Optoelectronic Module Non-Circular Sensor Perimeter Ratio
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Solution Overview
Problem
The challenge is to create a small-sized optoelectronic module for endoscopes that can effectively image the interior surfaces of tubular structures while minimizing trauma to patients and improving diagnostic and procedural protocols, without compromising performance or increasing assembly complexity.
Innovation Solution
The design includes a housing with a non-circular image sensor face and a perimeter ratio of S<H<1.6S, where S is the perimeter of the face and H is the perimeter of the module's cross-section, along with a cable system for signal reception and a modular structure that allows for disposable components to reduce contamination risks and enhance maneuverability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If the size of each individual component (camera, fiber bundle) is decreased to meet small-size requirements, then the endoscope can be inserted through small orifices and lumens, but the performance deteriorates and assembly complexity increases
Solution Approach 1:
The patent employs a non-circular image sensor face (rectangular, square, or other polygon shapes) instead of the conventional circular shape. This asymmetric design allows the sensor to be packed more efficiently within the housing, achieving a perimeter ratio S/H between 0.63 and 1.0 that optimizes the balance between small endoscope size and imaging performance. The non-circular configuration enables better space utilization without compromising sensor performance.
2Length of moving object
If the size of each individual component (camera, fiber bundle) is decreased to meet small-size requirements, then the endoscope can be inserted through small orifices and lumens, but the assembly complexity increases
Solution Approach 1:
The patent integrates the image sensor, housing, and optional components (illumination, lens) into a unified optoelectronic module with a specific geometric configuration. The non-circular image sensor face is directly coupled to the housing in a integrated assembly, simplifying the overall structure. This merging of components into a cohesive module reduces assembly complexity while maintaining the small size necessary for insertion through minimal incisions.
Data Source
AI summary
The present invention provides an optoelectronic module and an imaging apparatus such as an endoscope comprising such module. The optoelectronic module includes a housing and an image sensor. The image sensor's face has a perimeter S, the cross section of the optoelectronic module along the face has a perimeter H, and S<H<1.6S. In an example, illumination components such as a flashing LED and the image sensor are confined within the minimum bounding circle of the sensor's face. The invention exhibits technical advantage in minimizing the size of the insert portion of the endoscopy.