3D Display Viewpoint Control for Light Misalignment and Crosstalk
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Solution Overview
Problem
Conventional naked-eye three-dimensional displays suffer from light misalignment issues due to imperfect pixel point sources, leading to image crosstalk and blurring, resulting in double images.
Innovation Solution
A three-dimensional display device equipped with an eye tracking device, processor, and display that calculates and adjusts light intensity based on eye positions to reduce image crosstalk by using light emitting and splitting units to generate and distribute beams of light through specific viewpoints.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a splitting device is used to ensure restricted output angles for multiple pixels, then three-dimensional display capability is improved, but image crosstalk and blurring occur due to light misalignment
Solution Approach 1:
The system performs preliminary eye position tracking and calculates the appropriate light path and divergence angles before displaying the three-dimensional image. By determining the correct light distribution parameters in advance based on eye position, the system prevents light misalignment and image crosstalk before they occur, resolving the contradiction between three-dimensional display capability and light alignment precision
Solution Approach 2:
The system dynamically adjusts the light path and divergence angles based on real-time eye position feedback. The processor continuously updates the light distribution parameters according to the tracked eye positions, making the light alignment adaptive and dynamic rather than static, thereby maintaining high precision across different viewing conditions while preserving three-dimensional display capability
2Illumination intensity
If light intensity is increased to improve image brightness, then visibility is improved, but image crosstalk between left and right eyes increases
Solution Approach 1:
The system applies different light intensity levels to different spatial locations and viewpoints. By calculating the specific light path and divergence angles for each eye position, the system directs appropriate light intensity to the correct eye (left or right) while preventing light from reaching the wrong eye. This localized control of light intensity eliminates image crosstalk while maintaining overall image brightness
Solution Approach 2:
The processor acts as an intermediary that mediates between the light emitting units and the viewer's eyes. It calculates and determines the appropriate light distribution parameters including intensity, path, and divergence angles, effectively controlling how light reaches each eye. This intermediary control prevents direct light leakage between eyes while maintaining proper brightness levels for each viewpoint
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 device effectively reduces image crosstalk by adjusting light intensity at specific viewpoints, improving the clarity of three-dimensional images.
Implementation Method 1
The plurality of light emitting units are configured to emit plurality of beams of light
Implementation Method 2
The plurality of light splitting units are configured to distribute the plurality of beams of light emitted by the plurality of light emitting units
Data Source
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AI summary
Provided are a three-dimensional display device (100) and a display method. An eye tracking device (120) of the three-dimensional display device (100) tracks a left eye position and a right eye position. A processor (110) generates a plurality of views. A plurality of light splitting units (220_1 to 220_3) of a display (130) of the three-dimensional display device (100) distribute a plurality of beams of light emitted by a plurality of light emitting units (210_1 to 210_N). The processor (110) calculates divergence angles and light paths of the beams of light passing through the light splitting units (220_1 to 220_3) to generate viewpoints through which the beams of light pass. The processor (110) performs a light intensity comparison and post-processing on views corresponding to the at least one of the left eye viewpoints (P_1 to P_M) and the at least one of the right eye viewpoints (P_(M+1) to P_K).