3D Display Unit Using Total Reflection Mirror for Depth Perception
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Solution Overview
Problem
Conventional display units for creating three-dimensional effects require multiple components, leading to increased size and component loss, and struggle to maintain depth perception when the viewer's point of view changes.
Innovation Solution
A display unit using a combination of total reflection mirrors and half-mirrors, with polarized beam splitting elements, to superpose images from different depth positions on a single plane, ensuring efficient image transmission and reducing component count.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple two-dimensional display elements are arranged at different depthwise distances to create three-dimensional effects, then depth perception is improved, but the number of components increases and the device size becomes large
Solution Approach 1:
The patent merges multiple display elements onto a single two-dimensional display element by using optical superposition techniques. Multiple images at different depth positions are projected onto one screen and optically combined, eliminating the need for multiple separate display elements while maintaining the three-dimensional depth perception effect.
Solution Approach 2:
The patent creates the illusion of multiple depth positions on a single two-dimensional plane by using optical path manipulation. Through the use of half-mirrors and total reflection mirrors, images are superposed at different apparent depths while physically remaining on one flat surface, effectively adding a depth dimension to the two-dimensional display.
2Adaptability or versatility
If half-mirrors are used to superpose images from different depth positions, then depth perception is achieved, but image brightness is reduced due to beam loss
Solution Approach 1:
The patent introduces a total reflection mirror as an intermediary optical element to redirect light paths. This mediator allows images from different depth positions to be superposed without the light loss associated with half-mirrors, as the total reflection mirror reflects nearly all incident light rather than splitting it.
Solution Approach 2:
The patent changes the optical parameters of the reflection elements from partial reflection (half-mirrors with typical 50% reflection) to total reflection (total reflection mirrors with near 100% reflection). This parameter change dramatically improves image brightness while maintaining the depth superposition capability.
3Adaptability or versatility
If multiple display elements are used to create different depth positions, then three-dimensional effects are enhanced, but the device thickness increases
Solution Approach 1:
The patent creates multiple depth positions on a single two-dimensional plane by using optical path manipulation. Through the use of half-mirrors and total reflection mirrors, images are superposed at different apparent depths while physically remaining on one flat surface, effectively adding a depth dimension to the two-dimensional display without increasing physical thickness.
4Measurement precision
If conventional display units are used to maintain depth perception when viewer position changes, then depth accuracy is preserved, but the device becomes large-sized
Solution Approach 1:
The patent merges multiple display elements onto a single two-dimensional display element by using optical superposition techniques. Multiple images at different depth positions are projected onto one screen and optically combined, eliminating the need for multiple separate display elements while maintaining the three-dimensional depth perception effect.
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 allows for a thin, compact display unit that maintains depth perception even when the viewer's point of view changes, with improved image brightness and reduced component count.
Implementation Method 1
a half-mirror 2 and a total reflection mirror 3
Implementation Method 2
total reflection mirror 3
Implementation Method 3
at least one of the half-mirrors 2 is a polarized beam splitting element
Data Source
AI summary
A display unit which displays a plurality of objects viewed as being located at different depthwise positions by the viewer so as to exhibit an image with depthwise feeling, includes: a single display portion including a far-distant display zone and a near-distant display zone, a polarized beam splitting element in front of the near-distant display zone, a polarized beam changing element in front of the far-distant display zone, and a total reflection mirror for reflecting an image beam emitted from the far-distant display zone, onto the polarized beam splitting element. An image beam emitted from the far-distant display zone is transmitted through the polarized beam changing element, then is reflected at the total reflection mirror, and thereafter is reflected by the polarized beam splitting element before it is viewed by the viewer.