See-Through Display Transmittance Control for Virtual Object Visibility
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The insufficient sense of reality in virtual objects displayed on top of actual images due to their semi-transparent nature in head-mounted display devices is addressed.
Innovation Solution
A display device with a first and second display unit, where the second unit's transmittance is adjusted based on the brightness of the real space to enhance the visibility of virtual objects by reducing or increasing light transmission, thereby improving the perception of virtual objects relative to the actual environment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the image of a virtual object is displayed as semitransparent on top of a clear display image, then the user can view both the virtual object and the actual image, but the sense of reality of the virtual object becomes insufficient
Solution Approach 1:
The patent applies dynamics by making the transmittance of the second display unit adjustable rather than fixed. The control unit dynamically changes the transmittance based on the brightness relationship between the virtual object and the actual image, allowing the display system to adapt to different viewing conditions and maintain the sense of reality while ensuring visibility
Solution Approach 2:
The patent changes the transmittance parameter of the second display unit based on brightness conditions. When the actual image brightness is higher than the virtual object brightness, the transmittance is reduced to enhance the virtual object's prominence, thereby maintaining its sense of reality while ensuring it remains visible
2Loss of information
If the transmittance of the second display unit is reduced to enhance virtual object visibility, then the virtual object becomes more prominent, but the actual image brightness may be diminished
Solution Approach 1:
The patent implements feedback by having the control unit continuously monitor the brightness relationship between the virtual object and the actual image, and adjust the transmittance accordingly. This closed-loop control ensures that the virtual object remains visible while preventing excessive dimming of the actual image, as the system responds to brightness conditions in real-time
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
Enhances the visibility and sharpness of virtual objects by adjusting the transmittance of the second display unit, allowing users to clearly distinguish and perceive both virtual and real-world images effectively.
Implementation Method 1
a control unit configured to adjust a transmittance of an area of the second display unit. The control unit is configured to reduce the transmittance of the area of the second display unit when a brightness of the image of the physical object on which the image of the virtual object is superimposed is determined to be higher than a brightness of the image of the virtual object
Data Source
AI summary
A display device includes: a video generation unit configured to generate an image of a virtual object; a first display unit configured to display the image of the virtual object; a second display unit arranged on an outer side of the first display unit; and a control unit configured to adjust a transmittance of an area of the second display unit. The control unit is configured to reduce the transmittance of the area of the second display unit when a brightness of a image of a physical object in a real space on which the image of the virtual object is superimposed is higher than a brightness of the image of the virtual object, and increase the transmittance of the area of the second display unit when the brightness of the image of the physical object is not higher than the brightness of the image of the virtual object.