Faceted Interior Vehicle Lighting for Appealing Light Distribution
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Solution Overview
Problem
Existing lighting devices for motor vehicle interiors lack the ability to generate a unique and appealing light distribution on surfaces in a straightforward manner.
Innovation Solution
A lighting device featuring a faceted body with a translucent interior, comprising a surface of plane facets made from materials like glass or plastic, where light sources emit light through a reflective and translucent surface section, guiding it out via reflection and refraction, allowing for efficient and visually appealing light distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If conventional lighting devices are used for motor vehicle interiors, then basic illumination is provided, but the ability to generate unique and appealing light distribution on surfaces is lacking
Solution Approach 1:
The patent employs a faceted body with multiple plane facets arranged in a curved or spherical configuration. These facets refract and reflect light in multiple directions, creating appealing light distributions on vehicle interior surfaces. The curved geometry of the faceted body transforms simple point-source illumination into complex, visually interesting light patterns without requiring multiple separate light sources or complex optical systems.
Solution Approach 2:
The faceted body is divided into multiple discrete plane facets, each acting as an independent light-guiding element. This segmentation allows light to be distributed across different angular directions through individual facets, creating a sophisticated light distribution pattern. The segmented structure achieves complex illumination effects while maintaining a relatively simple overall device configuration.
2Illumination intensity
If light sources are arranged to emit light directly into the passenger compartment, then simple device structure is maintained, but the ability to generate appealing light distribution patterns is limited
Solution Approach 1:
The faceted body serves as an intermediary optical element between the light source and the vehicle interior surfaces. Light from the source enters the faceted body, undergoes multiple internal reflections and refractions at the plane facets, and then exits to illuminate surfaces. This intermediary structure transforms simple direct illumination into complex, appealing light distribution patterns while keeping the light source configuration relatively simple.
Solution Approach 2:
The patent utilizes changes in optical parameters such as refraction angles, reflection coefficients, and light path lengths within the faceted body. By carefully designing the geometry and arrangement of plane facets, the system controls how light parameters (direction, intensity, distribution) are transformed as light passes through the faceted body, achieving appealing light patterns on vehicle surfaces.
3Illumination intensity
If ambient interior lamps with light guides are used, then color and brightness can be modified, but the light distribution pattern remains conventional and lacks visual appeal
Solution Approach 1:
The faceted body incorporates curved or spherical geometric forms with multiple plane facets arranged in a three-dimensional configuration. This curved geometry creates visually appealing light distribution patterns on vehicle interior surfaces that differ significantly from conventional flat light guide applications. The spherical or curved structure adds aesthetic value while maintaining functional lighting performance.
Solution Approach 2:
The lighting device combines transparent or translucent materials for the faceted body with reflective coatings on the plane facets. This composite structure allows light to be transmitted through the transparent material while simultaneously being reflected and redirected by the coated facets, creating complex and appealing light distribution patterns that enhance visual appeal in the vehicle interior.
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 device generates an appealing light distribution with efficient light usage and flexibility in brightness and color variation, suitable for dynamic or stationary modes, enhancing the interior ambiance and compatibility with various motor vehicle operations.
Implementation Method 1
at least a part of the emitted light being guided out from the faceted body by reflection at the reflection layer of the second surface section
Implementation Method 2
refraction at the facets of the first surface section
Data Source
AI summary
A lighting device includes a facet body, the interior of which is translucent and which includes a surface made of a plurality of flat facets. The facet body is arranged on an opening formed in a cover that outwardly delimits an inner region of the lighting device. The surface of the facet body includes a first surface section and a second surface section, the first surface section is outwardly exposed via the opening and is translucent, and the second surface section lies in the inner region and has a reflective layer with the exception of one or more translucent surface regions. A plurality of light sources are arranged in the inner region such that the light sources emit light into the facet body via the translucent surface region(s) of the second surface section.