Liquid Lens Membrane Control for Compact Autofocus and Handshake Correction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing optical devices face challenges in achieving high resolution and compact size with autofocus and handshake correction functions due to increased size and power consumption from lens driving mechanisms, which are not efficiently addressed by traditional lens systems.
Innovation Solution
A liquid lens assembly comprising a conductive and non-conductive liquid interface controlled by a membrane, where the curvature is electrically adjustable using electrodes, allowing for efficient autofocus and handshake correction without increasing device size or power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional lens driving mechanisms are used to achieve autofocus and handshake correction functions, then the optical device can perform these functions, but the device size and power consumption increase
Solution Approach 1:
The patent replaces traditional mechanical lens driving mechanisms with a liquid lens system that uses electrical signals to control the curvature of liquid interface. The liquid lens includes a conductive liquid, a non-conductive liquid, and a membrane that can be electrically actuated to change the refractive power, enabling autofocus and handshake correction without mechanical moving parts, thereby reducing power consumption and eliminating the need for magnets and coils
Solution Approach 2:
The patent changes the physical parameters of the lens system by using variable curvature of the liquid interface. By electrically controlling the membrane to adjust the curvature radius of the liquid-liquid interface, the refractive power of the lens can be dynamically changed, enabling focus adjustment and image stabilization functions through parameter modulation rather than mechanical movement
2Adaptability or versatility
If traditional lens driving mechanisms are used to achieve autofocus and handshake correction functions, then the optical device can perform these functions, but the device thickness increases due to required free space for driving range
Solution Approach 1:
The patent eliminates the need for mechanical driving space by replacing traditional lens modules with a liquid lens system. The liquid lens can be actuated within a much smaller space using electrical fields, eliminating the requirement for large free space needed for mechanical lens driving ranges, thereby reducing the overall thickness of the camera module and optical device
Solution Approach 2:
The patent transitions from mechanical displacement in one dimension to electrical field control in another dimension. Instead of moving lens modules physically along the optical axis requiring significant space, the liquid lens uses electrical voltage applied to the membrane to change the interface curvature, achieving the same optical effect in a compact three-dimensional configuration
3Adaptability or versatility
If the number of lenses is increased to achieve high resolution and various photographing functions, then the photographing functions are improved, but the size of the optical device increases
Solution Approach 1:
The patent makes a single liquid lens perform multiple functions that traditionally required multiple separate lens modules. By electrically controlling the membrane to achieve different curvature radii, the same liquid lens can provide autofocus, handshake correction, and potentially other photographing functions, eliminating the need to stack multiple lenses and reducing the overall optical device size
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 liquid lens assembly effectively controls the curvature of the liquid interface for autofocus and handshake correction, enhancing efficiency and reducing wave front errors while maintaining a compact form factor and low power consumption.
Implementation Method 1
research on a liquid lens that performs an autofocus and/or handshake correction function by electrically controlling the curvature of the interface between two kinds of liquids is being conducted
Implementation Method 2
a liquid lens assembly comprising a conductive and non-conductive liquid interface controlled by a membrane, where the curvature is electrically adjustable using electrodes
Data Source
AI summary
Provided is a liquid lens assembly. A liquid lens according to an aspect of the present invention comprises: a first plate including a cavity; a first liquid which is conductive and disposed in the cavity; a second liquid which is non-conductive and disposed in the cavity; and a membrane disposed between the first liquid and the second liquid.