Adjustable Optical Aperture via Index Matching and Absorption
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Solution Overview
Problem
Existing imaging systems face challenges in providing a suitably sized optical aperture, which affects image quality and depth of field, especially in varying lighting conditions and different photography scenarios.
Innovation Solution
An adjustable optical aperture system that can be tuned based on current lighting conditions and other factors, using mechanisms such as index matching, optical absorption, and near field coupling to control the aperture size, allowing for optimal light control and depth of field adjustment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed aperture size is used in the imaging system, then the device complexity is reduced, but the adaptability to different lighting conditions and photography scenarios deteriorates
Solution Approach 1:
The patent implements a dynamic aperture mechanism where the aperture size can be adjusted in real-time based on lighting conditions and photography scenarios. The aperture transitions from a fixed state to a variable state, allowing the imaging system to adapt to different environments (low-light, bright light, portrait, landscape) by changing the aperture opening size, thus resolving the contradiction between adaptability and device complexity.
Solution Approach 2:
The patent changes the aperture parameter (opening size) dynamically to adapt to different lighting conditions. By varying the aperture diameter from small to large based on ambient light levels and desired depth of field, the system achieves versatility without requiring multiple fixed-aperture devices, effectively balancing adaptability with controlled complexity.
2Illumination intensity
If a wider aperture is used to allow more light in low-light environments, then the image brightness is improved, but the depth of field becomes shallower causing background blur
Solution Approach 1:
The patent employs dynamic aperture adjustment that allows real-time optimization between brightness and depth of field. The system can transition the aperture between wide (for brightness in low-light) and narrow (for deep depth of field in landscapes), providing operational flexibility to achieve desired imaging effects based on specific photography needs.
Solution Approach 2:
The patent varies the aperture parameter (opening diameter) to control both light intake and depth of field. By adjusting this single parameter, the system achieves dual control over image brightness and focus range, allowing photographers to optimize for either brightness or depth of field depending on the shooting scenario.
3Object-affected harmful factors
If a narrower aperture is used to reduce light in bright environments, then the image overexposure is prevented, but the image quality deteriorates due to increased noise
Solution Approach 1:
The patent implements dynamic aperture control that adjusts the opening size in response to ambient lighting conditions. In bright environments, the aperture narrows to prevent overexposure, while the system maintains image quality through coordinated adjustments in shutter speed and ISO sensitivity, ensuring reliable imaging across varying light levels.
Solution Approach 2:
The patent changes the aperture parameter dynamically to control light intake in bright conditions. By adjusting the aperture diameter to an optimal narrow setting, the system prevents overexposure while maintaining image quality through balanced exposure triangle parameters (aperture, shutter speed, ISO), resolving the contradiction between overexposure control and image quality.
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
Improves image quality by adjusting aperture size according to lighting conditions, enhancing user experience in various scenarios and enabling flexible depth of field control, suitable for applications like AR, VR, and other imaging systems.
Implementation Method 1
using mechanisms such as index matching, optical absorption, and near field coupling to control the aperture size
Implementation Method 2
using mechanisms such as index matching, optical absorption, and near field coupling to control the aperture size
Implementation Method 3
using mechanisms such as index matching, optical absorption, and near field coupling to control the aperture size
Data Source
AI summary
A size of an optical aperture for an imaging system is adjustable. The size of the optical aperture can be adjusted based on refractive index matching, optical absorption, or near field coupling techniques. These techniques may also be used to provide a high speed optical shutter.