Lens Module Recessed Support for Light Shading

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Solution Overview

Problem

The existing lens modules are hindered by the size increase due to the arrangement of light shading members between lenses, which obstructs the miniaturization of the design.

Innovation Solution

The design incorporates a recessed supporting portion on the first lens to house the light shading member along the optical axis, reducing the overall size of the lens barrel and preventing damage from hard contact by creating gaps between optical elements.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-affected harmful factors

If a light shading member is arranged between the lenses in the lens module, then the light shading function is improved, but the size of the lens module increases

Engineering Contradiction:

Improvelight shading functionVSAvoidlens module size

Core Design Contradiction:

Object-affected harmful factorsVSVolume of moving object

Solution Approach 1:

The light shading member is integrated with the supporting portion of the first lens to form a unified structure. The supporting portion serves dual functions: mechanically supporting the first lens and housing the light shading member. This merging eliminates the need for separate light shading components and reduces overall module size while maintaining effective light shading between lenses.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The light shading member is nested within the recessed cavity of the supporting portion. This nested arrangement allows the light shading function to be embedded within the existing structural footprint of the lens assembly, rather than adding external volume. The light shading member fits into the recessed space that would otherwise be unused, achieving space-efficient integration.

Inventive Principle:

Principle #7Nested doll (Nesting)

2Volume of moving object

If the lens module is miniaturized, then the compactness is improved, but the risk of damage from hard contact between optical elements increases

Engineering Contradiction:

Improvelens module sizeVSAvoidprotection from hard contact

Core Design Contradiction:

Volume of moving objectVSReliability

Solution Approach 1:

The supporting portion incorporates a recessed cavity that provides pre-configured clearance space between the first lens and other optical elements. This built-in cushioning space prevents hard contact and potential damage during assembly or operation, while the integrated light shading member maintains this protective spacing without requiring additional external components.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

Data Source

PatentUS11209718B2Lens module

Publication Date: 2021.12.28 AAC OPTICS SOLUTIONS PTE LTD

AI summary

The present disclosure relates to the field of optical lenses, and discloses a lens module. In the present disclosure, the lens module includes a lens barrel, a first lens disposed in the lens barrel, and a light shading member disposed in the lens barrel and abutting against the first lens. The first lens includes an optical portion for imaging and a supporting portion surrounding the optical portion. The supporting portion is recessed from an object side towards an image side to form a receiving portion. The light shading member is at least partially disposed in the receiving portion in a direction of an optical axis. The lens module according to the present disclosure can facilitate achieving a miniaturized design.