Lens Array Segmentation for Compact Near-Eye Display Crosstalk Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Near-eye display apparatuses face challenges with field-of-view crosstalk and limited miniaturization due to the spacing between the display and lens, which affects the focal length and overall size, especially in augmented and virtual reality devices.
Innovation Solution
A lens array with adjustable spacings and gaps between lenses, combined with a shielding mechanism, to ensure non-overlapping field-of-view areas and improved light distribution, reducing crosstalk and facilitating miniaturization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If a microlens array is used to reduce the focal length and spacing between display and lens, then the overall size of the near-eye display apparatus is reduced, but field-of-view crosstalk is caused
Solution Approach 1:
The lens array is divided into multiple independent lenses with gaps between them, where each lens independently controls a specific field-of-view area. This segmentation prevents light from one lens from interfering with adjacent lenses, thereby eliminating field-of-view crosstalk while maintaining compact size through the microlens array structure.
Solution Approach 2:
Each lens in the array is designed with specific local optical properties and spacing that ensures its field-of-view area does not overlap with adjacent lenses. The gaps between lenses are strategically designed to prevent light leakage, providing localized control over light paths and eliminating crosstalk in each region.
2Length of moving object
If the diameter of the lens is reduced to decrease the focal length, then the spacing between display and lens is reduced, but the field-of-view coverage is limited
Solution Approach 1:
Multiple small lenses are combined in an array configuration to achieve the field-of-view coverage of a single large lens while maintaining the compact focal length of small lenses. The collective field-of-view area of the lens array equals that of a conventional single lens with the same overall diameter, but each individual lens maintains a short focal length suitable for compact near-eye display design.
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 enhances user experience by preventing field-of-view crosstalk, expanding the eye box range, and improving imaging definition while allowing for a more compact design of the electronic device.
Implementation Method 1
The lens array includes a plurality of lenses... the optical component is configured to change a propagation path of a light ray incident through the lens array
Data Source
AI summary
An electronic device includes a lens array, a display, and an optical component. The display includes a display surface, configured to display an image. The lens array is disposed on a side of the display surface of the display, the lens array includes a plurality of lenses, and there is a gap between any two adjacent lenses. The optical component is disposed on a side that is of the lens array and that is away from the display, and the optical component is configured to change a propagation path of a light ray incident through the lens array.