Virtual Image Display Color Alignment for Chromatic Aberration
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Solution Overview
Problem
Chromatic aberration occurs in virtual image display devices due to the optical elements, causing color shift in the viewed image.
Innovation Solution
The display device includes a display panel with sub-pixels of different colors and a lighting device with light-emitting elements emitting light of corresponding colors, and a drive circuit that generates and adjusts color-resolved images based on image signals to suppress chromatic aberration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If an optical element (lens) is used to collect light to the user's eyes, then light collection efficiency is improved, but chromatic aberration occurs causing color shift in the viewed image
Solution Approach 1:
The image is segmented into multiple color-resolved images corresponding to different wavelengths of light. Each color-resolved image is displayed separately on the display panel, allowing the optical element to focus each color at its correct focal point, thereby eliminating chromatic aberration while maintaining light collection efficiency.
Solution Approach 2:
The patent changes the parameter of image display by displaying multiple color-resolved images with different wavelength characteristics simultaneously on the display panel. This parameter change allows the optical system to handle different wavelengths separately, resolving the chromatic aberration problem while preserving the light gathering capability of the lens.
2Manufacturing precision
If multiple color-resolved images are displayed to suppress chromatic aberration, then image quality is improved, but device complexity increases
Solution Approach 1:
The drive circuit is designed to perform multiple functions: it separates the image signal into multiple color-resolved images, adjusts their relative positions, and controls the display panel to display them simultaneously. This multi-functionality approach manages the complexity by consolidating multiple operations into a single integrated circuit rather than requiring separate components for each function.
Solution Approach 2:
The drive circuit acts as an intermediary between the image signal input and the display panel output. It processes the image signal to generate color-resolved images and coordinates their display, thereby managing the complexity of handling multiple wavelength components without requiring complex optical or mechanical systems.
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 effectively reduces chromatic aberration by aligning the sizes of color-resolved images, providing a clearer and more accurate virtual image display.
Implementation Method 1
an optical element configured to collect light transmitted through the display panel to user's eyes
Implementation Method 2
a lighting device configured to illuminate the display panel, the lighting device comprises a plurality of light-emitting elements emitting light having colors different from each other
Data Source
AI summary
A display device includes a display panel, a lighting device configured to illuminate the display panel, an optical element configured to collect light transmitted through the display panel to user's eyes, and a drive circuit configured to drive the display panel based on an image signal having information on an image. The lighting device comprises a plurality of light-emitting elements emitting light having colors different from each other, and the drive circuit generates a plurality of color resolved images obtained by resolving the image for each color of the light, based on the image signal, adjusts sizes of the color resolved images based on the colors of the light, and displays the color resolved images on the display panel.