Solid State Die Refractive Index Control for Compact Image Focusing
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Solution Overview
Problem
There is a need for image capture systems with advanced focusing capabilities, such as auto-focus, that are both reliable and cost-effective, while also being compact in size.
Innovation Solution
The integration of a solid state die with a plurality of electrodes that can change its refractive index in response to an electric field to focus images, allowing for adjustable focal lengths and improved focusing capabilities in image capture units, even those with fixed focal length lenses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional mechanical focusing mechanisms are used, then focusing capabilities are achieved, but device complexity and manufacturing cost increase
Solution Approach 1:
The patent replaces traditional mechanical focusing mechanisms with a solid state die that uses electric field control to change refractive index. This substitution eliminates moving mechanical parts while achieving focusing capabilities through electro-optic effects, thereby reducing device complexity and manufacturing cost.
Solution Approach 2:
The solid state die changes its refractive index parameter in response to applied electric fields. By dynamically adjusting this optical parameter rather than moving mechanical components, the system achieves focusing functionality with simpler overall device architecture.
2Reliability
If advanced focusing capabilities are integrated, then image quality improves, but manufacturing cost increases
Solution Approach 1:
By replacing complex mechanical focusing systems with a solid state die that uses electric field control, the patent reduces manufacturing complexity and cost while maintaining or improving image quality through precise optical control without moving parts.
Solution Approach 2:
The solid state die represents a cost-effective alternative to expensive mechanical focusing mechanisms. It uses inexpensive materials and fabrication processes while providing the necessary focusing capabilities, making advanced image capture more affordable.
3Volume of moving object
If focusing mechanisms are added to reduce dimension, then compactness is achieved, but device complexity increases
Solution Approach 1:
The patent eliminates mechanical focusing components that would increase device volume by using a solid state die with electric field control. This approach achieves focusing in a compact form factor without the dimensional requirements of mechanical adjustment mechanisms.
Solution Approach 2:
Instead of adding mechanical components in physical space, the patent controls optics through an additional dimension - the electric field domain. This allows focusing functionality without increasing the physical volume of the device.
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 solution provides a low-cost and reduced dimension focusing mechanism that enhances the focusing capabilities of image capture systems, enabling them to capture in-focus images efficiently and effectively.
Implementation Method 1
The refractive index of the solid state die will change in response to the generated electric field to focus the image or scene captured by the lens unit
Data Source
AI summary
Embodiments of the invention describe providing image focusing capabilities for a lens unit of an image capture system by disposing a solid state die over the lens unit. The solid state die may include a plurality of electrodes to receive a voltage or electric signal to generate an electric field. The refractive index of the solid state die will change in response to the generated electric field to focus the image or scene captured by the lens unit. The solid state die is mounted to a folded flexible printed circuit board in a housing or a molded housing having electrodes on its inner wall.