Light Guide Reflection Patterns for 3D Visual Recognition
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Solution Overview
Problem
Conventional light guide technologies can only display flat letters due to a uniform light-emitting state, lacking the ability to create three-dimensional recognition of light-emitting areas.
Innovation Solution
A light guide with multiple reflection patterns arranged on its back surface, where the angle and direction of reflection surfaces are varied to change the light emission direction and intensity based on position, allowing for continuous changes in light emission as observed by an observer, creating a three-dimensional effect.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If a reflection pattern is provided in a region of a back surface of a light guide plate, then a letter can be displayed in accordance with an arrangement shape of the reflection pattern, but only a flat letter can be displayed because a light-emitting state of the letter is substantially uniform
Solution Approach 1:
The patent applies local quality by varying the reflection patterns at different positions within the light guide plate. Specifically, the reflection patterns have different orientations and/or reflective properties at different locations, causing light to be reflected at different angles and intensities. This creates local variations in light emission that produce three-dimensional visual effects, directly resolving the contradiction between uniform illumination and three-dimensional recognition.
Solution Approach 2:
The patent transitions from two-dimensional flat letter display to three-dimensional recognition by manipulating light reflection in the angular dimension. By varying the orientation and reflective properties of patterns at different positions, the invention adds a dimensional aspect to light emission, enabling observers to perceive depth and three-dimensional structure in the displayed letters.
2Shape
If reflection patterns are arranged to change light emission direction and intensity, then three-dimensional recognition is achieved, but the arrangement complexity of reflection patterns increases
Solution Approach 1:
The patent segments the light guide plate into multiple regions, each containing reflection patterns with specific orientations and reflective properties. By dividing the overall structure into manageable segments with localized functions, the complex task of creating three-dimensional effects is broken down into simpler, position-specific reflection pattern arrangements, making the system more controllable and manufacturable.
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 observers to recognize light-emitting areas as having both light and dark parts, achieving three-dimensional recognition by varying light intensity and direction across the emitting surface.
Implementation Method 1
a plurality of reflection patterns arranged in at least one reflection area on a facing surface facing the light exit surface... the plurality of reflection patterns being arranged so that an amount of the light arriving at an observer observing the light exit surface from the at least one light emitting area after being reflected on a reflection pattern among the plurality of reflection patterns is continuously changed
Data Source
AI summary
A light guide including a plurality of reflection patterns in a reflection area in a facing surface facing a light exit surface, which area corresponds to a light emitting area, and the reflection patterns are arranged so that an amount of light reflected by the reflection patterns, emitted from the light emitting area to arrive at an observer observing the light exit surface is continuously changed in accordance with a position in the light emitting area.