Convex Lens Positioning Mechanism for Precise Surface Patterning
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Solution Overview
Problem
Accurately positioning a convex optical surface during lens patterning is challenging due to its curved nature, which complicates the precise alignment and processing required for high-quality patterns.
Innovation Solution
A lens positioning mechanism that includes a member holding unit with an auxiliary tool to bias the lens and an attitude control unit to regulate the position of the lens using a predetermined portion on the convex surface, allowing for precise positioning and processing of the lens in a predetermined attitude.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a convex curved optical surface is used for lens design, then optical performance is improved, but positioning accuracy deteriorates
Solution Approach 1:
The patent introduces an auxiliary tool as an intermediary device that contacts the convex optical surface at a predetermined portion. This auxiliary tool serves as a mediator between the positioning mechanism and the lens, enabling accurate positioning by regulating the position of the predetermined portion on the convex surface without requiring direct complex positioning of the curved surface itself
Solution Approach 2:
The member holding unit performs preliminary action by biasing the lens member toward the convex optical surface before positioning occurs. This pre-biasing action ensures that the lens is in the correct state for subsequent positioning by the attitude control unit, making the positioning process more straightforward and accurate
2Manufacturing precision
If a convex curved optical surface is used for lens design, then optical performance is improved, but processing complexity increases
Solution Approach 1:
The auxiliary tool acts as a simplifying intermediary that converts the complex task of positioning a convex curved surface into a simpler task of regulating the position of a predetermined portion. This reduces the overall complexity of the positioning mechanism while maintaining high patterning precision
Solution Approach 2:
The positioning function is segmented into two independent units: the member holding unit that provides biasing and holding, and the attitude control unit that provides positioning. This segmentation allows each unit to be optimized independently, reducing overall system complexity while achieving high precision
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables easy and highly accurate positioning of lenses with convex optical surfaces, improving the precision of patterning and reducing the complexity of the processing procedure, resulting in higher quality patterns with reduced dimensional variations.
Implementation Method 1
a pad that holds the second surface of the lens member by vacuum suction
Data Source
AI summary
A technique capable of easily and highly accurately perform positioning of a lens member having a convex optical surface. A lens positioning mechanism is configured to include: a member holding unit that has a function of holding a lens member via an auxiliary tool attached to a second surface of the lens member having a first surface, which is a convex optical surface, and the second surface, which is an optical surface facing the first surface, and biasing the held lens member toward a side of the first surface; and an attitude control unit that abuts on a predetermined portion on the first surface of the lens member biased on the member holding unit to regulate a position of the predetermined portion and positions the lens member in a predetermined attitude.