system.
3Measurement precision
If spatial sensing apparatus with multiple light emitting and optical elements is used, then interactive detection precision is improved, but manufacturing complexity increases
Solution Approach 1:
The optical elements in the spatial sensing apparatus serve multiple functions: they collect reflected light from driver gestures, guide the light to photodetectors, and help determine the three-dimensional position of gestures. By designing optical elements that perform multiple functions simultaneously rather than having separate components for each function, the system achieves high detection precision while reducing the total number of components and simplifying manufacturing.
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 interactive control of vehicle functions and navigation information with reduced driver point-of-view motion, enhancing safety and convenience by allowing drivers to interact with projected images while driving.
Implementation Method 1
a light emitting element creating a collimated light flux from a light flux emitted from a light source
Implementation Method 2
an optical element made of a light-collecting lens element that receives a reflected light flux on obstacles among the light flux from this light emitting element
Implementation Method 3
a virtual-image optical system that displays a virtual image onto the forward part of the vehicle by causing the windshield glass of the vehicle to reflect light emitted from this apparatus
Data Source
AI summary
An information display apparatus and a spatial sensing apparatus for the information display apparatus are provided, the information display apparatus enabling the selection/change of the lot of display images in small point-of-view motion so that an interactive function for a driver is achieved. An information display apparatus displaying information onto a vehicle includes: an information display apparatus displaying image information onto an image display region on a forward part of a driver seat of the vehicle; and a spatial sensing means detecting positional information of instruction made by a driver in a spatial region between the driver seat and the displayed image display region, and the information display apparatus includes a means displaying the instruction made by the driver onto the image display region on the forward part in response to the positional information of the instruction made by the driver, detected by the spatial sensing means.