Vehicle Camera Module Cover Structure for Flare and Ghost Blocking
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Solution Overview
Problem
Camera modules in vehicles suffer from image quality defects such as flare and ghost due to light reflections caused by the structure of the camera, particularly when light emitted by light emitting components is reflected from non-transmissive materials and enters the lens, and gaps between components allow additional reflections to leak through.
Innovation Solution
A camera module design featuring a cover with a groove portion and a light blocking portion, where the groove portion is integrated into the front cover and the light blocking portion is positioned to surround the lens barrel, using non-transmissive materials to prevent light reflections from entering the lens, thereby enhancing image quality and reducing flare and ghost defects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a non-transmissive material cover is used to fix the lens and light emitting components, then the structural integrity and protection are improved, but light reflection occurs inside the camera causing flare and ghost defects
Solution Approach 1:
The cover is segmented into multiple functional portions: a front cover portion with a groove portion for light blocking, and a rear cover portion for structural support. The groove portion is further divided into a light blocking portion and a surface treatment portion, each serving specific functions to prevent light reflection while maintaining structural integrity.
Solution Approach 2:
Different portions of the cover have different optical properties: the groove portion uses non-transmissive material for light blocking, while the surface treatment portion uses a transmissive material with anti-reflective coating. This local differentiation allows the cover to simultaneously provide structural strength and prevent light reflection.
2Illumination intensity
If a plate made of transmissive material is installed on the exterior surface, then light transmission is improved, but gaps between components allow reflection to leak through
Solution Approach 1:
The groove portion and surface treatment portion are merged into a single integrated cover structure. The groove portion extends from the front surface toward the interior, and the surface treatment portion is formed on the groove portion, creating a unified component that combines light blocking and anti-reflective functions.
Solution Approach 2:
The groove portion acts as an intermediary structure between the external environment and the internal components. It provides a transition zone that blocks light from reaching reflective surfaces inside the camera, while the surface treatment portion on top maintains light transmission for normal camera operation.
3Ease of manufacture
If the cover structure is simplified to reduce manufacturing complexity, then ease of manufacture is improved, but the ability to prevent light reflection and maintain image quality deteriorates
Solution Approach 1:
The cover is designed as a multi-functional component that simultaneously provides: (1) structural protection for internal components, (2) light blocking through the groove portion, (3) anti-reflective properties through the surface treatment portion, and (4) light transmission for camera operation. This multi-functionality reduces the need for separate components while maintaining image 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
The camera module effectively prevents light reflections from affecting image quality, resulting in improved image capture and an integrated, compact design that minimizes external impacts and dust entry.
Implementation Method 1
a groove portion disposed around a region corresponding to the lens barrel in the optical axis direction... a light blocking portion in which a protrusion portion that is coupled to the groove portion is positioned
Data Source
AI summary
A camera module is provided. The camera module includes a cover including a front cover portion and having an accommodating space therein, a lens barrel disposed within the accommodating space, an image sensor disposed at a rear area of the lens barrel along an optical axis direction of the lens barrel within the accommodating space, and a light emitting portion disposed around the lens barrel, wherein the front cover portion is configured to have a groove portion disposed around the region corresponding to the lens barrel in the optical axis direction.