Optical Scanning Module Rotation Axis Integration
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Solution Overview
Problem
Existing optical detection systems, such as optical coherence tomography, face inefficiencies when scanning large non-circumference areas due to limited rotation angles of rotation mirrors, resulting in incomplete coverage and prolonged scanning times.
Innovation Solution
Integration of a rotation axis module with the optical scanning module, allowing for 2-D scanning by moving the rotation mirror in a 1-D direction and enabling 3-axis rotation, thereby increasing the scanned area and scanning efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the rotation mirror is used to detect large-area non-circumference regions, then the scanning coverage can be improved, but the rotation angle limitation causes incomplete coverage of all regions to be detected
Solution Approach 1:
The patent introduces a second rotational degree of freedom by integrating the rotation axis module with the optical scanning module. The rotation mirror rotates around the first axis, while the optical scanning module rotates around a second axis (the rotation axis). This dimensional expansion from 1-D to 2-D rotation enables comprehensive coverage of large-area non-circumference regions that cannot be covered by a single rotation mirror.
2Area of stationary object
If the entire large-area region is divided into several small regions and scanned in order, then the scanning coverage can be improved, but the scanning time increases significantly
Solution Approach 1:
The integrated rotation axis module enables continuous scanning across the entire large-area region without requiring pausing or repositioning between divided sub-regions. The coordinated rotation of the rotation mirror and optical scanning module allows the scanning beam to continuously cover the full detection area, eliminating the time loss associated with sequential scanning of divided regions.
3Measurement precision
If the rotation mirror rotation angle is limited, then the focusing detection range can be maintained for circumferential regions, but the scanned region fails to cover all regions on large-area non-circumference regions
Solution Approach 1:
The patent resolves this contradiction by adding a second rotational dimension. The rotation mirror maintains its limited rotation angle to preserve focusing quality for circumferential regions, while the optical scanning module rotates around the rotation axis to expand the overall scanned coverage. This multi-dimensional approach allows both high-quality focused detection and comprehensive area coverage to coexist.
Data Source
AI summary
An optical apparatus is disclosed. The optical apparatus includes an optical scanning module and a rotation axis module. The optical scanning module is used to provide an optical signal for optical tomography. The rotation axis module and the optical scanning module are integrated. When the rotation axis module rotates, the rotation axis module makes the optical scanning module to perform a rotation scanning process to an object.