Vehicle Optical Direction Display With Segmented Arrow Projection
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Solution Overview
Problem
Existing optical devices for displaying complex patterns on road surfaces, such as arrows, face challenges in simplicity of structure, light utilization efficiency, and cost-effectiveness, often requiring complex mechanisms and multiple optical systems, which can lead to distorted markings at distance and poor resolution.
Innovation Solution
A directional display device using a reflector or lens with a deflection surface divided into regions, each forming partial irradiation images that combine to create a complex pattern like an arrow, utilizing a single light source and eliminating the need for multiple optical systems or light source arrays, ensuring excellent light utilization efficiency and cost-effectiveness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single light source with a divided deflection surface is used, then device complexity is reduced and light utilization efficiency is improved, but manufacturing precision requirements increase
Solution Approach 1:
The deflection surface is divided into multiple regions, each responsible for forming a specific portion of the final pattern. This segmentation allows a single light source to create complex patterns through spatial division of the optical surface, reducing the need for multiple light sources or complex optical systems while maintaining manufacturing feasibility through modular surface design.
Solution Approach 2:
Different regions of the deflection surface are designed with locally optimized properties to direct light into specific spatial regions. Each region's surface characteristics are tailored to achieve the desired light distribution pattern, allowing precise control over the formed pattern while using a simple single-light-source configuration.
2Shape
If multiple optical systems or light source arrays are used to display complex patterns, then pattern complexity is improved, but light utilization efficiency deteriorates
Solution Approach 1:
Multiple optical functions are merged into a single optical system with a divided deflection surface. Instead of using separate optical systems or light source arrays, the invention combines pattern formation and light direction control into one integrated component, thereby creating complex patterns while maintaining high light utilization efficiency.
Solution Approach 2:
The single light source with divided deflection surface serves multiple functions simultaneously: it generates light, directs light into specific spatial regions, and forms complex patterns. This multi-functional design eliminates the need for additional optical components or light sources, improving both pattern complexity capability and light utilization efficiency.
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
The solution allows for the simple and cost-effective display of complex patterns on road surfaces with improved light utilization efficiency, ensuring that vehicle intentions are clearly communicated to both nearby and distant observers without distortion.
Implementation Method 1
an optical element which condenses light emitted from the light source into a shape of the condensing mark on a road surface
Implementation Method 2
an optical element which condenses light emitted from the light source into a shape of the condensing mark on a road surface
Data Source
AI summary
An optical device for displaying a condensing mark includes a light source, and an optical element for condensing light emitted from the light source onto an irradiated surface. A lamp controller acquires a detection signal from a state detection device mounted on the vehicle and configured to detect a behavior of and peripheral environmental information of the vehicle, and light or blink the optical device. The optical device displays a plurality of condensing marks by arranging each of them side by side in at least the travelling direction of the vehicle on a lane orthogonal to a lane on which the vehicle exists, and one of the plurality of condensing marks to be displayed on a display region farthest from the vehicle is different in color from another one of the plurality of condensing marks to be displayed on a display region closest to the vehicle.