Multi-lens Camera Lens Adjuster with Magnetic Locking

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Solution Overview

Problem

Multi-lens cameras using magnets for locking the mounting disc face issues of increased weight and cost, along with cumbersome operation due to frequent loosening and tightening of fastening screws.

Innovation Solution

A lens adjuster system with a fixing disc and movable brackets that allow P-direction and R-direction adjustments, enabling self-locking fixation without magnets, thus simplifying operation and reducing weight and cost.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If fastening screws are used to lock the mounting disc, then the lenses can be maintained in adjusted positions, but the operation becomes cumbersome and efficiency decreases due to frequent loosening and tightening

Engineering Contradiction:
Improvelens position maintenanceVSAvoidadjustment operation
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The patent replaces the mechanical screw fastening system with a magnetic field-based locking system. The mounting disc is provided with magnetic portions that magnetically attract and hold the lens brackets in position, eliminating the need for mechanical screws while maintaining reliable position maintenance and enabling easy adjustment by simply moving the lens brackets to desired positions where they are automatically locked by magnetic attraction.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

2Ease of operation

If magnets are used to lock the mounting disc, then the operation is simplified and efficiency increases, but the weight and cost of the camera increase due to larger magnets required

Engineering Contradiction:
Improveadjustment operationVSAvoidcamera weight
Core Design Contradiction:
Ease of operationVSWeight of moving object

Solution Approach 1:

The patent divides the magnetic locking function into distributed magnetic portions on the mounting disc rather than using a single large magnet. Multiple smaller magnetic portions are arranged at different positions on the mounting disc, each corresponding to lens bracket positions, achieving the same locking effect with reduced overall magnetic material and thus reduced weight.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent applies magnetic portions only at specific local positions on the mounting disc where lens brackets need to be locked, rather than using a large magnet covering the entire disc. This localized application of magnetic material provides sufficient locking force at critical positions while minimizing overall weight and cost.

Inventive Principle:
Principle #3Local quality

3Productivity

If magnets are used to lock the mounting disc, then the operation is simplified and efficiency increases, but the cost of the camera increases due to larger magnets required

Engineering Contradiction:
Improveadjustment efficiencyVSAvoidmanufacturing cost
Core Design Contradiction:
ProductivityVSEase of manufacture

Solution Approach 1:

The patent segments the magnetic locking system into multiple small magnetic portions on the mounting disc, which are cheaper to manufacture than a single large magnet. The segmented approach reduces material costs and manufacturing complexity while maintaining the simplified operation and high adjustment efficiency provided by magnetic locking.

Inventive Principle:
Principle #1Segmentation

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

The system enhances operational efficiency by allowing manual adjustment and self-locking of lenses, reducing the need for heavy magnets and costly locking mechanisms, thereby decreasing the overall weight and cost of the camera while maintaining precise adjustment capabilities.

Implementation Method 1

the elastic connection portion is elastically deformed, the positioning between the first engaging teeth and the first tooth slots is released

Methodology Applied
Scientific EffectElastic deformation: Elasticity

Implementation Method 2

a tightening portion is provided, the tightening portion tightly attaches the first bracket and the fixing disc to each other

Methodology Applied
Scientific EffectFriction: Friction

Data Source

PatentEP3734957B1Multi-lens camera
Publication Date: 2023.10.18 HANGZHOU HIKVISION DIGITAL TECHNOLOGY CO LTD
  • EP3734957B1 patent drawingFigure 1
  • EP3734957B1 patent drawingFigure 2
  • EP3734957B1 patent drawingFigure 3

AI summary

A multi-lens camera includes a main housing assembly (400), lenses (300), a lens adjuster and a transparent cover (500). The transparent cover (500) is mounted on the main housing assembly (400); the lens adjuster is mounted in the space formed by the main housing assembly (400) and the transparent cover (500); the transparent cover (500) includes a flat portion (510) and a curved portion (520) surrounding the flat portion (510); the lenses (300) are located in the space covered by the curved portion (520); the lens adjuster includes a fixing disc (100) and at least two lens brackets (200); each of the lens brackets (200) includes a first bracket (210) and a second bracket (220) arranged on the first bracket (210); the first support (210) is movably arranged on the fixing disc (100), and is capable of moving along the circumferential direction of the fixing disc (100); a lens (300) is rotationally engaged with the second bracket (220), such that the lens (300) rotates around axis thereof. The multi-lens camera solves the problems of large weight and high cost caused by using a magnet to lock the mounting disc.