Floating Image Display Device Guide Image Recognition
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Solution Overview
Problem
Existing floating image display technologies make it difficult for viewers to recognize floating images as they are often confused with actual objects in the viewer's line of vision, such as dihedral corner reflectors or retroreflective sheets, rather than being perceived as images in the air.
Innovation Solution
A floating image display device comprising an image display unit, a floating-image-formation optical system, and guide image display units that adjust image signals to match the blurring, luminance, and contrast of the floating image, allowing guide images to be displayed on the same plane as the floating image, facilitating correct visual recognition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a floating image is formed using a dihedral corner reflector array or retroreflective sheet, then the floating image can be displayed in the air, but the position where the floating image is displayed becomes hard to recognize for the viewer
Solution Approach 1:
A guide image display unit is introduced as an intermediary element to help viewers locate the floating image. The guide image is displayed on the same plane as the floating image and provides visual cues that facilitate eye focusing and position recognition, without interfering with the floating image formation itself
Solution Approach 2:
The guide image is designed with different luminance and contrast characteristics compared to the floating image. By adjusting the luminance to be lower than the floating image and applying different contrast levels, the guide image becomes visually distinguishable yet harmoniously integrated, allowing viewers to easily locate the floating image position
2Difficulty of detecting and measuring
If the guide image is displayed with high luminance and contrast, then the guide image is clearly visible, but it creates visual discomfort and distracts from the floating image
Solution Approach 1:
The luminance and contrast parameters of the guide image are carefully adjusted to resolve the contradiction. The luminance is set lower than that of the floating image to ensure the guide image is visible but does not dominate the viewer's attention. The contrast is also modified to create visual harmony, allowing the guide image to fulfill its positioning function without causing visual discomfort or distraction
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 easily focus on and correctly recognize floating images as being at their intended display position by providing guide images that match the blurring, luminance, and contrast of the floating image, enhancing visual recognition and reducing confusion with actual objects.
Implementation Method 1
a floating image display device that employs a half mirror and a retroreflective sheet, and thereby forms a floating image based on the display image in a space at a position plane-symmetrical with respect to the half mirror
Implementation Method 2
a technology that employs a dihedral corner reflector array formed by arranging a great number of dihedral corner reflectors on a plane, and thereby forms a floating image based on the display image
Data Source
AI summary
A floating image display device includes an image display unit that displays a display image based on a first image signal, a floating-image-formation optical system that forms an image in air as a floating image from the display image, a guide image display unit that displays a guide image based on a second image signal nearby the floating image to be visually recognized on the same plane as the floating image as viewed from a viewer, and an image control unit that supplies the first image signal and the second image signal respectively to the image display unit and the guide image display unit. The image control unit supplies an image signal as the second image signal to the guide image display unit after the image signal undergoes at least one of a process of adding blurring, a process of lowering luminance and a process of lowering contrast.