Funnel-Array Detector for Single-Exposure 3D Depth Imaging
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Solution Overview
Problem
Existing imaging devices struggle to efficiently capture three-dimensional image information using a single device, often requiring complex equipment or limited depth information due to the depth of field.
Innovation Solution
A detector comprising an array of funnel elements and photosensitive elements that capture electromagnetic radiation in focus at multiple planes, allowing simultaneous detection of image information from different depths using a single exposure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a single imaging device is used to capture three-dimensional image information, then the acquisition speed is fast and the equipment is simple, but the depth information is limited by the depth of field
Solution Approach 1:
The patent introduces a vertical dimension by placing multiple imaging devices at different heights above the object plane. Each device captures image information from a different depth plane, effectively adding a height dimension to the imaging system. This allows simultaneous capture of multiple depth layers without requiring sequential imaging, thus maintaining fast acquisition speed while improving depth information accuracy.
Solution Approach 2:
The imaging system is segmented into multiple independent imaging devices, each responsible for capturing a specific depth plane. This segmentation allows each device to operate within its optimal depth of field range while collectively covering a broader depth range. The segmented approach enables parallel capture of multiple depth information layers, resolving the contradiction between acquisition speed and depth precision.
2Measurement precision
If additional imaging devices are used to acquire depth information, then the three-dimensional image information is improved, but the equipment complexity increases
Solution Approach 1:
Each imaging device in the array is designed to perform multiple functions: capturing image information from its specific depth plane, contributing to the overall three-dimensional reconstruction, and potentially serving as a reference for calibration. This multi-functionality reduces the need for additional specialized equipment, thereby improving depth information accuracy while limiting the increase in equipment complexity.
Solution Approach 2:
Multiple imaging devices are merged into a coordinated array system with unified control and processing. The devices work together as an integrated system rather than separate units, sharing common timing, synchronization, and data processing resources. This merging approach enables improved depth information accuracy while minimizing the complexity increase that would result from managing multiple independent systems.
3Measurement precision
If multiple imaging devices are used to capture image information from different planes, then the depth information is improved, but the equipment becomes complex and the acquisition process becomes time-consuming
Solution Approach 1:
The imaging devices operate simultaneously and continuously to capture image information from different depth planes. There is no sequential processing or waiting between captures, as all devices record their respective depth layers in parallel during a single exposure interval. This continuous parallel operation maintains high acquisition speed while improving depth information accuracy through multi-plane capture.
Solution Approach 2:
The imaging devices are pre-positioned at optimized heights corresponding to different depth planes of interest before the imaging process begins. This preliminary arrangement eliminates the need for dynamic adjustment or repositioning during acquisition, allowing immediate simultaneous capture of multiple depth layers. The pre-configured geometry enables improved depth precision without adding acquisition time or operational 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
Enables fast acquisition of three-dimensional image information with high resolution and depth detail using straightforward equipment, without the need for complex setups or additional imaging devices.
Implementation Method 1
the entrance end has a size larger than half of the second wavelength of electromagnetic radiation in a medium from which the electromagnetic radiation enters the detector for capturing electromagnetic radiation in focus at the second plane, and wherein the exit end has a size smaller than half of the first wavelength of electromagnetic radiation in the medium
Implementation Method 2
an array of photosensitive elements for detecting electromagnetic radiation incident on the array of photosensitive elements
Data Source
AI summary
Example embodiments relate to detectors for detecting electromagnetic radiation. One embodiment includes a detector for detecting electromagnetic radiation spanning a range from a first wavelength to a second wavelength. The detector includes an array of funnel elements for propagating electromagnetic radiation from a second plane towards a first plane. Each of the funnel elements includes an entrance end and an exit end. The entrance ends of the array of funnel elements define the second plane. The entrance end is larger than half of the second wavelength in a medium from which the electromagnetic radiation enters the detector. The exit end is smaller than half of the first wavelength of in the medium. The detector also includes an array of photosensitive elements for detecting electromagnetic radiation incident on the array of photosensitive elements. Each funnel element is associated with a photosensitive element. The array of photosensitive elements defines the first plane.