Mirror Display Depth Alignment via 100mm Spacing
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Solution Overview
Problem
Conventional mirror displays cause uncomfortable feelings due to the mismatch in depth perception between the mirror image and the displayed image, as the mirror image is perceived behind the half mirror plate, leading to different focal points and convergence angles for viewing.
Innovation Solution
Increasing the distance between the display surface of the display device and the half mirror plate to bring the mirror image and the image to the same depth, using a guiding member or length measurement sensor to accurately position the viewer, allowing simultaneous perception without discomfort.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the display device is placed close to the half mirror plate, then the device structure is compact, but the mirror image and displayed image are perceived at different depths causing uncomfortable feeling
Solution Approach 1:
The patent changes the key parameter of distance between the display device and half mirror plate from a small value (conventional design) to a large value (100mm or more). This parameter change resolves the contradiction by allowing the mirror image and displayed image to be perceived at the same depth, improving viewing comfort while maintaining acceptable device compactness through optimized spatial arrangement.
2Ease of operation
If the distance between display device and half mirror plate is increased to 100mm or more, then the mirror image and image are perceived at the same depth, but the device structure becomes larger
Solution Approach 1:
The patent introduces adjustable positioning mechanisms that allow dynamic adjustment of the distance between the display device and half mirror plate. This enables the system to adapt to different viewing conditions and user requirements, maintaining optimal viewing comfort (100mm or more distance) while allowing compact configuration when needed, thus resolving the contradiction between viewing comfort and device size.
3Ease of operation
If guiding members or length measurement sensors are added to position the viewer accurately, then simultaneous perception of mirror image and image is enabled, but the device complexity increases
Solution Approach 1:
The patent employs simple, low-cost positioning elements such as floor stickers or basic length measurement sensors instead of complex active positioning systems. These inexpensive guiding members provide sufficient functionality for enabling simultaneous perception of mirror image and displayed image without significantly increasing device complexity, effectively resolving the contradiction between perception capability and system 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
Enables comfortable simultaneous perception of the mirror image and the image, improving practicality, especially in applications like virtual fitting of glasses or clothes, without requiring the viewer to stand close to the mirror display.
Implementation Method 1
a half mirror plate including a half mirror layer... the mirror display provides images owing to display light emitted from the display device and is also usable as a mirror by reflecting external light
Data Source
AI summary
The present invention provides a mirror display that enables simultaneous perception of a mirror image and an image with suppressed uncomfortable feeling. The mirror display of the present invention includes a half mirror plate including a half mirror layer, and a display device. The display device is disposed on the back surface side of the half mirror plate. The distance between a display surface of the display device and a display surface of the half mirror plate is not smaller than 100 mm. The half mirror layer preferably includes a reflective polarizer.