Moire Pattern Imaging Device Using Microlens Array
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Solution Overview
Problem
Current optical lens assemblies in electronic devices, such as smartphones and digital cameras, are thick, hindering the miniaturization of these devices due to their bulky design.
Innovation Solution
A moiré pattern imaging device is developed, comprising a light-transmitting film with a microlens array and an optical sensor with a pixel array, forming a moiré pattern effect to achieve imaging magnification, significantly reducing the overall thickness by using a microlens array and pixel array correspondence, allowing for a thin design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If traditional optical lens assemblies are used, then imaging function is achieved, but device thickness increases
Solution Approach 1:
The patent segments the traditional single optical lens into multiple microlenses arranged in an array. Each microlens has a small aperture and focuses light onto corresponding pixel regions, achieving imaging functionality while reducing individual lens thickness to micrometer scale
Solution Approach 2:
The patent transitions from a single thick optical lens to a two-dimensional array of microlenses on a thin film substrate. This dimensional transformation allows the optical system to achieve comparable imaging performance with dramatically reduced thickness by distributing optical function across multiple elements in the lateral dimension
2Length of moving object
If microlens array is used to reduce thickness, then device thickness is reduced, but imaging magnification capability must be maintained
Solution Approach 1:
The patent introduces a moiré pattern formation mechanism as an intermediary between the microlens array and the pixel array. By creating overlapping periodic patterns, the system achieves magnification of the imaged object without requiring additional optical path length, thus maintaining thin profile while enhancing imaging magnification capability
Solution Approach 2:
The patent combines multiple functional layers including microlens array, light-transmitting film, and pixel array to create a composite optical system. This composite structure integrates light focusing, pattern formation, and detection functions in a thin stacked configuration, achieving both reduced thickness and maintained imaging performance
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 moiré pattern imaging device achieves imaging magnification while greatly reducing the thickness of the optical system, making it thinner than traditional optical lens assemblies, thus enabling thinner electronic devices without compromising imaging capabilities.
Implementation Method 1
The plurality of microlenses are disposed on the light-incident surface, the light-exit surface or a combination thereof... The microlens array and the pixel array correspondingly form a moiré pattern effect to produce an imaging magnification effect
Implementation Method 2
The microlens array and the pixel array correspondingly form a moiré pattern effect to produce an imaging magnification effect
Implementation Method 3
the photosurface of the optical sensor senses light and forms a moiré pattern magnification image
Data Source
AI summary
A moiré pattern imaging device includes a light-transmitting film and an optical sensor. The light-transmitting film includes a plurality of microlenses, and a light-incident surface and a light-exit surface opposite to each other. The plurality of microlenses are disposed on the light-incident surface, the light-exit surface or a combination thereof, and the plurality of microlenses are arranged in two dimensions to form a microlens array. The optical sensor includes a photosurface. The photosurface faces the light-exit surface of the light-transmitting film, the photosurface is provided with a plurality of pixels, and the plurality of pixels are arranged in two dimensions to form a pixel array. The microlens array and the pixel array correspondingly form a moiré pattern effect to produce an imaging magnification effect, and the photosurface of the optical sensor senses light and forms a moiré pattern magnification image.