Aperture Module Diagonal Magnetic Actuation for Blade Space
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Solution Overview
Problem
Typical aperture modules for mobile camera modules have limited space for arranging blades due to the dispositional structure of the driver, which restricts the adjustment of the incident hole size.
Innovation Solution
The aperture module includes a base, a rotator, a plurality of blades, ball members between the base and the rotator, a magnet portion, and a coil portion, where an attractive force acts diagonally between the base and the rotator, allowing for a wider dispositional space for the blades.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If a typical driver structure is used to control the aperture blades, then the aperture module can be manufactured with conventional methods, but the space available for arranging the blades is limited
Solution Approach 1:
The patent applies dimensionality change by transitioning from a conventional linear driver structure to a rotational driver structure. The driver rotates the rotator assembly, which in turn rotates the blades around the optical axis. This rotational motion in a different dimensional approach allows the blades to be arranged in a circular pattern around the optical axis, significantly increasing the available space for blade arrangement compared to linear displacement methods.
Solution Approach 2:
The patent employs asymmetry in the blade arrangement where multiple blades are positioned at different radial distances from the optical axis. The first blade is arranged at a first distance and the second blade at a second distance, creating an asymmetric configuration that optimizes the incident hole shape and light control while maximizing the utilization of available space around the optical axis.
2Ease of manufacture
If the driver structure is simplified for easier manufacturing, then manufacturing cost decreases, but the ability to adjust incident hole size effectively is reduced
Solution Approach 1:
The rotator assembly serves multiple functions: it rotates the blades to adjust the incident hole size, maintains the relative positions of multiple blades at different radial distances, and enables the aperture to control light in various configurations. This multi-functional design achieves effective incident hole size adjustment without requiring complex separate mechanisms for each function, thereby maintaining ease of manufacture.
Solution Approach 2:
The patent merges the rotation control of multiple blades into a single rotational motion of the rotator. By combining the adjustment of the first blade at the first distance and the second blade at the second distance into one rotational operation, the system achieves versatile incident hole size adjustment while simplifying the manufacturing process compared to having independent control mechanisms for each blade.
3Manufacturing precision
If more blades are arranged closer to the optical axis to increase aperture precision, then the incident hole shape control improves, but the space required for blade disposal increases
Solution Approach 1:
The patent utilizes the radial dimension around the optical axis to arrange blades at different distances. By positioning blades at varying radial distances (first distance and second distance from the optical axis) rather than only in a single plane, the system achieves precise incident hole shape control without requiring excessive disposal space, as the radial arrangement efficiently packs blades around the optical axis.
Solution Approach 2:
The patent applies local quality by positioning blades at specific radial distances based on their functional requirements. The first blade at the first distance and the second blade at the second distance are arranged according to their specific roles in shaping the incident hole, optimizing local blade positioning for precision while maintaining efficient overall space utilization through the rotational symmetry of the arrangement.
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 design ensures a stable and efficient operation of the aperture module by providing a wider space for blade arrangement, enabling effective adjustment of the incident hole size and improving the overall performance of the camera module.
Implementation Method 1
a magnet portion disposed on one of the rotator and the base; and a coil portion disposed on another of the rotator and the base, wherein an attractive force acts between the base and the rotator
Data Source
AI summary
An aperture module is provided. The aperture module includes a base; a rotator configured to rotate with respect to the base; a plurality of blades configured to form incident holes having different sizes based on a rotation of the rotator; a plurality of ball members disposed between the base and the rotator; a magnet portion disposed on one of the rotator and the base; and a coil portion disposed on another of the rotator and the base, wherein an attractive force acts between the base and the rotator in a diagonal direction between a first axis direction parallel to an optical axis and a second axis direction perpendicular to the first axis direction.