Multi-Focus 3D Display Timing for Real Depth and Higher Resolution
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Solution Overview
Problem
Current naked-eye 3D display technologies based on binocular parallax lack real depth information, resulting in poor display effects and low image resolution.
Innovation Solution
A display apparatus and method utilizing a multi-focus image generation unit and time sequence control to generate 3D image blocks with different depth information, enhancing the display effect and resolution by implementing real depth distribution through time sequence control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If naked-eye 3D display technology based on binocular parallax is used, then a 3D viewing effect can be generated without auxiliary devices, but real depth information cannot be generated resulting in poor display effect
Solution Approach 1:
The patent transitions from 2D image display to 3D volumetric display by adding the depth dimension. Multiple image blocks are generated at different focal distances along the optical axis, creating a volumetric 3D image space that provides real depth information rather than just binocular parallax effects.
Solution Approach 2:
The patent employs dynamic focal length adjustment through a liquid crystal lens whose focal length can be changed by applying different voltages. This allows the display system to dynamically generate image blocks at various focal distances, creating a dynamic 3D viewing experience with real depth perception.
2Ease of operation
If the display panel separates left eye and right eye by dividing area, then binocular parallax can be achieved, but final display image resolution is low
Solution Approach 1:
Instead of separating images spatially across the display panel area, the patent separates left and right eye images along the depth dimension (focal distance). Multiple image blocks at different focal lengths are generated, allowing each eye to focus on images at its respective focal distance without compromising overall image resolution.
Solution Approach 2:
The system pre-calculates and generates multiple image blocks at different focal distances before display. By preparing these focused image blocks in advance for different depths, the system ensures that when the liquid crystal lens adjusts to a specific focal length, the corresponding high-resolution image block is already ready for immediate display.
3Manufacturing precision
If multiple image blocks at different focal distances are generated, then real depth information is provided, but system complexity increases
Solution Approach 1:
The patent introduces a liquid crystal lens as an intermediary component between the display panel and the viewer's eyes. This single variable focal length lens acts as a mediator that dynamically focuses light from different image blocks at different depths, simplifying the overall system compared to using multiple fixed-focus lenses or complex multi-layer display structures.
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 provides a 3D image with improved display effect and resolution by generating 3D image blocks with real depth information, surpassing the limitations of 2D binocular parallax-based technologies.
Implementation Method 1
a camera having an electronically tunable liquid crystal lens in which the focal plane of the lens may be adjusted by controlling the voltage on the lens
Implementation Method 2
The diffuser comprises a liquid crystal operable in a light scattering mode in which the liquid crystal is arranged to have a spatially-variant refractive index
Implementation Method 3
a spatial light modulator to modulate the emitted light beam
Implementation Method 4
generate a virtual 3D image based on the optical signal, and send the virtual 3D image
Data Source
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AI summary
A display apparatus (100), system, and method are provided, to display a 3D image based on real depth information, so as to improve a display effect of the 3D image and a resolution of the 3D image. The display apparatus (100) includes a multi-focus image generation unit (101) and a time sequence control unit (102). The multi-focus image generation unit (101) is connected to the time sequence control unit (102). The time sequence control unit (102) is configured to: generate a plurality of time sequence instructions that belong to a first switching period, and send the plurality of time sequence instructions that belong to the first switching period. The multi-focus image generation unit (101) is configured to: receive the plurality of time sequence instructions that belong to the first switching period from the time sequence control unit (102), and generate a plurality of corresponding three-dimensional (3D) image blocks at different distances based on the plurality of time sequence instructions. The plurality of 3D image blocks respectively have different depth information, and the plurality of 3D image blocks belong to a 3D image for display in the first switching period.