Multi-aperture Projection Displays for Motor Vehicle Distance Visualization
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Solution Overview
Problem
Conventional driver assistance systems for visualizing the distance between a motor vehicle and surrounding objects are costly due to the requirement of multiple sensors, cable harnesses, and complex software logic for visualization.
Innovation Solution
The use of multi-aperture projection displays that project symbols onto surrounding surfaces to indicate the distance without the need for special logic, utilizing an array of projection lenses and field lenses to create a passive distance display through illumination, allowing for the visualization of distance changes using symbols in different projection planes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If conventional driver assistance systems with multiple sensors and software logic are used to visualize distance, then distance information can be provided to the driver, but the system becomes costly and complex
Solution Approach 1:
The patent replaces complex electronic sensor systems and software logic with an optical projection system. The illumination device with projection lenses projects distance-coded patterns directly onto the road surface, allowing the driver to perceive distance information visually without electronic processing. This substitutes a mechanical/optical system for an electronic/software-based system, reducing complexity and cost while maintaining the information delivery function.
Solution Approach 2:
The system creates visual copies of distance information by projecting patterns onto the road surface that represent distance measurements. Instead of using electronic displays or acoustic signals, the patent projects optical images that directly encode distance data, allowing the driver to read distance information from the projected patterns on the ground, thus providing information through a visual copy rather than electronic processing.
2Loss of information
If conventional driver assistance systems with multiple sensors and cable harnesses are used to visualize distance, then distance information can be provided to the driver, but the system becomes costly
Solution Approach 1:
The patent replaces expensive electronic sensor arrays, cable harnesses, and processing units with a simpler optical projection system. The illumination device with projection lenses creates distance visualizations using basic optical components that are cheaper to manufacture and install than conventional sensor-based systems, thereby reducing manufacturing costs while maintaining the distance information delivery capability.
3Loss of information
If projection planes are positioned at different distances from the motor vehicle, then multiple distance zones can be visualized, but the illumination device must cover a larger area
Solution Approach 1:
The patent uses the vertical dimension of projection angles to differentiate distance zones. By projecting patterns at different angles onto the road surface, the system creates multiple projection planes at different effective distances without requiring the illumination device to physically cover a larger horizontal area. This dimensional approach allows multiple distance zones to be visualized within a compact illumination footprint.
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
This solution provides a cost-effective and intuitive method for visualizing the distance to objects, reducing the risk of accidents by conveying distance information to the driver through symbols in various projection planes, without the need for complex logic or additional hardware beyond the illumination device.
Implementation Method 1
an array of projection lenses, each projection lens being assigned to an object structure which is projected by the respective projection lens into at least one projection plane
Implementation Method 2
A respective multi-aperture projection display contains a luminous means for illuminating a multiplicity of object structures
Implementation Method 3
an array of field lenses which is arranged between the luminous means and the object structures
Data Source
AI summary
An illumination device of a motor vehicle includes one or more multi-aperture projection displays, where a respective multi-aperture projection display contain a luminous means for illuminating a plurality of object structures and an array of projection lenses. Each projection lens is assigned to an object structure which is projected by the respective projection lens into at least one projection plane extending perpendicularly or obliquely with respect to the ground in an area surrounding the motor vehicle. The one or more multi-aperture projection displays are configured such that an overall image containing symbols perceivable by a driver of the motor vehicle is produced in the at least one projection plane by the projected object structures.