Motor Vehicle Light Modules Using Deflectors and Scattering Surfaces
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Solution Overview
Problem
Existing dual-function light-emitting devices for vehicles face issues with inconsistent illuminated appearances due to separate light sources being activated for different functions, leading to inefficiencies and potential glare, especially in high-beam modes.
Innovation Solution
Incorporating a third light source with a deflecting member and scattering surfaces in one light-emitting module to maintain a uniform appearance across functions, ensuring no loss of efficiency by directing light away from direct glare-causing paths.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If separate light sources are used for different lighting functions (high-beam, low-beam), then each function can be optimized independently, but the illuminated appearance becomes inconsistent across different operating modes
Solution Approach 1:
The patent applies multi-functionality by enabling a single light source to perform multiple lighting functions (high-beam, low-beam, daytime running light) through selective activation and optical control. The projecting optical device and light source serve universal purposes across different operating modes, eliminating the need for separate dedicated light sources for each function.
2Illumination intensity
If the entire projecting optical device is illuminated for high-beam function, then complete light coverage is achieved, but the illuminated appearance differs from low-beam mode where only part is illuminated
Solution Approach 1:
The patent applies optical appearance control by manipulating the visual appearance of the projecting optical device through controlled illumination. The system adjusts which portions of the optical device appear illuminated based on the active lighting function, creating consistent visual appearance across different modes through strategic light distribution and optical design.
3Stability of the object's composition
If a third light source is added to maintain uniform appearance, then illuminated appearance consistency is improved, but device complexity increases
Solution Approach 1:
The patent introduces an intermediary optical control mechanism that mediates between the light source and the projecting optical device. This intermediary system (including deflecting members and scattering surfaces) controls how light interacts with the optical device to create consistent appearance, avoiding the need for multiple independent light sources while maintaining visual uniformity.
4Stability of the object's composition
If light is deflected to another light-emitting module to maintain appearance, then illuminated appearance consistency is improved, but light efficiency is reduced due to light loss
Solution Approach 1:
The patent extracts the appearance-maintenance function from the primary light path by using a separate optical control mechanism. Instead of deflecting functional light between modules (which causes energy loss), the system extracts visual appearance control through dedicated optical elements (deflecting members, scattering surfaces) that manage illumination appearance without compromising light efficiency for the actual lighting functions.
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
Ensures a constant and uniform illuminated appearance across different lighting functions without efficiency loss, preventing glare and maintaining optimal light distribution.
Implementation Method 1
the deflecting member being arranged to receive light emitted by the third light source and to deflect that light toward said scattering surface
Implementation Method 2
at least one scattering surface, the deflecting member being arranged to receive light emitted by the third light source and to deflect that light toward said scattering surface
Data Source
AI summary
The invention relates to a light-emitting device including a first light-emitting module and a second light-emitting module, the first light-emitting module including a first light source and a first optical device arranged to form a first light beam, the second light-emitting module including a second light source and a second optical device arranged to form a second light beam, the second light-emitting module including a third light source and a third optical device including a deflector and a scattering surface, the deflector being arranged to deflect light emitted by the third light source toward the scattering surface, the light-emitting device including a control unit arranged to turn on the third light source when the first light source is turned on.