Optical Plate for Uniform Visual Feedback in Voice Speakers
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Incorporating light-emitting components into electronic devices can result in unintended light patterns and bulkiness, making it challenging to achieve the desired appearance and functionality.
Innovation Solution
A voice-controlled electronic device with a housing featuring a light control plate composed of a transparent upper layer and a reflective lower layer, where the upper layer has recessed portions aligned with light-emitting components to direct light upwards and laterally, ensuring uniform visual feedback across the top cap with improved contrast and minimal specular reflections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If light-emitting components are incorporated into the electronic device, then visual feedback functionality is provided, but the device becomes overly bulky
Solution Approach 1:
The patent combines the light control plate with the top cap structure, merging two separate components into an integrated assembly. The light control plate is positioned within the housing and works in conjunction with the top cap to direct and diffuse light, eliminating the need for separate light directing components and reducing overall device volume.
Solution Approach 2:
The patent uses optical routing through the top cap structure to direct light laterally across the surface. By utilizing the top cap as both a structural element and an optical element, the design eliminates the need for additional depth to accommodate separate light guiding components, thus reducing device bulkiness.
2Adaptability or versatility
If conventional light-emitting components are used, then visual feedback is provided, but the light patterns do not appear as intended and contrast is insufficient
Solution Approach 1:
The light control plate serves as an intermediary element between the light-emitting components and the top cap. It includes a reflective lower layer and a diffuser layer that mediate the light path, directing light upward through recessed portions and laterally across the top cap surface. This intermediary structure ensures uniform light distribution and enhances contrast by controlling which areas receive direct light versus reflected light.
Solution Approach 2:
The light control plate features localized recessed portions aligned with specific light-emitting components, creating different optical paths for different regions. The reflective lower layer provides localized reflection in specific areas, while the diffuser layer creates localized diffusion effects. This local differentiation of optical properties enables precise control over light patterns and contrast across different zones of the top cap.
3Illumination intensity
If the top cap is made transparent or translucent to allow light passage, then visual feedback is visible, but specular reflections degrade the appearance
Solution Approach 1:
The patent applies a reflective lower layer with specific optical properties to the light control plate. This layer can be configured with different reflectivity characteristics to enhance desired light patterns while suppressing unwanted specular reflections. The reflective layer acts as an optical filter that modifies the light spectrum and direction, reducing harmful reflections while maintaining light visibility.
Solution Approach 2:
The diffuser layer in the light control plate serves as an intermediary that scatters light before it reaches the top cap surface. This diffusion process converts direct specular reflections into diffuse reflections, maintaining light visibility while eliminating harsh reflective glare. The diffuser layer mediates between the light source and the transparent top cap, controlling the quality of light interaction with the cap surface.
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 uniform and aesthetically pleasing visual feedback with enhanced contrast and reduced bulkiness by effectively directing and scattering light, improving the appearance and functionality of electronic devices.
Implementation Method 1
The dish-shaped portions may be configured to reflectively scatter light that is total internally reflected off the top surface of the transparent upper layer back towards the top portion of the housing.
Implementation Method 2
The recessed portions may be configured to direct light upwards to the top cap portion and to also spread light in the lateral direction so that the emitted light is uniformly projected across the surface of the top cap with sufficient contrast.
Implementation Method 3
If desired, the surface of the dish-shaped regions may optionally be provided with microstructures or nanostructures configured to scatter light while minimizing specular reflections.
Data Source
AI summary
An electronic device such as a voice-controlled speaker device may have a housing. A speaker and other input-output components and control circuitry may be mounted within the housing. Light-emitting components may emit light that passes through a curved upper top cap portion or other housing structure. Some of the light-emitting components may be rotated to improve color balance. Optical structures such as a dual-shot injection molded light control plate may be disposed over the light-emitting components to promote light mixing, reduce hotspots, and improve contrast on the top cap. The light control plate may have an upper clear layer with bell-shaped cavity portions configured to help spread light in the lateral direction and may have a reflective lower layer with dish-shaped portions configured to reflect and diffuse light back towards the top cap. The surface of the dish-shaped portions may be provided with microtextured structures to help scatter light.