Variable Aperture Wiring Assembly for Lens Focus Stability
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Solution Overview
Problem
Conventional variable aperture assemblies in camera modules experience poor signal transmission due to electrical connection issues affected by focus movement, leading to unpredictable imaging effects, especially in high-end electronic devices with advanced optical systems.
Innovation Solution
An imaging lens module design incorporating a casing, imaging lens, lens carrier, elastic element, variable through hole module, and wiring assembly, where the wiring assembly includes a fixed and movable part with flexible connections to maintain electrical contact during auto-focusing, ensuring stable aperture control and image quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a conventional variable aperture assembly is used to control the depth of field and incident light amount, then the functionality requirements are met, but the electrical connection is easily affected by focus movement, resulting in poor signal transmission and unexpected imaging effects
Solution Approach 1:
The wiring assembly is divided into a fixed wiring part and a movable wiring part. The fixed wiring part remains stationary while the movable wiring part moves with the lens carrier during focus adjustment, ensuring continuous stable electrical connection to the variable through hole module throughout the focusing range
Solution Approach 2:
The movable wiring part acts as an intermediary between the fixed wiring part and the variable through hole module. It transfers electrical signals while accommodating the relative motion between the lens carrier and casing, maintaining reliable electrical connection despite focus movement
2Manufacturing precision
If a larger image sensor is used to provide better image quality, then the image quality is improved, but the depth of field becomes overly shallow, causing the background to become blurry
Solution Approach 1:
The variable through hole module enables dynamic adjustment of the aperture size, allowing the depth of field to be adjusted in real-time. This compensates for the overly shallow depth of field caused by the large image sensor, providing flexibility to control background blur according to different shooting scenarios
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
The design effectively stabilizes the electrical connection between the variable through hole module and the wiring assembly, allowing for precise control of the aperture size, thereby enhancing image quality and reducing unexpected imaging effects in high-end electronic devices.
Implementation Method 1
The elastic element is connected to the lens carrier to provide the lens carrier with a translational degree of freedom along a direction parallel to the optical axis
Data Source
AI summary
An imaging lens module includes a casing, an imaging lens disposed to the casing, a lens carrier supporting the image lens, an elastic element connected to the lens carrier to provide the lens carrier with a translational degree of freedom along an optical axis, a frame connected to the elastic element such that the lens carrier is movable along the optical axis with respect to the frame, a variable through hole module coupled to the imaging lens and having a light passable hole with a variable aperture size, and a wiring assembly including a fixed wiring part at least partially located closer to the opening than the elastic element and a movable wiring part electrically connected to the fixed wiring part and the variable through hole module. The optical axis passes through lens elements of the imaging lens and the center of the variable through hole module.