Electro-Responsive Gel Lens for 3D Autofocus and Image Stabilization
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing lens technologies, such as those using the electrowetting phenomenon, can only perform auto focus in the optical axis direction and lack optical image stabilization, and are difficult to miniaturize due to additional components required for shape control.
Innovation Solution
An electro-responsive gel lens with automatic multifocal and image stabilization functions is achieved by using a transmissive part made of electro-active polymer, which changes its shape in three dimensions in response to voltage, incorporating a light collecting member with a fresnel lens configuration and distortion prevention mechanisms to prevent electrical interference between electrodes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If liquid lens using electrowetting phenomenon is used, then auto focus function is achieved, but optical image stabilization function cannot be performed
Solution Approach 1:
The patent applies multi-functionality by enabling the gel lens to perform both auto focus (AF) and optical image stabilization (OIS) functions through a single device. The gel lens deforms in three dimensions under applied voltage, allowing it to simultaneously adjust focal point distance in the optical axis direction (AF) and move the focal point in vertical directions (OIS), thereby eliminating the need for separate mechanisms for each function.
Solution Approach 2:
The patent transitions from two-dimensional focal point adjustment (only in optical axis direction) to three-dimensional focal point adjustment. By applying voltage to the gel lens, the focal point can be moved not only along the optical axis (for AF) but also in vertical directions perpendicular to the optical axis (for OIS), adding dimensional capability to resolve the functional limitation.
2Ease of operation
If additional portions for shape control are added, then lens shape can be controlled, but miniaturization becomes difficult
Solution Approach 1:
The patent merges the shape control function directly into the lens structure by forming electrodes on the lens surface itself. The gel lens integrates the optical function and the actuation function (shape control) into a single component, eliminating the need for separate shape control mechanisms and reducing overall device volume.
Solution Approach 2:
The patent uses a gel lens with flexible properties that can deform its shape in response to applied voltage. The gel material allows the lens to change curvature and focal point position without requiring rigid mechanical structures or additional control components, enabling miniaturization while maintaining shape control capability.
3Measurement precision
If focal point is moved only in optical axis direction, then auto focus is achieved, but image stabilization is not possible
Solution Approach 1:
The patent extends focal point movement from one dimension (optical axis direction only) to three dimensions. The gel lens can shift the focal point along the optical axis (for precise focusing) and also in vertical directions perpendicular to the optical axis (for image stabilization), providing both precise positioning and stabilization capabilities through dimensional expansion.
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
Enables both auto focus and optical image stabilization in three dimensions, allowing for the miniaturization of electronic devices by changing the focal point location without the need for additional space, thereby enhancing the functionality and compactness of the device.
Implementation Method 1
a transmissive part formed of an electro-active polymer and having a shape deformed when a voltage is applied to the first electrode and the second electrode
Data Source
AI summary
An electro-responsive gel lens having automatic multifocal and image stabilization functions according to the present invention comprises: a first electrode and a second electrode formed on a substrate and having different polarities; and a transmissive part which is formed of an electroactive polymer, and the shape of which is deformed when a voltage is applied to the first electrode and the second electrode, wherein at least one of the first electrode and the second electrode is formed in the plural, and a voltage is individually applied so as to change the shape of the transmissive part in three dimensions, such that the location of the focal point of light passing through the transmissive part is changed in three dimensions.