Aerial Image Mirror Layout to Suppress Ghosting
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Solution Overview
Problem
Existing aerial display apparatuses face challenges in maintaining display quality due to the occurrence of ghost images caused by light distribution exceeding certain angles, which affects the symmetry and clarity of the aerial images.
Innovation Solution
The apparatus is designed with a mirror device that reflects light emitted from a display unit at angles between −35.0 degrees and +35.0 degrees relative to the normal direction, ensuring that the light distribution falls within this range to prevent ghost images and maintain symmetry.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the light distribution angle is increased to expand the display area, then the aerial image coverage is improved, but ghost images appear and display quality deteriorates
Solution Approach 1:
The patent applies parameter changes by precisely controlling the light distribution angle range to be between -35.0 degrees and +35.0 degrees. This specific angular parameter restriction prevents ghost image formation while maintaining adequate display area, resolving the contradiction between expanding display coverage and avoiding harmful optical artifacts.
2Shape
If the mirror device is positioned to achieve plane-symmetrical aerial image formation, then image symmetry is improved, but light distribution control becomes more difficult
Solution Approach 1:
The patent employs asymmetry in the light distribution control by implementing different angular constraints (-35.0 to +35.0 degrees) relative to the normal direction, while achieving symmetric aerial image formation. This asymmetric control approach simplifies the overall system by using asymmetric angular parameters to produce symmetric optical outcomes.
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 suppresses the formation of ghost images, thereby ensuring high display quality and symmetry of the aerial images, enhancing the overall display experience.
Implementation Method 1
a mirror device disposed obliquely with respect to the display surface of the display unit, and configured to reflect the display light emitted by the display unit to allow an aerial image to be formed at a position that is plane-symmetrical to the display unit
Data Source
AI summary
An aerial display apparatus that ensures a display quality of an aerial image is provided. An aerial display apparatus according to an embodiment includes: a display unit (20) including a display surface on which an image is displayed and configured to emit display light from the display surface; and a mirror device disposed obliquely with respect to the display surface of the display unit (20), and configured to reflect the display light emitted by the display unit (20) to allow an aerial image to be formed at a position that is plane-symmetrical to the display unit (20), a light distribution of the display light being greater than −35.0 degrees and less than +35.0, given that a normal direction of the display surface is 0 degrees.