Beam Splitter Image Display Device with Mirror Lens Array
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Solution Overview
Problem
Conventional three-dimensional image display devices impose an unnatural optical load on users due to mismatched focal points and parallax intersections, leading to discomfort during image perception.
Innovation Solution
The implementation of an image display device featuring a two-dimensional array of light-emitting elements, a mirror lens array with varying focal distances, and a beam splitter to create virtual images that align with the user's focal adjustment and disparity perception, allowing for stereoscopic viewing with reduced optical load.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional three-dimensional image display devices use lenticular lenses to create stereoscopic images, then disparity information is added to enable 3D perception, but the focal point and parallax intersection become mismatched, imposing unnatural optical load on users
Solution Approach 1:
The display is divided into multiple regions (first region and second region) with different optical characteristics. The first region uses a first lens with a first focal length while the second region uses a second lens with a second focal length, allowing each region to be optimized independently for its specific viewing requirements, thereby resolving the contradiction between 3D perception accuracy and optical comfort
Solution Approach 2:
Different portions of the display have different optical properties tailored to their function. The first region has a first focal length optimized for stereoscopic viewing while the second region has a second focal length optimized for background viewing, enabling each local area to provide the appropriate optical characteristics for its intended use case
2Measurement precision
If the display is made opaque to block out background, then image clarity is improved, but the background cannot be seen through the display
Solution Approach 1:
The display is segmented into multiple regions with different optical densities. The first region has higher optical density to block background and improve image clarity, while the second region has lower optical density to allow background visibility, enabling both functions to coexist in different portions of the same display
Solution Approach 2:
Different regions of the display have different transparency characteristics. The first region is designed with properties that block background for clear image display, while the second region is designed with properties that allow background to be seen through, providing local optimization for both clarity and adaptability
3Ease of operation
If multiple images are displayed with different distance perceptions, then viewing comfort is improved, but adjacent images may interfere with each other
Solution Approach 1:
The display is divided into separate regions that display images at different perceived distances. The first region displays images with a first perceived distance while the second region displays images with a second perceived distance, preventing interference between adjacent images by spatially separating them into distinct optical zones
Solution Approach 2:
Different regions have different optical characteristics optimized for their specific image content. The first region has optical properties that create a first perceived distance while the second region has optical properties that create a second perceived distance, allowing multiple images with different distance perceptions to be displayed without mutual interference
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
This configuration enables natural image perception by aligning focal points and parallax intersections, reducing the optical load on users and allowing for clear viewing of images with different distance perceptions without unnecessary adjacent images.
Implementation Method 1
a beam splitter disposed between the display and the mirror lens array, the beam splitter transmitting a part of the light from the regions in a direction of the mirror lens array and reflecting a part of reflected light from the mirror lens array
Implementation Method 2
a mirror lens array including mirror lenses, each of the mirror lenses being disposed correspondingly to one of the regions, reflecting light from the regions, and forming virtual images
Implementation Method 3
each of the mirror lenses being disposed correspondingly to one of the regions, reflecting light from the regions, and forming virtual images
Data Source
AI summary
An image display device according to an aspect of the present disclosure includes: a display including light-emitting elements arrayed two-dimensionally, and having regions, in each of which a part of the light-emitting elements is located; a mirror lens array including mirror lenses, each of the mirror lenses being disposed correspondingly to one of the regions, reflecting light from the regions, and forming virtual images; and a beam splitter disposed between the display and the mirror lens array, the beam splitter transmitting a part of the light from the regions in a direction of the mirror lens array and reflecting a part of reflected light from the mirror lens array.