Parallel Endoscope Lens Positioning Structure for Assembly Accuracy
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Solution Overview
Problem
Existing endoscope designs fail to maintain fixed relative distances and positions among multiple lenses, leading to alignment inaccuracies and low assembly yield during the fitting process.
Innovation Solution
A positioning structure comprising a separating-positioning component with an upright abutting wall and clamping walls to constrain a second lens module, ensuring precise positioning of two parallel lenses relative to each other, using an adhesive for fixation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If multiple lenses are disposed on support plates without a positioning structure, then the assembly process is simple, but the relative positions and distances among lenses cannot be maintained accurately
Solution Approach 1:
The positioning structure is divided into distinct functional elements: a positioning component with clamping walls for constraining lens modules, an abutting wall for positioning, and a separating component for maintaining distances. This segmentation allows each element to perform its specific function efficiently while keeping the overall structure manageable and not overly complex.
Solution Approach 2:
The positioning structure acts as an intermediary component between multiple lens modules, providing a standardized interface that ensures accurate relative positioning. The clamping walls and abutting walls serve as mediating structures that transfer and maintain precise spatial relationships without requiring direct complex interactions between lens modules.
2Measurement precision
If no positioning mechanism is used for lenses, then the device structure is simple, but alignment accuracy during assembly deteriorates
Solution Approach 1:
The positioning structure is pre-configured with clamping walls and abutting walls at specific geometries and positions before assembly. These preliminary structural arrangements ensure that when lens modules are installed, they automatically achieve the correct alignment and relative positioning without requiring complex real-time adjustment mechanisms during assembly.
3Productivity
If lenses are positioned without constraints, then the assembly process is fast, but the yield and quality of assembled products decrease
Solution Approach 1:
The positioning structure enables lens modules to self-position and self-align through the geometric constraints provided by clamping walls and abutting walls. When components are inserted into the positioning structure, they automatically assume their correct positions without requiring complex external alignment tools or procedures, thereby improving assembly yield while maintaining reasonable structural complexity.
Data Source
AI summary
A positioning structure for holding two parallel lenses of an endoscope relative to each other, including: a separating-positioning component having a first lens module fixed on a right side thereof, an abutting wall and two clamping walls disposed on a left side thereof, and a slot formed jointly by the abutting wall and the two clamping walls; and a second lens module having one end abutting against the abutting wall, being parallel to the first lens module, and being constrained by the two clamping walls and thus being unable to move forward and backward relative to the separating-positioning component. The second lens module is fixed to the separating-positioning component, allowing the first lens module and the second lens module to be positioned relative to each other using the separating-positioning component.