Road Surface Projection Layout for Multi-Image Display
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Solution Overview
Problem
Existing road surface drawing apparatuses are limited to displaying a single type of colored image, requiring multiple apparatuses for multiple types of images or animations, leading to increased size and cost, especially when using digital micromirror devices (DMDs) which are expensive and complex to control.
Innovation Solution
A compact and inexpensive road surface drawing apparatus utilizing a plurality of light sources, a mask with light-transmitting windows, and a common projection lens to draw multiple types of images without DMDs, allowing for efficient switching between images and animation display by coordinating light sources and light-transmitting windows.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple drawing apparatuses are used to display multiple types of colored images or animations, then the versatility is improved, but the device size increases
Solution Approach 1:
The patent implements multi-functionality by enabling a single drawing apparatus to display multiple types of images and animations through software control. The system can switch between different image types (colored images, black and white images, animations) by controlling the timing and color of LED light sources, eliminating the need for multiple separate apparatuses and reducing overall device size.
Solution Approach 2:
The patent applies dynamics by making the image display capabilities flexible and changeable through software control. The system can dynamically switch between different image types and animation sequences by adjusting the control signals to the LED light sources and liquid crystal shutter, allowing one apparatus to adapt to various display requirements without physical reconfiguration.
2Manufacturing precision
If digital micromirror devices (DMD) are used for drawing, then the image quality is improved, but the cost and control complexity increase
Solution Approach 1:
The patent replaces expensive DMD devices with inexpensive LED light sources and liquid crystal shutters. The LED-based system uses simple, low-cost components that can be easily controlled through software timing, achieving comparable image quality without the high cost and complexity of DMD technology.
Solution Approach 2:
The patent substitutes the mechanical DMD mirror flipping system with an optical control system using LED light sources and liquid crystal shutters. This replacement eliminates complex mechanical moving parts and uses electronic control of light emission and transmission, simplifying the overall system while maintaining image quality.
3Adaptability or versatility
If multiple drawing apparatuses are prepared for different image types, then the adaptability is improved, but the manufacturing cost increases
Solution Approach 1:
The patent implements multi-functionality by enabling a single drawing apparatus to display multiple types of images and animations through software control. The system can switch between different image types (colored images, black and white images, animations) by controlling the timing and color of LED light sources, eliminating the need for multiple separate apparatuses and reducing overall device size.
4Volume of moving object
If a single apparatus displays multiple image types through software control, then the device size is reduced, but the control system complexity increases
Solution Approach 1:
The patent substitutes the mechanical DMD mirror flipping system with an optical control system using LED light sources and liquid crystal shutters. This replacement eliminates complex mechanical moving parts and uses electronic control of light emission and transmission, simplifying the overall system while maintaining image quality.
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 the creation of a compact, cost-effective road surface drawing apparatus capable of displaying multiple types of images and animations by using a common projection lens and minimizing the need for expensive DMDs, reducing size and operational complexity while maintaining image quality.
Implementation Method 1
a plurality of light sources 12 that is capable of individually emitting a light; a mask 18 having a plurality of light-transmitting windows 20, each light-transmitting window 20 arranged to receive the light from a corresponding light source
Implementation Method 2
a common projection lens 16 arranged to project the light transmitted through each light-transmitting window 20 from the corresponding light source onto a road surface
Data Source
AI summary
A road surface drawing apparatus includes: a plurality of light sources that is capable of individually emitting a light; a mask having a plurality of light-transmitting windows, each light-transmitting window arranged to receive the light from a corresponding light source of the plurality of light sources; a partition that partitions a space between the plurality of light sources and the mask into a plurality of subspaces, each subspace allocated for each light-transmitting window and the corresponding light source; and a common projection lens arranged to project the light transmitted through each light-transmitting window from the corresponding light source onto a road surface.