Dual-Screen VR Display Optics for Depth-of-Field Realism
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Solution Overview
Problem
Traditional virtual reality display devices fail to achieve a realistic depth-of-field effect, resulting in blurred close-range and long-range images when the human eye observes different distances, leading to a poor immersive experience.
Innovation Solution
A display device with a processor, a display screen component comprising a close-range and long-range display screen, and a half-transmitting and half-reflecting mirror, where the close-range screen is positioned closer to the mirror than the long-range screen, allowing the mirror to reflect and transmit light from both screens to create a depth-of-field effect by blurring images at different distances.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a single display screen is used in traditional virtual reality devices, then the device structure is simple, but the depth-of-field effect is lost and realistic effect is poor
Solution Approach 1:
The display screen is segmented into multiple independent display screens (first display screen for close-range images, second display screen for long-range images). Each screen can be independently controlled to display images at different clarity levels, enabling the depth-of-field effect and improving realistic effect while maintaining manageable structural complexity
Solution Approach 2:
The patent introduces a new dimension of depth perception by displaying images at different virtual distances. By rendering close-range images on one screen and long-range images on another screen, the system creates a multi-layered depth structure that mimics human eye focus, transforming a 2D display into a 3D depth-experience system
2Manufacturing precision
If multiple display screens are used to achieve depth effect, then the realistic effect is improved, but the device complexity increases
Solution Approach 1:
A beam splitter is introduced as an intermediary optical element to combine the light paths from multiple display screens. The beam splitter enables multiple screens to share a common optical path, allowing images from different screens to be superimposed and viewed through a single eyepiece, thereby reducing overall device complexity while maintaining the depth-of-field effect
Solution Approach 2:
Multiple display screens and their optical paths are merged into a unified viewing system. The beam splitter combines the optical paths of the first and second display screens, allowing both screens to be viewed through the same eyepiece, thus consolidating the optical structure and reducing the number of separate optical components needed
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 realistic effect of the displayed image by blurring close-range and long-range images appropriately, mimicking human eye focus, thereby improving the immersive experience.
Implementation Method 1
The half-transmitting and half-reflecting mirror is used for reflecting and transmitting light emitted from the close-range display screen and light emitted from the long-range display screen
Implementation Method 2
The half-transmitting and half-reflecting mirror is used for reflecting and transmitting light emitted from the close-range display screen and light emitted from the long-range display screen
Implementation Method 3
Due to the limited depth of field of human eye, when the observer observes the close-range image closer to the observer, the long-range image is blurry to the observer
Data Source
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Figure 5(b)~6(a)
AI summary
The embodiment of the present application provides a display device and method, which relates to the technical field of virtual reality and intends to solve the problem of poor realistic effect of an image displayed by an existing display device. The device includes: a processor, a display screen component, and a half-transmitting and half-reflecting mirror. The display screen component includes a close-range display screen and a long-range display screen. A distance from the close-range display screen to the half-transmitting and half-reflecting mirror is shorter than a distance from the long-range display screen to the half-transmitting and half-reflecting mirror. The processor is used for sending a close-range image among an image to the close-range display screen for display and sending a long-range image among the image to the long-range display screen for display. The half-transmitting and half-reflecting mirror is used for reflecting and transmitting light emitted from the close-range display screen and light emitted from the long-range display screen. By implementing the embodiment of the scheme, the realistic effect of an image may be enhanced.