Camera Assembly Light Shielding Member Design

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Solution Overview

Problem

The existing arrangement of a camera and flash on a mobile phone's rear wall leads to scattered light from the flash affecting the camera, resulting in unbalanced light and poor photo quality, including issues like overexposure and white colors.

Innovation Solution

A camera assembly featuring a composite plate with a first hole for ambient light and a second hole for flash light, along with an annular light shielding member on the internal wall of the first hole to prevent flash light from reaching the camera, enhancing mechanical strength and maintaining the scattering effect of the flash.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Shape

If the camera and flash are arranged side by side on the rear wall, then the mobile phone appearance is beautified and the structure is compact, but scattered light from the flash reaches the camera causing unbalanced light and poor photo quality

Engineering Contradiction:
Improvearrangement layoutVSAvoidscattered light interference
Core Design Contradiction:
ShapeVSObject-affected harmful factors

Solution Approach 1:

A light shielding member is introduced as an intermediary element between the flash and camera. This member includes a light shielding plate positioned between the flash and camera to block scattered light, and a light shielding groove on the camera surface that further prevents light interference. The intermediary structure effectively isolates the harmful scattered light while maintaining the compact side-by-side arrangement.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Object-affected harmful factors

If a light shielding structure is added to prevent flash light from reaching the camera, then photo quality is improved, but the device structure becomes more complex

Engineering Contradiction:
Improvelight interferenceVSAvoidstructure complexity
Core Design Contradiction:
Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The light shielding member is integrated with the camera assembly structure. The light shielding plate is positioned within the camera module housing, and the light shielding groove is formed directly on the camera surface. This merging approach incorporates the light shielding function into the existing device structure rather than adding separate independent components, thereby reducing overall structural complexity.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The camera assembly housing serves multiple functions: it protects the camera sensor, provides structural support, and simultaneously acts as the light shielding structure through the integrated light shielding groove and plate. This multi-functionality eliminates the need for dedicated separate light shielding components, simplifying the overall device structure.

Inventive Principle:
Principle #6Universality (Multi-functionality)

3Object-affected harmful factors

If the flash light is completely blocked from reaching the camera, then photo quality improves, but the flash scattering effect is reduced

Engineering Contradiction:
Improvelight interferenceVSAvoidscattered light effect
Core Design Contradiction:
Object-affected harmful factorsVSObject-generated harmful factors

Solution Approach 1:

The light shielding member is strategically positioned to block light only in the specific direction toward the camera sensor, while leaving other directions unaffected. The light shielding plate is angled and positioned to intercept scattered light paths to the camera, whereas the light shielding groove is designed to allow forward-scattered light to still illuminate the subject effectively. This local quality approach selectively blocks harmful light paths while preserving beneficial scattering effects.

Inventive Principle:
Principle #3Local quality

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 solution improves photo quality by preventing scattered flash light from reaching the camera, thus avoiding overexposure and white colors, while maintaining the flash's scattering effect, thereby enhancing user experience.

Implementation Method 1

The annular light shielding member is disposed on an internal wall of the first hole and configured to prevent the lights emitted from the flash from reaching the camera

Methodology Applied
Scientific EffectLight blocking: Absorption (EM radiation)

Implementation Method 2

The composite plate defines a first hole enabling ambient lights to pass through the first hole and reach the camera subassembly

Methodology Applied
Scientific EffectLight transmission: Light

Implementation Method 3

The composite plate further defines a second hole enabling lights emitted from the flash to pass through the second hole and reach outside

Methodology Applied
Scientific EffectLight transmission: Light

Data Source

PatentEP3633448B1Camera assembly and electronic device
Publication Date: 2022.06.29 GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP LTD
  • EP3633448B1 patent drawingFigure 1
  • EP3633448B1 patent drawingFigure 2
  • EP3633448B1 patent drawingFigure 3

AI summary

The present disclosure provides a camera assembly. The camera assembly includes a camera subassembly, a flash subassembly, a composite plate, and an annular light shielding member. The camera subassembly includes a camera and a camera lens. The flash subassembly includes a flash. The composite plate covers the camera subassembly and the flash subassembly. The composite plate is provided with a first hole enabling ambient lights to pass through the first hole and reach the camera subassembly. The composite plate is provided with a second hole enabling lights emitted from the flash to pass through the second hole and reach outside. The annular light shielding member is disposed on an internal wall of the first hole. The annular light shielding member is configured to prevent the lights emitted from the flash from reaching the camera. The technical solution provided by the present disclosure improves the user experience.