Aperture Module Rotating Plate Blade Nesting
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Solution Overview
Problem
Camera modules in portable electronic devices face challenges in adjusting the amount of incident light due to structural limitations, resulting in limited aperture selection and increased thickness for diverse incident hole sizes.
Innovation Solution
An aperture module with a rotating plate and blades that adjust the incident hole size by rotating, allowing for selective control of light entry, featuring a link mechanism and guide grooves to maintain thinness and precise control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a mechanical aperture with multiple blades is used to achieve diverse incident hole sizes, then the aperture selection range is improved, but the thickness of the aperture module increases
Solution Approach 1:
The patent implements a nested structure where blades are positioned inside an opening formed in the rotating plate. The blades are disposed at substantially the same position in the optical axis direction as the rotating plate, with blades overlapping each other in the optical axis direction. This nesting arrangement allows multiple blades to be contained within a compact thickness, enabling diverse aperture sizes without increasing module thickness.
Solution Approach 2:
The patent transitions from a conventional mechanical aperture structure to a planar rotating plate structure where blade movement is controlled in the radial direction rather than requiring axial stacking. The link mechanism converts rotational motion into radial blade movement, allowing the incident hole size to be adjusted by changing the radial position of blades rather than stacking multiple blade layers axially.
2Length of stationary object
If the aperture module is made thinner to fit portable electronic devices, then the spatial limitation is improved, but the ability to provide diverse incident hole sizes deteriorates
Solution Approach 1:
The patent employs a dynamic rotating plate structure that can rotate to different angular positions, with links connecting the rotating plate to blades to convert this rotation into radial movement. This dynamic mechanism allows the incident hole size to be continuously adjusted within a thin profile, providing diverse aperture selections without requiring increased thickness.
3Device complexity
If fixed aperture values are used to reduce complexity, then the device complexity is improved, but the light control flexibility deteriorates
Solution Approach 1:
The rotating plate structure inherently provides both the mechanical support and the aperture control function. The links automatically convert the simple rotational motion of the plate into the complex radial movement pattern needed for blade positioning, allowing the structure to self-generate diverse aperture sizes from a single rotational input without requiring complex independent control mechanisms for each blade.
Data Source
AI summary
An aperture module includes: a base; a rotating plate rotatably disposed on the base; and blades configured to form an incident hole and move by rotation of the rotating plate to change a size of the incident hole. The blades are disposed in an opening disposed inside the rotating plate.