Image Sensor Shielding Mount for EMI Blocking and Heat Dissipation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Image capture devices face issues with lens and image sensor misalignment, damage from impact, electromagnetic interference, and heat buildup, which affect image quality and performance.
Innovation Solution
The image capture apparatus includes a heat sink and shield configuration that aligns lenses and image sensors, blocks electromagnetic interference, and dissipates heat, using a shield coupled to the heat sink to absorb and transfer heat generated by the image capture device and power module.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the image sensor is positioned close to the lens for compact design, then the device size is reduced, but electromagnetic interference from internal components affects image quality
Solution Approach 1:
A shield is introduced as an intermediary component between the image sensor and electromagnetic sources (power module, heat sink). The shield acts as a mediator that blocks electromagnetic waves from reaching the image sensor, allowing the image sensor to be positioned close to the lens without suffering from electromagnetic interference.
2Device complexity
If the image sensor is exposed to heat from the power module and heat sink, then thermal management is simplified, but heat damage to the image sensor occurs
Solution Approach 1:
The shield serves as a thermal barrier between heat-generating components (power module, heat sink) and the image sensor. This intermediary structure blocks excessive heat while allowing the thermal management system to remain integrated and compact, preventing heat damage to the image sensor.
3Volume of moving object
If multiple components (lens, image sensor, heat sink, power module) are integrated in a compact space, then the device becomes more compact, but alignment precision between lens and image sensor deteriorates
Solution Approach 1:
The shield is designed to perform multiple functions simultaneously: it provides electromagnetic shielding, thermal protection, and mechanical alignment reference. By integrating alignment features into the shield structure, the patent achieves precise lens-to-image-sensor alignment without increasing overall device volume.
4Object-affected harmful factors
If the shield is positioned close to the image sensor for effective shielding, then electromagnetic blocking is improved, but heat transfer to the image sensor increases
Solution Approach 1:
The shield is designed with non-uniform properties: it provides dense electromagnetic shielding on the sides facing electromagnetic sources, while incorporating thermal insulation characteristics on surfaces facing heat-generating components. This local differentiation allows the shield to block electromagnetic waves effectively while minimizing heat transfer to the image sensor.
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
Maintains proper alignment and protects the image sensor from electromagnetic interference while effectively dissipating heat, ensuring clear and complete image capture without distortion.
Implementation Method 1
The heat sink is configured to absorb heat generated by the image capture device
Implementation Method 2
The shield is configured to block electromagnetic waves generated external to the image sensor from the reaching the image sensor
Implementation Method 3
The heat sink is configured to transfer the heat generated by the image capture device to the shield
Data Source
AI summary
An image capture apparatus that includes a housing defining a cavity therein, an image capture device, a heat sink located in the cavity of the housing that contacts the image capture device, and a shield located in the cavity of the housing. The image capture device extends through the housing and includes an image sensor located within the cavity of the housing. The heat sink is configured to absorb heat generated by the image capture device. The shield at least partially encloses the image sensor and is coupled to the heat sink. The shield is configured to block electromagnetic waves generated external to the image sensor from the reaching the image sensor. The heat sink is configured to transfer the heat generated by the image capture device to the shield.