Imaging Lens Adhesive Dispensing via Optical Mark Structure
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Solution Overview
Problem
The increasing complexity of optical systems for higher image quality and functionality in electronic devices complicates the adhesive dispensing process, particularly due to reduced tolerance limits, making accurate adhesive placement challenging.
Innovation Solution
An imaging lens system incorporating a plurality of optical elements, a lens barrel, and a curable liquid with an optical mark structure that includes optical mark units with specific projection areas and spacing, allowing for precise adhesive dispensing and component fixation through physical contact and curing of the curable liquid.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If more lens elements and optical elements are applied to increase resolution, then image quality is improved, but manufacturing precision deteriorates due to reduced adhesive dispensing tolerance
Solution Approach 1:
The patent applies preliminary action by providing a groove structure on the lens holder before adhesive dispensing. This groove pre-defines the adhesive placement path and boundaries, ensuring that even with reduced tolerance due to increased optical elements, the adhesive is accurately positioned without requiring higher dispensing precision. The groove acts as a preparatory feature that guides the adhesive application process.
2Ease of manufacture
If more lens elements are applied to increase resolution, then image quality is improved, but ease of manufacture deteriorates due to increased difficulty in adhesive dispensing
Solution Approach 1:
The groove structure serves as an intermediary element between the adhesive dispensing process and the optical elements. It mediates the interaction by providing a physical guide that simplifies the dispensing operation while ensuring accurate adhesive placement. The groove translates the complex requirement of precise adhesive application into a simpler process of filling a pre-defined channel.
3Productivity
If adhesive dispensing tolerance is reduced within limit range, then manufacturing precision is improved, but productivity deteriorates due to increased process difficulty
Solution Approach 1:
The groove structure is prepared in advance on the lens holder, creating a ready-made guide for adhesive application. This preliminary preparation eliminates the need for complex real-time control during dispensing, allowing faster assembly while maintaining precision within the reduced tolerance range. The pre-defined groove path enables workers or automated systems to quickly and accurately apply adhesive without complex positioning operations.
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
This solution enhances the accuracy and yield of the adhesive dispensing process, preventing defects like insufficient or spilled adhesive, thereby improving the assembly speed and ensuring proper fixation of optical elements within the imaging lens system.
Implementation Method 1
The curable liquid is disposed on the optical mark structure, and the curable liquid is in physical contact with the at least one of the plurality of optical mark units. One of the plurality of optical elements adjacent to the optical mark structure is fixed to the lens barrel while the curable liquid is cured.
Data Source
AI summary
An imaging lens system has an optical axis. The imaging lens system includes a plurality of optical elements, a lens barrel, an optical mark structure and a curable liquid. The optical elements are arranged along the optical axis. The lens barrel surrounds the optical axis, and at least one of the optical elements is accommodated in the lens barrel. The optical mark structure is disposed on the lens barrel, and the optical mark structure includes a plurality of optical mark units arranged side by side along a circumference direction that surrounds the optical axis. The curable liquid is disposed on the optical mark structure. The curable liquid is in physical contact with at least one of the optical mark units, and one of the optical elements adjacent to the optical mark structure is fixed to the lens barrel while the curable liquid is cured.