Contactless Key Light-Blocking Structure for Clear Suspended Images
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Solution Overview
Problem
Contactless keys suffer from incomplete disappearance of suspended images due to light interference between adjacent keys, leading to poor image quality with insufficient brightness and contrast.
Innovation Solution
A contactless key design featuring a substrate with integrated light-blocking elements that prevent light rays from one accommodating space from entering adjacent spaces, using light-blocking walls with reflective surfaces to enhance light projection efficiency and brightness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If contactless keys are placed adjacent to each other to save space, then space utilization is improved, but light interference between adjacent keys causes suspended images to fail to disappear completely
Solution Approach 1:
The patent introduces light-blocking walls that divide the key structure into separate accommodating spaces, effectively segmenting the light paths of adjacent keys. This segmentation prevents light from one key from interfering with adjacent keys, resolving the contradiction between space utilization and light interference.
Solution Approach 2:
The light-blocking walls act as intermediary elements between adjacent light-emitting elements. These walls block and redirect light rays, preventing direct interference between adjacent keys while maintaining the compact adjacent arrangement, thus resolving the contradiction.
2Object-affected harmful factors
If light-blocking walls are added to prevent light interference, then light interference is reduced, but device complexity increases
Solution Approach 1:
The light-blocking walls are integrated with the substrate to form a unified structure. The walls extend from the substrate and incorporate accommodating spaces, merging the light-blocking function with the structural support function, thereby reducing overall device complexity while maintaining light interference prevention.
Solution Approach 2:
The light-blocking walls serve multiple functions: they block light interference, provide structural support, and create accommodating spaces for light-emitting elements. This multi-functionality reduces the need for separate components, thereby reducing device complexity while effectively preventing light interference.
3Illumination intensity
If light-blocking walls with reflective surfaces are used, then brightness is improved, but manufacturing complexity increases
Solution Approach 1:
The patent modifies the surface parameters of the light-blocking walls by adding reflective surfaces with specific reflectivity characteristics. This parameter change enhances light redirection and brightness without fundamentally altering the manufacturing process, making it easier to achieve high brightness while controlling manufacturing complexity.
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 design ensures complete disappearance of suspended images and improves image quality by blocking light interference and increasing brightness, resulting in enhanced image clarity and contrast.
Implementation Method 1
the light-blocking element has a plurality of accommodating spaces, a first surface, and a second surface... The accommodating spaces penetrate through the first surface and the second surface and are respectively communicated with the light outlets. The light-emitting elements are respectively located in the accommodating spaces.
Implementation Method 2
The two light-reflective surfaces are opposite to each other and located between the top-end and the bottom-end, and the two light-reflective surfaces are located in the accommodating space.
Data Source
AI summary
A contactless key is provided, including a substrate, a plurality of light-emitting elements, a light-blocking element, and an imaging film. The light-emitting elements are fixed to the substrate. The light-blocking element is fixed to the substrate. The light-blocking element has a plurality of accommodating spaces, a first surface, and a second surface. The first surface is opposite the second surface, and the first surface has a plurality of light outlets. The accommodating spaces penetrate through the first surface and the second surface and communicate with each other via the light outlets. The light-emitting elements are respectively located in the accommodating spaces. The imaging film is opposite the first surface.