Lens Holder Groove Structure for Impact-Resistant Barrel Mounting

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Solution Overview

Problem

Existing lens holding frames are prone to damage and lens damage when subjected to strong impacts due to partial elastic deformation.

Innovation Solution

A holding member with an outer circumference portion integrally molded with the holder, featuring penetrating grooves along the circumferential direction to reduce impact transmission to the lens.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the lens holding member is made with partial elastic deformation to reduce impact, then the lens is protected from minor impacts, but the lens holding member may get damaged and the lens may get damaged when strong impact is applied

Engineering Contradiction:

Improvelens protectionVSAvoidholding member strength

Core Design Contradiction:

ReliabilityVSStrength

Solution Approach 1:

The holding member is divided into different functional regions: a lens holding portion with contact portions that have elastic deformation capability, and an outer circumference portion with high strength to resist strong impacts. This segmentation allows each part to perform its specific function optimally without compromising the other.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Different parts of the holding member have different material properties and structural characteristics. The contact portions have elastic properties for shock absorption, while the outer circumference portion has high strength for impact resistance. This local differentiation resolves the contradiction between elasticity and strength.

Inventive Principle:

Principle #3Local quality

2Strength

If the lens holding member is made rigid to prevent damage, then the holding member maintains structural integrity, but the lens receives full impact force when external force is applied

Engineering Contradiction:

Improveholding member strengthVSAvoidimpact transmission to lens

Core Design Contradiction:

StrengthVSObject-affected harmful factors

Solution Approach 1:

The holding member is segmented into a rigid outer circumference portion for structural integrity and a flexible contact portion for impact absorption. This segmentation allows the structure to maintain overall strength while locally reducing impact transmission to the lens.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The contact portions act as an intermediary between the external impact and the lens. These portions have elastic properties that allow them to deform and absorb impact energy, serving as a mediator that protects the lens from direct impact forces while the rigid outer structure provides overall support.

Inventive Principle:

Principle #24Intermediary (Mediator)

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

Reduces lens damage by allowing the holding frame to deform elastically without transmitting significant impact to the lens, maintaining lens integrity.

Implementation Method 1

the holder has a plurality of penetrating grooves along a circumferential direction, on an outer circumference side of a plurality of contact portions that contact the lens

Methodology Applied

Scientific EffectElastic deformation: Elasticity

Data Source

PatentUS20260023307A1Holding member, lens barrel, and image pickup apparatus

Publication Date: 2026.01.22 CANON KK

AI summary

A holding member includes a holder configured to hold a lens, and an outer circumference portion integrally molded with the holder and disposed on an outer circumference of the holder. The holder has a plurality of penetrating grooves along a circumferential direction, on an outer circumference side of a plurality of contact portions that contact the lens when viewed from an optical axis direction.