Variable Aperture Module Using Pixel Arrays for Dynamic Bokeh Control
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Solution Overview
Problem
Conventional lens systems face challenges in achieving a desirable bokeh effect due to aperture shape and optics, with increasing blade numbers adding complexity and apodisation filters only addressing issues for one aperture size, necessitating a solution for variable light attenuation.
Innovation Solution
An aperture module with an array of pixels that can be variably controlled in transparency and shape to dynamically adjust light throughput, allowing for customizable bokeh effects and adaptable light processing across different aperture sizes and focal lengths.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If the number of aperture blades is increased to improve the circular shape of the aperture, then the aperture shape quality is improved, but the device complexity increases
Solution Approach 1:
The aperture is divided into multiple independent blades (typically 5-9 blades) that can move individually. Each blade is segmented from the others, allowing them to converge toward the center to form a circular aperture. This segmentation enables the complex circular shape to be achieved through multiple simple moving parts rather than a single complex mechanism.
Solution Approach 2:
The aperture blades are designed to be dynamic rather than static, allowing them to change position and shape continuously. The blades can open and close, change angles, and adjust their configuration to form different aperture shapes (circular, polygonal, etc.). This dynamic capability allows the system to achieve variable aperture shapes without adding permanent complex structures.
2Shape
If an apodisation filter is added to soften the edges of the aperture disc, then the bokeh quality is improved, but the device complexity increases
Solution Approach 1:
The apodisation filter function is merged with the existing aperture blade structure. Instead of adding a separate filter element, the aperture blades themselves are designed with edge features that provide the apodisation effect. The blades incorporate rounded edges or specific geometric profiles that naturally soften the aperture disc edges, combining two functions (aperture formation and bokeh optimization) into a single component.
Solution Approach 2:
The aperture blades are designed to serve multiple functions simultaneously: they control the aperture size, define the aperture shape, and provide the apodisation effect for soft bokeh. This multi-functionality eliminates the need for separate dedicated components for each function, reducing overall system complexity while achieving the desired optical effects.
3Manufacturing precision
If an apodisation filter is designed for one aperture size, then the edge softening is optimized for that size, but the adaptability to different aperture sizes is reduced
Solution Approach 1:
The aperture blade edges are designed with dynamic geometric features that automatically adapt to different aperture sizes. As the blades move to change the aperture diameter, the edge features maintain their relative positioning and geometric relationships, providing consistent apodisation effects across all aperture sizes. This dynamic design eliminates the need for multiple fixed filters for different aperture configurations.
Solution Approach 2:
The aperture blade design incorporates parameter changes that allow the same physical structure to provide optimized edge softening across varying aperture sizes. The blades may include curved edges, tapered profiles, or other geometric parameters that scale appropriately as the aperture opens or closes, maintaining the apodisation effect regardless of the specific aperture diameter being used.
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 aperture module provides flexible and customizable bokeh effects, reduces system complexity, and enables improved light attenuation, enhancing image quality by allowing for variable aperture shapes and transparencies, thus addressing the limitations of conventional lens systems.
Implementation Method 1
an aperture module with an array of pixels that can be variably controlled in transparency and shape to dynamically adjust light throughput
Data Source
AI summary
System and apparatus including: a plurality of lens elements; and an aperture module coupled to the plurality of lens elements and including an array of pixels, wherein the aperture module is configured to be variable in pattern and transparency. Key words include variable aperture and pixels.