Microlens Array Shape for Light Field 3D Depth of Field
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Solution Overview
Problem
Current light field 3D display technologies using microlens arrays face limitations in depth of field due to rapid image sharpness decrease beyond the focal point, making existing multi-focal optical systems complex and unsuitable for integration.
Innovation Solution
A display panel with a microlens structure featuring a substrate and a microlens array where the microlenses are shaped by rotating continuous curves around an axis, allowing parallel light to converge to two focal points, increasing the depth of field and improving 3D display effects with a simple and integratable design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional microlens array is used to record and restore light field information, then the 3D display can be realized, but the depth of field is limited due to rapid image sharpness decrease beyond the focal point
Solution Approach 1:
The microlens is divided into multiple lens portions (first lens portion, second lens portion, etc.) along the optical axis, each with different focal lengths. This segmentation allows different regions of the microlens to focus light at different depths, thereby extending the overall depth of field while maintaining image sharpness across multiple focal planes.
Solution Approach 2:
Different portions of the microlens are designed with different optical properties (different focal lengths) to serve different functions. The first lens portion focuses light at one focal point while the second lens portion focuses light at another focal point, creating local quality variations that enable extended depth of field coverage.
2Length of moving object
If a multi-focal optical system is designed to focus light at different positions to improve depth of field, then the depth of field increases, but the system structure becomes more complex and unsuitable for integration
Solution Approach 1:
Multiple lens portions with different focal lengths are merged into a single integrated microlens structure. This combining approach achieves multi-focal functionality without requiring separate optical components, thereby extending depth of field while maintaining structural simplicity and ease of integration.
Solution Approach 2:
The single microlens structure performs multiple functions by incorporating different lens portions with different focal lengths. This multi-functional design allows the microlens to focus light at multiple positions simultaneously, achieving extended depth of field without increasing system complexity.
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 proposed solution enhances the depth of field and 3D display quality by converging light to two focal points, improving image clarity across a wider range while simplifying the microlens structure for easier integration.
Implementation Method 1
the microlens structure includes a substrate and a microlens array, the microlens array includes a plurality of microlenses arranged in an array, shapes of the microlens are formed by rotating a plurality of continuous curves around an axis... the parallel light emitted by the display assembly can be converged to two focal points
Data Source
AI summary
The present disclosure provides a display and a display panel thereof. The display panel includes a display assembly, a microlens structure disposed on the display assembly. The microlens structure includes a substrate and a microlens array. The microlens array is disposed on the surface of the substrate away from the display assembly. The microlens array includes a plurality of microlenses arranged in an array, and shapes of the microlens are formed by rotating a plurality of continuous curves around an axis. By setting the shape of the microlens to be a shape formed by rotating a plurality of continuous curves around an axis, the parallel light emitted by the display assembly can be converged to two focal points, the depth of field displayed by the light field 3D can be increased, the 3D display effect can be improved.