Curved Imager Camera Module With Fluid-Space Thermal Isolation
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Solution Overview
Problem
In camera modules, heat dissipation from the imager can cause a change in the refractive index of air near the optical image formation area, leading to deterioration in optical image capture accuracy.
Innovation Solution
A camera module design featuring a lens member with a biconvex structure, an imager with a curved portion convex away from the lens member, and a light transmitting member optically coupling the lens and imager, along with a seat supporting the imager and containing a fluid space for heat dissipation, which suppresses changes in optical characteristics by maintaining a stable refractive index and facilitating effective heat transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If heat dissipation is performed from the imager, then heat removal is achieved, but the refractive index of air near the optical image formation area changes, deteriorating optical image capture accuracy
Solution Approach 1:
The space around the imager is divided into two distinct regions: a first space for optical image formation and a second space for heat dissipation. This segmentation allows heat to be removed from the imager while preventing the heated air from affecting the refractive index in the optical image formation area, thus resolving the contradiction between heat dissipation and optical accuracy
Solution Approach 2:
The harmful hot air that would normally rise and affect the optical path is extracted and redirected through a specific flow path that bypasses the optical image formation area. The flow path is designed to guide heat dissipation airflow away from the sensitive optical region, maintaining refractive index stability while achieving effective heat removal
2Measurement precision
If a curved imager is used to capture optical images, then image capture capability is improved, but heat dissipation becomes more challenging due to the compact structure
Solution Approach 1:
The design transitions from a conventional planar heat dissipation approach to a three-dimensional multi-space configuration. By creating multiple stacked spaces (first space for optics, second space for heat dissipation, third space for additional heat management), the patent achieves effective heat dissipation in a compact vertical arrangement while maintaining the curved imager's optical performance
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 design enhances capturing accuracy while ensuring efficient heat dissipation, improving both image quality and thermal management within the camera module.
Implementation Method 1
A heat dissipation fluid undergoes convection in the fluid space
Data Source
AI summary
A camera module is configured to capture an optical image of a target area and includes a lens member, an imager, a light transmitting member, and a seat. The lens member is configured to receive light from the target area. The imager has a curved portion convex in a direction away from the lens member and is configured to capture the optical image formed on the curved portion. The light transmitting member optically couples the lens member and the imager. The seat has a supporting portion that supports an outer rim of the imager and a fluid space defined inside the supporting portion. A heat dissipation fluid undergoes convection in the fluid space. The curved portion is interposed between the light transmitting member and the seat having the supporting portion and the fluid space.