Liquid Lens Holder Terminal Layout for Stable Focus Control

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Solution Overview

Problem

Existing camera devices with liquid lenses face challenges in providing stable electrical connections and minimizing size perpendicular to the optical axis, especially when the number of electrodes increases.

Innovation Solution

A camera device with a conductive pattern structure that includes a holder, lens holder, and variable lens unit, featuring separate connection terminals connected by a conductive member, allowing for flexible design and minimizing size perpendicular to the optical axis.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If the number of electrodes of liquid lens increases, then the functionality and control precision are improved, but the device complexity and design difficulty increase

Engineering Contradiction:

Improvefocus control precisionVSAvoidconductive pattern complexity

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The holder terminal is divided into multiple separate terminals, each independently connected to corresponding electrodes of the liquid lens. This segmentation allows each terminal to be designed and connected separately, reducing the overall complexity of the conductive pattern while maintaining precise control over multiple electrodes

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The holder acts as an intermediary component between the liquid lens and the external control system. It provides a standardized interface with multiple terminals that simplifies the connection process and reduces design complexity by abstracting the internal electrode wiring from the external interface

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If the holder terminal is disposed on the upper surface of the holder, then the electrical connection stability is improved, but the size perpendicular to the optical axis increases

Engineering Contradiction:

Improveelectrical connection stabilityVSAvoidmodule height

Core Design Contradiction:

ReliabilityVSLength of stationary object

Solution Approach 1:

The holder terminal extends from the upper surface downward into the holder body, utilizing the vertical dimension within the existing module height. This allows the terminal to maintain stable electrical contact while not increasing the overall height of the lens module, as the terminal structure is integrated within the existing spatial envelope

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

3Adaptability or versatility

If separate connection terminals are used, then the design flexibility is improved, but the manufacturing complexity increases

Engineering Contradiction:

Improveconductive pattern design flexibilityVSAvoidassembly complexity

Core Design Contradiction:

Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

Multiple connection terminals are integrated into a single holder component, combining what could be separate parts into one unified structure. This merging simplifies manufacturing by reducing the number of discrete components that need to be handled and assembled, while still maintaining the design flexibility of having multiple independent connection points

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentUS12487506B2Camera device

Publication Date: 2025.12.02 LG INNOTEK CO LTD

AI summary

The present embodiment relates to a camera device comprising: a holder; a lens holder coupled to the holder; a variable lens unit arranged in the lens holder; and a holder terminal arranged on the holder, wherein the holder terminal is arranged on the upper surface of the holder and includes a first area electrically connected to the variable lens unit, and the variable lens unit does not overlap with the holder in the direction vertical to an optical axis.