Aperiodic Optical Sensor Arrays Eliminating Aliasing
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Solution Overview
Problem
Conventional optical sensors and modulators with regular square or hexagonal arrays suffer from periodic artifacts such as aliasing, moiré patterns, and sidelobes due to their periodic sampling structure, which limits their resolution and fidelity in imaging and antenna applications.
Innovation Solution
The use of aperiodic arrays with einstein electrically addressable elements, such as 13-sided or curve-sided elements, that tessellate without gaps and are isotropic, reducing periodic artifacts and allowing for pseudo-random sampling, thereby enhancing resolution and reducing the Nyquist sampling frequency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If regular square or hexagonal arrays are used for optical sensors and modulators, then manufacturing and addressing are simplified, but periodic artifacts such as aliasing, moiré patterns, and sidelobes occur due to periodic sampling structure
Solution Approach 1:
The patent applies asymmetry by using aperiodic arrays where elements are positioned at non-uniform intervals and orientations, breaking the periodic symmetry of conventional square or hexagonal grids. This asymmetric arrangement eliminates periodic artifacts like aliasing and moiré patterns while maintaining manufacturability through systematic design rules for element placement
2Device complexity
If regular periodic arrays are used, then device structure is simplified and easier to control, but resolution and fidelity are limited due to periodic sampling constraints
Solution Approach 1:
The patent changes the spatial parameters of the array from uniform periodic spacing to aperiodic non-uniform spacing. By varying the positions, orientations, and spacing of elements according to specific design rules, the system achieves higher resolution and fidelity without excessive complexity, as the aperiodic pattern follows systematic placement criteria
3Measurement precision
If aperiodic arrays with einstein elements are used, then periodic artifacts are eliminated and resolution is enhanced, but device complexity increases due to non-standard element shapes and arrangements
Solution Approach 1:
The patent segments the aperiodic array into individually addressable elements with standardized components (such as photodetectors or liquid crystal modulators) that maintain uniform manufacturing processes. Each element is independently controllable, allowing complex aperiodic patterns to be built from simpler modular units, thus managing device complexity while achieving high resolution
4Speed
If conventional periodic sampling is used, then sampling frequency requirements are higher due to Nyquist constraints, but data acquisition speed is maintained
Solution Approach 1:
The patent employs dynamic element orientation where elements can be rotated or reoriented to different angular positions. This dynamic capability allows the aperiodic array to adapt its sampling pattern, reducing the effective sampling frequency needed while maintaining high data acquisition speed through optimized element configurations that capture more information per sample
Data Source
AI summary
Aperiodic arrays of light sensors, light modulators, light emitters, or antenna transmitters or receivers include einstein sensors, modulators, emitters, antenna transmitters, or phased array antenna receivers. Various einstein device embodiments of electrically addressable elements are disclosed.