Vehicular Lighting Device Using Half Mirror for 3D Image Depth
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Solution Overview
Problem
Conventional vehicular lighting devices face challenges in implementing three-dimensional effects due to complex designs and high costs, limited design flexibility, and inefficient light distribution, which complicates the manufacturing and design process.
Innovation Solution
A lighting device utilizing a half mirror member and a mirror member, combined with a guide portion and a diffusion plate, to create a three-dimensional light image with a sense of depth while improving space utilization and light uniformity, allowing for various design configurations and reduced thickness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a three-dimensional structure with multiple LED light sources is arranged to implement three-dimensional lighting, then three-dimensional lighting effect is achieved, but device complexity and manufacturing cost increase
Solution Approach 1:
The patent combines multiple LED light sources into a single planar light source that emits light in multiple directions simultaneously. This single light source replaces what would traditionally require multiple separate LEDs arranged in three-dimensional space, thereby achieving the three-dimensional lighting effect while significantly reducing structural complexity
Solution Approach 2:
The patent transitions from a three-dimensional arrangement of multiple light sources to a two-dimensional planar light source that creates three-dimensional lighting effects through strategic positioning and light direction control. This dimensionality reduction simplifies the overall structure while maintaining the desired lighting effect
2Illumination intensity
If LED light sources with narrow radiation angle are used to cover large light emitting area, then light intensity is sufficient, but number of LED light sources increases and cost increases
Solution Approach 1:
The single planar light source is designed to emit light in multiple directional segments simultaneously (upward, downward, leftward, rightward). This segmentation of light emission directions allows one light source to cover the entire light emitting area that would otherwise require multiple narrow-angle LEDs
Solution Approach 2:
The planar light source performs multiple functions simultaneously: it provides illumination in all directions, creates three-dimensional lighting effects, and eliminates the need for multiple separate light sources. This multi-functionality reduces both the quantity of components and overall system cost
3Illumination intensity
If three-dimensional structure is used to implement three-dimensional lighting, then lighting effect is achieved, but design flexibility and adaptability to size restrictions are reduced
Solution Approach 1:
The patent achieves three-dimensional lighting effects using a two-dimensional planar light source, which can be easily adapted to various device sizes and shapes. This approach provides greater design flexibility compared to rigid three-dimensional light source arrangements, allowing the lighting device to better integrate into different vehicle designs and size constraints
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 the creation of a clear three-dimensional light image with depth and varied effects, improving light uniformity and design flexibility, while reducing the overall thickness and cost of the lighting device.
Implementation Method 1
a half mirror member disposed in the opening, a first light source portion configured to emit light toward the half mirror member
Implementation Method 2
a mirror member configured to reflect light reflected by the half mirror member
Implementation Method 3
a diffusion plate disposed between the first light source portion and the half mirror member
Data Source
Figure 1
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AI summary
A lighting device according to one embodiment comprises: a housing having an opening; a half mirror member arranged in the opening; a first light source unit for emitting light at the half mirror member; a mirror member for re-reflecting light reflected by the half mirror member; a diffusion plate arranged between the first light source unit and the half mirror member; and a guide unit protruding from the lower surface of the housing, wherein the housing includes a first area and a second area formed by the guide unit, the first light source unit is arranged in the first area and the mirror member is arranged in the second area, and the diffusion plate can be supported by the guide unit. Therefore, the lighting device can implement various three-dimensional effects of an optical image according to a field of view by using the half mirror member and the mirror member during lighting.