Series Light Cone Array for Large Field of View High Resolution Imaging
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Solution Overview
Problem
Existing large-field-of-view optical systems face a trade-off between resolution and field of view, typically resulting in low resolution for wide views and small fields of view for high-resolution systems, limiting their application in fields like space remote sensing and security monitoring.
Innovation Solution
A large-field-of-view high-resolution imaging device is developed by combining a series light cone array, formed by connecting large and small light cones in series, with an enhanced Charge Coupled Device (CCD) and a Cesium Iodide phosphor screen, which increases light transmittance, reduces image distortion, and enhances image brightness and contrast.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a single optical system uses more pixels to increase gross information content, then the field of view and resolution become contradictory parameters, but the resolution of a large-field-of-view optical system is often low while the field of view of a high-resolution optical system is often small
Solution Approach 1:
The patent divides the imaging system into multiple imaging units, each with its own light cone array and enhanced CCD. By segmenting the overall field of view into multiple smaller fields captured by individual units, each unit can maintain high resolution while the combined array achieves a large total field of view. The splicing and combining of multiple imaging units allows simultaneous achievement of high resolution and large field of view that cannot be obtained by a single optical system.
2Area of stationary object
If large light cones are directly coupled to a camera, then the field of view is large, but the light transmittance is insufficient and image brightness decreases
Solution Approach 1:
The patent transitions from a single-dimensional light cone structure to a multi-dimensional series light cone array structure. By arranging light cones in series along the optical path and coupling multiple imaging units in both horizontal and vertical directions, the system increases light transmittance through the series configuration while expanding the field of view through the two-dimensional array arrangement, thereby improving image brightness without sacrificing field of view.
3Measurement precision
If the number of pixels is increased to improve resolution, then the field of view must be reduced, but achieving both high resolution and large field of view simultaneously is difficult
Solution Approach 1:
The patent employs a nested structure where multiple imaging units are arranged in an array format with each unit containing a complete light cone array and enhanced CCD subsystem. The imaging units are spliced and combined in a nested manner, allowing the system to achieve high resolution through the pixel arrays in each unit while maintaining a large field of view through the overall array configuration. This nested arrangement manages system complexity by creating modular, repeatable units that can be scaled.
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
This configuration achieves higher resolution and larger field of view compared to direct coupling of large light cones, improving image quality and efficiency while maintaining arbitrary field of view expansion.
Implementation Method 1
The series light cone array is configured to conduct an optical signal and formed by connecting a large light cone and a small light cone in series
Implementation Method 2
a Cesium Iodide (CsI) phosphor screen
Implementation Method 3
a CCD camera for converting the optical signal into an electrical signal and storing imaging information in the form of a digital signal
Data Source
AI summary
A large-field-of-view high-resolution imaging device includes an imaging array formed by splicing and combining a plurality of imaging units and a CSI phosphor screen. Each imaging unit is formed by coupling an array of light cones in series and an enhanced CCD. The series light cone array is formed by connecting a large light cone and a small light cone in series such that a small end face of the large light cone is connected with a large end face of the small light cone, a large end face of the large light cone is attached to the CSI phosphor screen, and a small end face of the small light cone serves as an input window of an image enhancer. The enhanced CCD is formed by coupling the image enhancer and a CCD camera. A photosensitive screen of the CCD camera serves as an output window of the image enhancer.