3D Shadow Scanning Using Integrated Light and Sensor Pixels
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Solution Overview
Problem
Current display devices, such as micro-LED and liquid crystal display devices, lack the capability to efficiently capture three-dimensional data of objects by simultaneously illuminating and sensing shadows, limiting their functionality in creating detailed three-dimensional structures.
Innovation Solution
An electronic device comprising a matrix of light emitting elements and image sensing elements on a shared substrate, where the light emitting area is moved to capture shadows and create three-dimensional data by alternately controlling the light emitting and image sensing elements, allowing for adjustable illumination and image sensing based on object structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If display devices use conventional liquid crystal or organic EL structures, then they achieve basic display functionality, but they cannot efficiently capture three-dimensional data of objects
Solution Approach 1:
The display device integrates both light emitting elements and image sensing elements within the same display area, enabling the device to perform multiple functions: displaying images and capturing three-dimensional shadow data of objects. This multi-functionality resolves the contradiction by making the display device adaptable for both traditional display purposes and advanced 3D measurement applications.
Solution Approach 2:
The patent combines light emitting elements and image sensing elements on the same substrate within the display area. This merging of illumination and sensing capabilities into a single integrated structure enables the device to simultaneously emit light for illumination and capture shadow images for three-dimensional data acquisition, thereby improving measurement precision while maintaining display functionality.
2Measurement precision
If light emitting elements and image sensing elements are arranged on the same substrate in a display area, then three-dimensional data capture capability is improved, but device complexity increases
Solution Approach 1:
Each pixel unit in the display device is designed to perform multiple functions: displaying light and sensing shadows. By making each pixel unit universal in its functionality, the patent reduces the need for separate dedicated sensing components, thereby managing device complexity while improving three-dimensional data capture capability.
Solution Approach 2:
The display area is segmented into multiple pixel units, each containing both light emitting and image sensing elements. This segmentation allows for independent control and operation of each pixel unit, enabling flexible scanning patterns and shadow capture strategies that can be optimized for different measurement scenarios, thus managing complexity through modular design.
3Measurement precision
If the light emitting area is moved to scan the object, then detailed three-dimensional data can be captured, but the time required for measurement increases
Solution Approach 1:
The light emitting area scans the object in a periodic manner, systematically moving through different regions of the object in a controlled sequence. This periodic scanning approach allows for efficient data collection by visiting each region at regular intervals, optimizing the balance between measurement detail and time consumption.
Solution Approach 2:
The system performs preliminary scanning to identify regions of interest or areas requiring higher detail before conducting comprehensive measurements. This preliminary action allows the device to allocate measurement time more efficiently, focusing detailed scanning only where necessary, thereby reducing overall measurement time while maintaining required detail accuracy.
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 the creation of detailed three-dimensional data of objects by capturing shadows generated by the light emitting elements, allowing for flexible scanning and improved data accuracy depending on object complexity, and can be integrated into display devices like smartphones for 3D camera functionality.
Implementation Method 1
LED display devices using light emitting diodes (LEDs) which are self-luminous light emitting elements
Implementation Method 2
capturing a shadow generated by the object by a plurality of image sensing elements
Data Source
AI summary
According to one embodiment, a method for controlling an electronic device includes illuminating an object while moving a light emitting area formed by turning on light emitting elements simultaneously, capturing a shadow generated by the object by image sensing elements on a same substrate as the light emitting elements, and creating three-dimensional data about an outer shape of the object based on a shadow image.