Curved Dual-Screen Display for Wide-Angle Depth Perception
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Solution Overview
Problem
Existing image display technologies have limitations in displaying images with a sense of depth at a wider viewing angle, restricting the range in which depth can be effectively displayed.
Innovation Solution
An image display apparatus comprising a curved first screen and a curved second screen with transparency, where a projection unit emits light to project images onto both screens, allowing for superimposed display of images on the curved surfaces to enhance the sense of depth at a wider viewing angle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a single planar display surface is used, then the display structure is simple, but the viewing angle range is limited
Solution Approach 1:
The patent transitions from a single planar display surface to multiple planar display surfaces arranged at different depths (front surface and rear surface of the display device). This dimensional arrangement allows images to be displayed across a wider spatial range, enabling observers to view the image from various angles while maintaining depth perception, thus resolving the contradiction between display surface area and viewing angle range.
2Adaptability or versatility
If multiple display surfaces are used to widen viewing angle, then the viewing angle range increases, but the device complexity increases
Solution Approach 1:
The patent employs a single projector to project images onto multiple display surfaces (front and rear surfaces), making the projection system multi-functional. By controlling the projector to sequentially or simultaneously project images onto different surfaces, the system achieves wide viewing angle without requiring separate projection devices for each surface, thus reducing overall device complexity while maintaining versatility.
3Reliability
If images are projected onto multiple surfaces, then the sense of depth is enhanced, but the brightness of individual images decreases
Solution Approach 1:
The patent employs periodic projection where the projector alternately projects images onto the front display surface and the rear display surface. By controlling the projection timing and using display control unit to coordinate the switching between surfaces, the system ensures that each surface receives sufficient light intensity for bright image display while maintaining the depth effect through the temporal separation and spatial arrangement of the projected images.
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 enables the display of images with a sense of depth over a broader viewing angle, improving visibility and providing a more immersive experience by controlling display parameters and using diffractive optical elements.
Implementation Method 1
the first screen may diffuse and reflect light for displaying the first image
Implementation Method 2
the first screen may diffuse and reflect light for displaying the first image
Implementation Method 3
the second screen may diffuse and transmit light for displaying the second image
Implementation Method 4
the second screen having transparency
Data Source
AI summary
An image display apparatus (100) according to the present invention includes a display unit and a projection unit. The display unit includes a curved first screen (43) and a curved second screen (44), the first screen extending along a predetermined axis (1), the curved screen having transparency and being disposed on a front side of the first screen (43) with a gap interposed therebetween. The projection unit includes an emitter (11) that emits light for displaying a first image from a region on the predetermined axis (1) and a second image superimposed on the first image, projects the first image onto the first screen (43), and projects the second image onto the second screen (44).