Optical Assembly for Compact VR Imaging
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Solution Overview
Problem
It is challenging to display high-resolution VR images on small-sized display screens used in wearable VR devices due to size constraints.
Innovation Solution
An optical assembly comprising a light-transmitting device, a light-converging device, and a light-reflecting device is used to converge and reflect light from left-eye and right-eye display images, reducing the image size while maintaining high resolution, utilizing optical components like optical prisms, lenses, and mirrors to achieve this.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a large-sized display screen is used to display high-resolution VR images, then image definition is improved, but device size and weight increase making it unsuitable for wearable applications
Solution Approach 1:
The optical system is segmented into multiple functional components: light-transmitting device (optical prism), light-converging device (lenses), and light-reflecting device (mirrors). This segmentation allows each component to perform a specific function in the optical path, enabling compact arrangement while maintaining high-resolution image quality.
Solution Approach 2:
The optical components are arranged in a nested configuration where the light-converging lenses are positioned within the optical path defined by the light-transmitting prism, and the light-reflecting mirrors are integrated into the same compact space. This nesting allows multiple optical elements to occupy overlapping or adjacent spatial volumes, achieving high resolution in a small form factor.
2Measurement precision
If optical components are added to converge and reflect light for high-resolution display on small screens, then image definition is improved, but device complexity increases
Solution Approach 1:
The optical assembly performs multiple functions simultaneously: the light-transmitting device directs light from display screens, the light-converging lenses focus light to reduce image size while maintaining resolution, and the light-reflecting mirrors redirect light to the user's eyes. This multi-functionality is achieved through a unified optical assembly design where each component serves its primary purpose without requiring additional separate systems.
Solution Approach 2:
The patent combines the light transmission, convergence, and reflection functions into a single integrated optical assembly rather than using separate systems. The optical prism, lenses, and mirrors are arranged in a compact configuration where they work together as one cohesive unit, reducing overall system complexity compared to multiple independent optical systems.
3Volume of moving object
If the display screen size is reduced for wearable devices, then device portability is improved, but image resolution and quality deteriorate
Solution Approach 1:
The patent replaces the direct viewing of large display screens with an optical system that uses light transmission, convergence, and reflection. Instead of mechanically enlarging the display screen, the system uses optical lenses to converge light and create magnified virtual images, substituting mechanical size with optical manipulation to achieve high resolution on small screens.
Solution Approach 2:
The optical system changes the parameters of light propagation through the optical path. The light-converging lenses alter the convergence parameter of light rays, and the light-reflecting mirrors change the direction parameter of light. These parameter changes enable the system to maintain high image resolution while using a small display screen by manipulating how light travels and focuses.
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 optical assembly enables the display of high-resolution VR images on small-sized screens, improving user experience by maintaining image definition and reducing the space occupied by VR components.
Implementation Method 1
a light-transmitting device, configured to receive light of a left-eye display image and light of a right-eye display image, and transmit the light of the left-eye display image and the light of the right-eye display image to a light-converging device
Implementation Method 2
the light-converging device, configured to converge the light of the left-eye display image and the light of the right-eye display image to a light-reflecting device, wherein a size of a first display image formed by converging the light of the left-eye display image is smaller than a size of the left-eye display image
Implementation Method 3
the light-reflecting device, configured to reflect light of the first display image to a left eye of a user, and reflect light of the second display image to a right eye of the user
Data Source
AI summary
An optical assembly and a virtual reality device are provided. The optical assembly includes a light-transmitting device, a light-converging device, and a light-reflecting device. The light-transmitting device is configured to receive light of a left-eye display image and light of a right-eye display image, and transmit the light of the left-eye display image and the light of the right-eye display image to a light-converging device. The light-converging device is configured to converge the light of the left-eye display image and the light of the right-eye display image to a light-reflecting device. A size of a first display image formed by converging the light of the left-eye display image is smaller than a size of the left-eye display image, and a size of a second display image formed by converging the light of the right-eye display image is smaller than a size of the right-eye display image. The light-reflecting device is configured to reflect light of the first display image to a left eye of a user, and reflect light of the second display image to a right eye of the use.

