Compact Camera Module Bracket Layout to Block Light Leakage

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Solution Overview

Problem

The miniaturization of camera modules for electronic devices is hindered by the need to maintain structural integrity and prevent light leakage while reducing size, as existing designs often require larger components and outer walls for support.

Innovation Solution

The camera module incorporates a bracket with a support plate and support member that eliminates the outer wall, allowing for a compact design by positioning the lens assembly directly on the support plate and using a heat dissipation plate and connecting member to manage heat and structural support, along with a filling member to absorb impacts and prevent light leakage.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If outer walls and larger support structures are used to maintain structural integrity, then strength and stability are improved, but the camera module size increases

Engineering Contradiction:

Improvestructural integrityVSAvoidcamera module size

Core Design Contradiction:

StrengthVSArea of stationary object

Solution Approach 1:

The bracket is divided into multiple functional segments: a support plate for mounting the image sensor, support members for structural reinforcement, and a heat dissipation plate. This segmentation allows each component to be optimized for its specific function while collectively achieving both miniaturization and structural integrity.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The bracket serves multiple functions simultaneously: it provides structural support, dissipates heat from the image sensor, and maintains the precise spatial relationships between components. The heat dissipation plate integrated into the bracket exemplifies multi-functionality, combining thermal management with structural support in a single component.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Area of stationary object

If components are positioned closer together to reduce size, then area is reduced, but light leakage risk increases

Engineering Contradiction:

Improvecamera module sizeVSAvoidlight leakage

Core Design Contradiction:

Area of stationary objectVSObject-affected harmful factors

Solution Approach 1:

The bracket acts as an intermediary structure between the lens assembly and the image sensor, providing precise positioning and light shielding. The support members extend from the bracket to hold the lens assembly at the correct distance and angle, ensuring that light paths are controlled and no stray light reaches the sensor.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The bracket features localized light shielding structures at critical positions where light leakage could occur. The support plate and support members are designed with specific geometries that block stray light paths while maintaining open areas for necessary light transmission, applying different qualities to different regions of the same component.

Inventive Principle:

Principle #3Local quality

3Area of stationary object

If compact design is implemented to miniaturize the module, then area is reduced, but heat dissipation effectiveness may worsen

Engineering Contradiction:

Improvecamera module sizeVSAvoidheat dissipation

Core Design Contradiction:

Area of stationary objectVSTemperature

Solution Approach 1:

The heat dissipation function is merged with the structural support function in the bracket assembly. The heat dissipation plate is integrated into the bracket structure, allowing heat from the image sensor to be conducted away through the same structural components that provide mechanical support, thereby achieving thermal management without increasing overall module size.

Inventive Principle:

Principle #5Merging (Combining)

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

This configuration effectively miniaturizes the camera module by reducing its size in both X-axis and Y-axis directions, enhances structural support, and prevents light leakage, while maintaining effective heat dissipation and impact absorption.

Implementation Method 1

a heat dissipation plate and connecting member to manage heat

Methodology Applied

Scientific EffectThermal conduction: Conduction (thermal)

Implementation Method 2

a filling member to absorb impacts and prevent light leakage

Methodology Applied

Scientific EffectImpact absorption: Impact Force

Data Source

PatentUS11582371B2Camera module of reduced size in two dimensions and electronic device including the same

Publication Date: 2023.02.14 TRIPLE WIN TECH (SHENZHEN) CO LTD

AI summary

A camera module miniaturized in both width and length includes a baseplate, a lens assembly, and a bracket. The bracket includes a support plate and a support member disposed on the support plate. The support plate includes a first surface facing away from the baseplate and a second surface facing the baseplate. The support plate defines a first opening penetrating the first surface and the second surface. The lens assembly is disposed on the first surface and completely covers the first opening. The support member is located between the support plate and the baseplate. The support member includes a first support portion and a plurality of second support portions arranged at intervals, the first support portion is disposed on the second surface and surrounds the peripheral edge of the first opening. Each second support portion extends outwards from an outer surface of the first support portion.