Multi-View Display Light-Slit Layout for Clear Viewpoint Separation
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Solution Overview
Problem
Existing display apparatuses struggle to provide different images at different viewpoints effectively, leading to issues with image quality and noise, and lack the ability to narrow the radiation angle and width of light emission.
Innovation Solution
The display apparatus incorporates a structure with first and second light sources arranged in a specific direction, each equipped with a slit cover and a multi-view lens, which refracts light to specific viewpoints, and includes an entrance surface cover with lens slits to control light passage, enhancing image quality and reducing noise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a multi-view display apparatus uses conventional light sources without slit covers, then the light emission is sufficient for visibility, but the radiation angle is too wide causing image quality degradation and noise at different viewpoints
Solution Approach 1:
The patent extracts and removes excessive light radiation by introducing slit covers that block light in unwanted directions. The slit cover selectively transmits light only in specific angular ranges, extracting the harmful wide-angle radiation while preserving the useful light for the intended viewpoint, thereby reducing noise and improving image quality.
Solution Approach 2:
The slit cover introduces local quality control by creating direction-dependent light transmission properties. Different regions of the light emission are treated differently: light within the desired angular range is transmitted, while light outside this range is blocked. This local differentiation in light transmission quality enables precise control over light directionality, improving image quality at specific viewpoints while suppressing noise from other directions.
2Adaptability or versatility
If the light source emits light in a wide angle to ensure visibility, then the viewing area is covered, but the width of light entering the multi-view lens increases causing viewpoint confusion and reduced image differentiation
Solution Approach 1:
The slit cover segments the light emission into distinct angular channels. Each slit corresponds to a specific viewpoint, creating separated light paths that prevent overlap between different viewpoints. This segmentation maintains viewing area coverage while ensuring that light from different light sources enters the multi-view lens through distinct, non-overlapping angular ranges, thereby improving viewpoint separation and reducing confusion.
3Adaptability or versatility
If no light control structure is used, then the device complexity is low, but the number of distinguishable viewpoints in the viewing area is limited
Solution Approach 1:
The slit cover changes the angular parameter of light emission by physically constraining the light path. By adjusting the slit geometry and position, the patent controls which angular ranges are transmitted, thereby increasing the number of distinguishable viewpoints. This parameter control is achieved through a relatively simple structural addition that modifies the light emission characteristics without requiring complex active control systems.
4Manufacturing precision
If the slit cover blocks light to narrow the radiation angle, then viewpoint specificity is improved, but the overall light intensity decreases
Solution Approach 1:
The patent employs multiple light sources arranged in a row, each with its own slit cover, creating a dynamic light distribution system. While each individual slit cover narrows the radiation angle and reduces light intensity for that specific light source, the collective arrangement of multiple light sources compensates for this loss by providing additional light paths. The system dynamically distributes light across multiple sources to maintain overall illumination intensity while achieving high viewpoint specificity through the slit covers.
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 allows for improved image quality by providing distinct images at different viewpoints while narrowing the light radiation angle and width, thereby reducing noise and enhancing the viewing experience.
Implementation Method 1
at least one multi-view lens configured to refract the light emitted from the first light source to proceed toward the first viewpoint and to refract the light emitted from the second light source to proceed toward the second viewpoint
Data Source
AI summary
A display apparatus includes: a first light source configured to emit light visible from a first viewpoint; a second light source arranged in a row with the first light source in a first direction and configured to emit light visible from a second viewpoint; and a multi-view lens configured to refract the light emitted from the first light source toward the first viewpoint and to refract the light emitted from the second light source toward the second viewpoint, wherein each of the first light source and the second light source includes: a light emitter; and a slit cover covering a portion of the light emitter between the light emitter and the at least one multi-view lens, wherein the slit cover includes a light source slit having a first width and is configured to allow the light emitted from the light emitter to pass through the light source slit.