Endoscope Insertion Part Rectangular Tubular Support Structure

The patent transitions from conventional linear or planar arrangement of imaging components to a three-dimensional spatial configuration. The imaging element is positioned at a specific angle (e.g., 45 degrees) relative to the optical axis, and circuit substrates are arranged in multiple layers or at different orientations, effectively utilizing vertical and radial spaces within the insertion part to improve space utilization.

The patent implements a nested arrangement where the imaging element is positioned within the tubular support member, which is itself inserted into the distal end member. The circuit substrates are arranged in overlapping or nested configurations, with one substrate positioned behind another, allowing multiple components to occupy overlapping spatial footprints and reduce overall volume requirements.

The patent divides the imaging system into functionally independent modules: the imaging element (sensor), the optical system (lenses), and the circuit substrates for signal processing. Each module is positioned at a different location and orientation within the insertion part, allowing them to occupy separate spatial zones and reduce interference, thereby maintaining performance while fitting more components into limited space.

The patent employs asymmetric positioning of components rather than symmetric radial arrangement. The imaging element is offset from the center and positioned at a specific angle, while circuit substrates are arranged asymmetrically at different radial positions and orientations. This asymmetric configuration optimizes space utilization by placing components in non-uniform patterns that better fit the cylindrical geometry of the insertion part.