Switchable Light Controller for Privacy Beam Direction
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Solution Overview
Problem
Existing electronic devices lack the ability to effectively control or change the direction of light emission to enhance privacy and prevent specific individuals from viewing, such as in scenarios like a car dashboard, where light projection can interfere with the driver.
Innovation Solution
A light emitting device with a light controller that includes switchable diffusers and light shielding elements, allowing the light to be collimated or diffused based on the state of the controller, controlled by electrodes receiving control signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple light sources and lenses are used to achieve variable beam patterns, then beam pattern versatility is improved, but device complexity increases
Solution Approach 1:
The patent combines multiple light sources (first and second light sources) into a single integrated light emitting device, allowing them to work together through a shared controller to produce different beam patterns. This merging approach achieves beam pattern versatility without requiring separate complete lighting systems for each pattern type.
Solution Approach 2:
The controller is designed with multi-functionality to manage different light sources and produce various beam patterns (spot, flood, and intermediate patterns) through software control. The same hardware platform can generate multiple beam patterns by adjusting the illumination states of different light sources, eliminating the need for separate dedicated systems for each beam type.
2Adaptability or versatility
If multiple light sources are integrated in a housing, then beam pattern versatility is improved, but manufacturing complexity increases
Solution Approach 1:
The light emitting device is divided into modular components including a housing, a light source assembly with multiple light sources, and a controller. This segmentation allows for standardized manufacturing of individual modules that can be assembled together, reducing overall manufacturing complexity while maintaining the capability for multiple beam patterns.
Solution Approach 2:
The patent achieves different beam patterns by changing the operational parameters (illumination states) of the light sources rather than requiring different physical configurations. The controller can independently control each light source to create spot, flood, or intermediate beam patterns, allowing flexible beam pattern generation without complex mechanical adjustments or multiple complete assemblies.
3Device complexity
If a single light source is used, then device complexity is reduced, but adaptability to different lighting scenarios deteriorates
Solution Approach 1:
The lighting system incorporates dynamic control capabilities where the controller can adjust the illumination states of multiple light sources in real-time based on different lighting scenarios. This dynamic adjustment allows a single integrated device to adapt to various lighting requirements (spotlighting, floodlighting, intermediate patterns) without requiring multiple separate static lighting systems.
Solution Approach 2:
The system achieves adaptability to different lighting scenarios by changing the operational parameters of the light sources through software control. The controller can modify intensity, duration, and combination states of different light sources to create appropriate lighting conditions for various scenarios, maintaining device simplicity while achieving high versatility.
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 can efficiently adjust light direction to enhance privacy by either collimating or diffusing light, improving visibility and reducing distractions.
Implementation Method 1
The light controller (130) collimates the lights in the first state (SU1)
Implementation Method 2
The light controller (130) diffuses the lights in the second state (SU2)
Data Source
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AI summary
A light emitting device (100) includes a plurality of light emitting elements (120) and a light controller (130). The light emitting elements (120) are for emitting lights. The light controller (130) is disposed on the light emitting elements (120) for the lights passing through, which is switchable in a first state (SU1) and a second state (SU2). The light controller (130) collimates the lights in the first state (SU1) and diffuses the lights in the second state (SU2).