Micro-display Optical System for Hand-held Virtual Image Magnification
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Solution Overview
Problem
Hand-held electronic devices with small screens provide a poor visual experience due to limited screen size and low resolution, failing to meet increasing user demands for larger images while maintaining portability.
Innovation Solution
A hand-held electronic device equipped with an image processor, a micro-display, and a first optical system that forms a magnified virtual image, allowing users to view a larger image through a window when close, without the need for a large screen, and with low power consumption, usable in various lighting conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If the screen size of hand-held electronic device is increased to improve visual experience, then the image size and resolution are improved, but the portability of the device deteriorates
Solution Approach 1:
The patent uses a micro-display to generate an optical image that is magnified by an optical system, creating a virtual enlarged image in the air. This copying approach allows the device to display large images without physically enlarging the screen, thus maintaining portability while improving visual experience
Solution Approach 2:
The patent transitions from a two-dimensional screen display to a three-dimensional virtual image display in the air. By using an optical system to create a magnified virtual image, the display content extends into the third dimension, allowing larger image size without increasing device footprint
2Area of moving object
If a micro-projector is used to magnify the image, then the image size is increased, but the power consumption increases and it is limited by ambient light
Solution Approach 1:
The patent replaces the projector's light source and lens system with a micro-display and compact optical system. This substitution reduces power consumption while achieving similar magnification效果, and the micro-display's self-emissive nature makes it less sensitive to ambient light conditions
Solution Approach 2:
The patent changes the optical parameters by using a compact optical system with specific focal length relationships (object distance less than focal length) to achieve magnification with lower power consumption. The system optimizes the optical path to reduce energy requirements while maintaining image quality
3Weight of moving object
If the screen size is kept small to maintain portability, then the device remains portable, but the visual experience deteriorates due to small image size and low resolution
Solution Approach 1:
The micro-display creates a high-resolution optical image that is then magnified by the optical system. This copying process allows the small micro-display to produce a large virtual image with high resolution, effectively decoupling the physical display size from the perceived image quality
4Ease of operation
If the display content is visible from a distance, then the user can view the content easily, but the privacy is compromised as others can also see the content
Solution Approach 1:
The patent creates a dynamic viewing experience where the virtual image's visibility changes based on the observer's distance from the device. When the user approaches the device, the magnified virtual image becomes visible, providing both convenience and privacy. This dynamic characteristic allows the system to adapt to different viewing scenarios
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 users to view larger images with improved resolution and privacy, as the content is only visible when close to the device, while maintaining portability and low power consumption, and can be used both indoors and outdoors.
Implementation Method 1
a first optical system configured to receive light emitted from the first display and change the light path of the light emitted from the first display to form a first magnified virtual image
Data Source
AI summary
The embodiments of the present disclosure provide a hand-held electronic device and a display method, the hand-held electronic device comprising an image processor configured to provide image data; a first display configured to display the first image based on the image data; a first optical system configured to receive light emitted from the first display and change the light path of the light emitted from the first display to form a first magnified virtual image, wherein the length of the light path between the first optical system and the first display is shorter than the focus of the first optical system; a first window configured to allow a viewer to see the first magnified virtual image through the first optical system when the viewer comes close to the first window.