Baffle Assembly Restricts Light Divergence in Stereo Display

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Solution Overview

Problem

Conventional stereo image display devices fail to provide a natural viewing angle and suffer from poor image quality due to a large divergence angle of the light source, limiting the ability to display vivid, three-dimensional images that appear to float above the display surface.

Innovation Solution

An integrated image display device incorporating a display unit, a lens array or pinhole array layer, and a baffle assembly that restricts the divergence angle of light, allowing viewers to view stereo images from oblique angles and improving image quality by shielding unnecessary light levels.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If conventional stereo image display technology is used, then the device structure is simple, but the viewing angle is limited and image quality deteriorates due to large light divergence

Engineering Contradiction:
Improveviewing angleVSAvoidimage quality
Core Design Contradiction:
Ease of operationVSManufacturing precision

Solution Approach 1:

The patent divides the light control function into multiple components: lens array segments that redirect light at different angles, and baffle segments that selectively block light paths. This segmentation allows different regions to control light divergence independently, enabling both wide viewing angles and high image quality without compromising either parameter.

Inventive Principle:
Principle #1Segmentation

2Device complexity

If the light source divergence angle is large, then the device structure is simpler, but light of other levels interferes and image quality becomes poor

Engineering Contradiction:
Improvedevice structureVSAvoidimage quality
Core Design Contradiction:
Device complexityVSManufacturing precision

Solution Approach 1:

The patent introduces baffles as intermediary elements between the light source and display surface. These baffles act as mediators that selectively block unwanted light paths while allowing desired light to pass through. This intermediary structure controls light divergence without requiring complex optical systems, thus maintaining simple device structure while improving image quality.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Ease of manufacture

If conventional display technology is used, then the manufacturing process is simple, but the stereo image display effect is insufficient

Engineering Contradiction:
Improvemanufacturing processVSAvoidstereo image display effect
Core Design Contradiction:
Ease of manufactureVSManufacturing precision

Solution Approach 1:

The patent transitions from conventional 2D display to 3D stereo display by adding depth through controlled light divergence. The lens array and baffle structure create multiple light paths that converge at different angles, adding a dimensional aspect to the display. This dimensional enhancement improves the stereo image display effect while maintaining compatibility with existing manufacturing processes.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

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

Enables viewers to perceive stereo images from both oblique and direct angles, enhancing image quality and reducing light divergence, resulting in a better stereo image display effect while maintaining a thin device thickness and simple manufacturing process.

Implementation Method 1

The lens array layer is disposed adjacent to the display surface of the display unit, and the lens array layer includes a plurality of lenses. An un-reconstructed image displayed by the display surface is able to be reconstructed by the lens array layer

Methodology Applied
Scientific EffectRefraction: Refraction

Implementation Method 2

The pinhole array layer is disposed adjacent to the display surface of the display unit, and the pinhole array layer includes a main body and a plurality of pinholes. An unstructured image displayed by the display surface is able to be reorganized by the pinhole array layer

Methodology Applied
Scientific EffectRefraction: Refraction

Implementation Method 3

The baffle assembly includes a plurality of first baffles, and the first baffles are spaced apart from each other. The first baffles are configured to shield light so that a divergence angle of the light emitted by the display unit is able to be restricted

Methodology Applied
Scientific EffectLight shielding: Absorption (EM radiation)

Data Source

PatentUS11287669B2Integrated image display device
Publication Date: 2022.03.29 LIXEL INC
  • US11287669B2 patent drawing
  • US11287669B2 patent drawing
  • US11287669B2 patent drawing

AI summary

An integrated image display device includes a display unit, a lens array layer, and a baffle assembly. The baffle assembly includes a first baffle layer and a second baffle layer. The first baffle layer includes a plurality of first baffles, and a first transmission portion is formed between each two adjacent ones of the first baffles. The second baffle layer includes a plurality of second baffles, and a second transmission portion is formed between each two adjacent ones of the second baffles. Portions of the first transmission portions overlapped with the second transmission portions form a plurality of light transmission units. An un-reconstructed image displayed by the display surface can be reconstructed by the lens array layer, and be recombined into an integrated image to form a stereo image.