Interchangeable Lens Mount Structure for Imaging Unit Stress Isolation

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Solution Overview

Problem

Components in cameras, such as optical elements, are prone to stress from external sources, affecting their positioning accuracy.

Innovation Solution

A light receiving apparatus with a body, exterior portion, and mount that secures an interchangeable lens, where the body and exterior portion are covered by a front cover, top cover, and back cover, with a body-side mount that increases stiffness at the point of attachment, reducing stress transfer to the body.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a mirror box supporting an imaging element is supported on a main frame by a shock resistant support member, then shock resistance is improved, but components are still prone to receiving stress from the outside

Engineering Contradiction:

Improveshock resistanceVSAvoidstress on components

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The camera body is divided into separate functional modules: a body housing containing the imaging element, a lens mount for attaching lenses, and a shock-resistant support structure. This segmentation allows each component to be optimized independently, with the support member specifically designed to absorb external shocks while keeping the imaging element and optical components isolated from stress.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

A shock-resistant support member acts as an intermediary between the external environment and the imaging element. This support member absorbs and dissipates external stresses before they can reach the imaging element or optical components, thereby protecting them while still allowing the camera to maintain structural integrity.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Stability of the object's composition

If the body and exterior portion are secured to the mount, then structural stability is improved, but stress can be transferred to the body

Engineering Contradiction:

Improvestructural stabilityVSAvoidstress transfer to body

Core Design Contradiction:

Stability of the object's compositionVSStress or pressure

Solution Approach 1:

The mount is designed with differentiated local properties: certain regions provide rigid securing for structural stability, while other regions incorporate shock-absorbing characteristics. The support member is specifically configured to secure the body and exterior portion to the mount while isolating the main body from stress through strategic placement and material selection in critical areas.

Inventive Principle:

Principle #3Local quality

Data Source

PatentUS20250362571A1Imaging device including an imaging element, a mount, and members

Publication Date: 2025.11.27 NIKON CORP

AI summary

Provided is a light receiving apparatus including a first light receiving unit; a body to which the first light receiving unit is secured; a first exterior portion that covers at least a portion of the body; and a mount that is capable of having an interchangeable lens attached thereto, to which the body and the first exterior portion are secured. Also provided is a light receiving apparatus, in which a body to which a first light receiving unit is secured and a first exterior portion that covers at least a portion of the body are secured to a mount that is capable of having an interchangeable lens attached thereto, and force placed on the first exterior portion is absorbed by the mount, such that transfer of the force placed on the first exterior portion to the body is reduced.