Lens Carrier Side Insertion for Miniaturized Lens Driving Device

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Solution Overview

Problem

The miniaturization of lens driving devices is hindered by the need for a sliding wall in the lens carrier to accommodate the lens barrel, which prevents the carrier from being miniaturized.

Innovation Solution

A box-shaped lens carrier with specific openings allows the lens barrel to be inserted from a direction intersecting the optical axis, enabling the lens carrier to be miniaturized by eliminating the need for sliding walls and allowing the lens barrel to be mounted between opposing side walls.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If the lens barrel is inserted into the lens carrier from the optical axis direction, then the lens barrel can be fixed without threads, but the lens carrier requires sliding walls that prevent miniaturization

Engineering Contradiction:

Improvethreadless fixationVSAvoidlens carrier size

Core Design Contradiction:

Ease of manufactureVSVolume of moving object

Solution Approach 1:

The patent inverts the conventional insertion direction by introducing the lens barrel through a side opening perpendicular to the optical axis rather than from the optical axis direction. This reversal eliminates the need for sliding walls while maintaining threadless fixation, thereby enabling miniaturization of the lens carrier.

Inventive Principle:

Principle #13The other way round (Inversion)

Solution Approach 2:

The patent changes the insertion dimension from the optical axis direction (one-dimensional approach) to a side direction perpendicular to the optical axis (two-dimensional approach). This dimensional shift allows the lens barrel to be mounted between opposing side walls without requiring sliding walls, thus reducing the lens carrier size.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

2Ease of operation

If sliding walls are provided in the lens carrier for lens barrel insertion, then the lens barrel can be mounted, but the lens carrier cannot be miniaturized

Engineering Contradiction:

Improvelens barrel mountingVSAvoidlens carrier size

Core Design Contradiction:

Ease of operationVSVolume of moving object

Solution Approach 1:

Instead of providing sliding walls for lens barrel insertion from the optical axis direction, the patent inverts the approach by creating a side opening perpendicular to the optical axis. This allows the lens barrel to be inserted from the side and fixed between opposing side walls, eliminating sliding walls and enabling miniaturization.

Inventive Principle:

Principle #13The other way round (Inversion)

Solution Approach 2:

The patent extracts and removes the sliding wall structure from the lens carrier design. By eliminating this unnecessary component and replacing it with a side opening configuration, the lens carrier achieves miniaturization while maintaining the lens barrel mounting function.

Inventive Principle:

Principle #2Taking out (Extraction)

3Volume of moving object

If the lens carrier is miniaturized by eliminating sliding walls, then the device size is reduced, but the lens barrel insertion method must be changed

Engineering Contradiction:

Improvelens carrier sizeVSAvoidinsertion structure

Core Design Contradiction:

Volume of moving objectVSDevice complexity

Solution Approach 1:

The patent resolves the complexity issue by inverting the insertion approach. Instead of using sliding walls that require complex guidance structures, the lens barrel is inserted from the side through a simple opening and fixed between opposing side walls, achieving miniaturization with a simpler structure.

Inventive Principle:

Principle #13The other way round (Inversion)

Solution Approach 2:

By changing the insertion dimension to the side direction perpendicular to the optical axis, the patent simplifies the insertion structure. The lens barrel passes through a side opening and is secured between opposing side walls, eliminating the need for sliding wall mechanisms and reducing overall device complexity.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

Data Source

PatentUS11543619B2Lens driving device, camera device and electronic apparatus

Publication Date: 2023.01.03 NEW SHICOH MOTOR CO LTD(JP)

AI summary

A lens driving device includes: a box-shaped lens carrier for fixing a lens barrel to the inside thereof which lens barrel is for guiding light from an imaging target to a photo detecting sensor, wherein the lens carrier has a first opening through which light from the imaging target enters, a second opening through which light toward the photo detecting sensor exits, and a third opening for mounting the lens barrel, wherein the third opening is formed between ends of two opposing side walls of the box-shaped lens carrier other than side walls being formed with the first opening and the second opening, wherein inner surfaces of the two opposing side walls are formed in parallel with respect to each other from the third opening to the center of the lens carrier.