3D Vehicle Trim Structure for Random Depth-of-Field Lighting
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Solution Overview
Problem
Existing vehicle trim components lack aesthetic appeal due to regular, concentric ring patterns resulting from semi-transreflective and total reflection films, which fail to provide a visually sophisticated and random depth-of-field effect.
Innovation Solution
A vehicle trim component with a transparent frame having three-dimensional surfaces with uneven heights, combined with semi-transreflective and total reflection layers, creates a randomly arranged visual depth-of-field effect through multiple attenuated reflections and transmissions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If semi-transreflective film and total reflection film are used to create depth-of-field effect, then the optical pattern can be formed with layered reflection and transmission, but the resulting pattern is regular (concentric rings) and lacks aesthetic appeal
Solution Approach 1:
The patent transitions from two-dimensional flat film layers to three-dimensional transparent frame structures with varying depths. The frame includes transparent portions at different distances from the observation position, creating irregular optical paths that produce random depth-of-field effects rather than regular concentric rings.
Solution Approach 2:
The patent introduces asymmetry by designing transparent frames with non-uniform depth arrangements. The transparent portions are positioned at irregular intervals and distances, breaking the symmetry that produces regular concentric ring patterns in conventional flat film designs.
2Ease of manufacture
If flat film layers are used for reflection and transmission, then the structure is simple and easy to manufacture, but the visual effect is insufficient and lacks sophistication
Solution Approach 1:
The patent moves from planar 2D film structures to 3D transparent frame structures with depth variations. This dimensional transition maintains manufacturing feasibility through molding processes while achieving sophisticated visual effects through irregular light paths and varying transparency depths.
Solution Approach 2:
The patent changes the depth parameter of transparent portions within the frame structure. By varying the distance of transparent portions from the observation position, the patent creates irregular optical paths that produce sophisticated depth-of-field effects while maintaining structural manufacturability.
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 achieves a visually sophisticated and random depth-of-field effect by utilizing three-dimensional surfaces with uneven heights and irregular optical paths, enhancing the aesthetic appeal of automotive interiors.
Implementation Method 1
the light emitted by the light source is reflected and diffracted in each direction after irradiating the pattern; when the light reaches the semi-transreflective film upwards, a part of the light is seen through the semi-transreflective film, and the other part of the light is reflected again downwards
Implementation Method 2
a part of the light is seen through the semi-transreflective film
Implementation Method 3
when the light reaches the lower total reflection film, the entire light path is totally reflected; when the light reaches the semi-transreflective film upwards, the other part of the light is reflected again downwards to reach the lower total reflection film for total reflection
Implementation Method 4
light of the optical pattern illuminated by the light source undergoes multiple attenuated reflections and transmissions between the total reflection layer and the semi-transreflective layer along an irregular optical path to produce a randomly arranged visual depth-of-field effect
Data Source
Figure 1~4
Figure 5~6B
Figure 7~8B
AI summary
A vehicle trim component, comprising a light source (210), a transparent frame (300), a semi-transreflective layer (310), a total reflection layer (320), and optical patterns (330). At least one of two opposing surfaces of the transparent frame (300) is an uneven three-dimensional surface, and the semi-transreflective layer (310) and the total reflection layer (320) are respectively attached to the two opposing surfaces, so that light - after the optical patterns (330) are illuminated by the light source (210) - undergoes attenuated reflection and transmission multiple times between the total reflection layer (320) and the semi-transreflective layer (310) along an irregular optical path, thereby generating a randomly distributed visual depth-of-field effect.