Dual Camera Module Nesting in Glass Rear Cover
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Solution Overview
Problem
Modern handheld electronic devices face challenges in integrating multiple subsystems such as touch-sensitive displays, cameras, and wireless communication systems into a compact and reliable form factor that can withstand daily use, while providing a wide range of functionalities.
Innovation Solution
A portable electronic device design featuring a housing with a touch-sensitive display, a sensor array including dual camera modules with different fields of view, a light source, and a glass rear cover with a raised sensor array region, along with a bracket member and biasing springs for structural support, and a wireless charging coil for power reception.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple subsystems (cameras, display, wireless communication) are integrated into a compact device, then device functionality is improved, but device complexity increases
Solution Approach 1:
The device is divided into distinct functional modules: a front module containing the display and front camera, and a rear module containing the sensor array with multiple cameras. These modules are coupled together, allowing each to be optimized independently while maintaining overall integration. This segmentation manages complexity by creating modular subsystems that can be developed and assembled separately.
Solution Approach 2:
The patent implements nested structures where camera modules are positioned within recesses in the housing, and the sensor array is integrated into the rear module which itself is part of the overall device housing. The front camera is nested within the front module, and additional cameras are nested within the sensor array region, creating a compact layered arrangement that maximizes functionality within limited space.
2Illumination intensity
If camera modules are positioned in corners of the device, then field of view is improved, but manufacturing precision requirements increase
Solution Approach 1:
The patent employs asymmetric positioning of camera modules within the sensor array. The first camera is positioned in a first corner region, the second camera in a second corner region diagonal from the first, and a third camera in a third corner region. This asymmetric diagonal arrangement optimizes field of view coverage while using the housing structure itself to define and maintain precise positions, reducing the need for additional precision manufacturing steps.
Solution Approach 2:
The housing is designed with pre-formed recesses and raised regions that define the positions of camera modules before final assembly. The rear cover defines a raised sensor array region with holes positioned at corner regions, creating predetermined mounting locations that guide component placement and reduce alignment requirements during manufacturing.
3Strength
If a glass rear cover is used, then device durability is improved, but structural support requirements increase
Solution Approach 1:
The patent incorporates biasing springs that apply pre-compression forces to the glass rear cover and sensor array assembly. These springs are positioned to provide cushioning and stress distribution before external forces are applied, protecting the glass from impact and preventing cracking. The springs compensate for thermal expansion and mechanical stresses, reducing the risk of glass failure.
Solution Approach 2:
The device employs a composite structure combining glass rear cover with metal or polymer housing components. The glass provides durability and aesthetic qualities, while the surrounding housing structure provides structural support and mounting features. This composite approach allows each material to contribute its strengths: glass for surface durability and housing for structural integrity.
Data Source
AI summary
A portable electronic device includes a housing, a sensor array including a first camera module having a first field of view, a second camera module having a second field of view different from the first field of view, and a light source, and a rear cover formed from a glass material and defining a raised sensor array region positioned over the sensor array. The raised sensor array region defines a first hole extending through the rear cover and positioned proximate a first corner region of the raised sensor array region, and a second hole extending through the rear cover and positioned proximate a second corner region diagonal from the first corner region. The first camera module includes a first camera housing defining a recess at a corner of the first camera housing, and the second camera module includes a second camera housing extending into the recess.