Vehicle Light Guide Plate Depth Perception Simplification
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Solution Overview
Problem
Existing vehicle light emitting devices require complex configurations involving light guide plates and reflectors to create the illusion of depth, which complicates their design and functionality.
Innovation Solution
A simplified configuration using a light source and a light guide plate, with a lighting controller to control the emission states based on vehicle operations, allowing the light guide plate to form images both inside and outside the vehicle, providing information to observers and enhancing visibility by creating a sense of depth.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a light guide plate and a reflector are used to create depth illusion, then the illumination provides a feeling of depth, but the configuration becomes complicated
Solution Approach 1:
The invention extracts and eliminates the reflector component from the traditional light guide system. By using a light guide plate with specific optical properties (diffuse transmission), the patent achieves depth perception without requiring the additional reflector element, thus simplifying the overall configuration while maintaining the depth effect.
Solution Approach 2:
The light guide plate in this invention serves multiple functions simultaneously: it guides light from the light source, creates the depth perception effect, and eliminates the need for a separate reflector. This multi-functionality reduces the number of components required in the system.
2Loss of information
If multiple light guide plates are stacked to present multiple images, then more information can be provided to observers, but the device complexity increases
Solution Approach 1:
The patent utilizes the third dimension (depth) by stacking multiple light guide plates at different positions along the light propagation direction. Each plate presents information at a different apparent depth, allowing multiple images to be displayed simultaneously without requiring lateral expansion or complex mechanical structures.
Solution Approach 2:
The information display function is segmented across multiple light guide plates, with each plate responsible for presenting specific information or images at different depth levels. This segmentation allows independent control and optimization of each layer while maintaining overall system functionality.
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 enables a straightforward and effective vehicle light emitting device that forms images responsive to vehicle operations, providing information and enhancing visibility with a sense of depth using a light source and light guide plate, without the need for complex reflector systems.
Implementation Method 1
a light guide plate 11A configured to direct light incident thereon from the light source 2A so that the light exits from a light emitting surface 11a of the light guide plate 11A
Implementation Method 2
a plurality of groups of optical-path changing portions 13 formed on the rear surface 11b of the light guide plate 11A, each group of optical-path changing portions 13 changing an optical path of light entering the light guide plate 11A so that light exits from the light emitting surface 11a in a specific direction
Data Source
AI summary
A vehicle light emitting device provided to a vehicle and configured to emit light toward outside the vehicle includes a light source; a light guide plate including a light emitting surface and configured to direct light entering from the light source so that the light exits from the light emitting surface and forms an image in a space; and a lighting controller configured to control the emissions state of the light source in accordance with an operation of the vehicle.