Lens Molding Frame with Connection Passages for De-center Reduction
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Solution Overview
Problem
The challenge is to achieve mass production of lenses with desirable curvature for camera modules using liquid-phase curing materials while minimizing the de-center phenomenon, which occurs due to material contraction, leading to performance degradation.
Innovation Solution
An apparatus and method involving a molding frame with adjacent molding grooves and connection passages to uniformly fill and cure photo-curable resin composition, ensuring even distribution and reducing the de-center issue.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a liquid-phase curing material is used to fabricate lenses, then mass production is enabled, but the de-center phenomenon occurs due to material contraction
Solution Approach 1:
The molding frame is divided into multiple independent molding grooves, each capable of forming a separate lens. This segmentation allows simultaneous production of multiple lenses while maintaining individual control over material distribution and curing in each groove, preventing de-centering caused by uneven contraction.
Solution Approach 2:
The invention introduces connection passages that create a network structure for material flow, ensuring uniform distribution of liquid-phase curing material across different regions of the molding frame. This local quality control ensures that each molding groove receives adequate material flow and curing uniformity, preventing de-centering while enabling mass production.
2Productivity
If multiple wafers are stacked and aligned at desirable positions, then lens array formation is achieved, but de-centering occurs due to material contraction during curing
Solution Approach 1:
The molding grooves are pre-configured in the molding frame at desired positions and orientations before material injection. The connection passages are also pre-formed to ensure proper material distribution. This preliminary arrangement of the molding structure ensures that when liquid-phase material is injected and cured, the lenses are formed at the correct positions without de-centering, enabling efficient lens array formation.
Solution Approach 2:
The invention changes the physical state of the material from solid to liquid-phase curing material, which allows for better flow and distribution through the connection passages. This parameter change enables the material to reach all molding grooves uniformly before curing, maintaining alignment accuracy while improving production efficiency.
3Duration of action of stationary object
If upper and lower portions of the lens are cured at different speeds, then curing is completed, but the upper portion offsets from the lower portion causing performance degradation
Solution Approach 1:
The connection passages create a balanced material distribution network that ensures uniform material flow and curing conditions across all regions of the molding frame. This equipotential approach ensures that upper and lower portions of the lens receive equivalent material pressure and curing conditions, eliminating the offset problem caused by differential curing speeds while completing the curing process.
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 approach enables the production of lenses with improved yield and reduced de-center phenomenon, facilitating mass production of high-quality lenses for camera modules with complex structures.
Implementation Method 1
a light source or a heat source to irradiate a light or a heat onto the source material in the molding frame
Implementation Method 2
a light source or a heat source to irradiate a light or a heat onto the source material in the molding frame
Implementation Method 3
injecting a source material into a molding frame... irradiating a light or a heat to the source material
Implementation Method 4
irradiating a light or a heat to the source material
Data Source
AI summary
Disclosed are an apparatus for fabricating a lens. The apparatus for fabricating a lens includes a molding frame to receive a source material injected through an injection port, and a light source or a heat source to irradiate a light or a heat onto the source material in the molding frame. The molding frame includes a plurality of molding grooves adjacent to each other and at two connection passages to connect the molding grooves to each other.