Camera Module Staircase Window Reduces Flare
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Solution Overview
Problem
Camera modules suffer from a flare phenomenon where outside light deviated from the view angle of the lens is reflected into the image sensor, causing a red pattern on captured images due to the perpendicular inner wall of the window in the base.
Innovation Solution
The camera module incorporates a window with a staircase unit, featuring lugs or an inclined inner lateral wall, which diffuses or redirects outside light away from the image sensor, preventing flare phenomena.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the inner wall of the window is formed perpendicularly, then the manufacturing process is simple, but outside light reflected from the inner wall enters the image sensor causing flare phenomenon
Solution Approach 1:
The patent applies asymmetry by changing the window inner wall from a perpendicular (symmetric) structure to an inclined structure. The inclined inner wall is formed at a specific angle (e.g., 45 degrees) relative to the optical axis, creating an asymmetric geometry that redirects reflected light away from the image sensor, thereby eliminating the flare phenomenon while remaining manufacturable through standard molding processes.
Solution Approach 2:
The patent introduces a new dimensional aspect by adding an inclined surface to the window inner wall. Instead of merely modifying the existing perpendicular wall, the solution creates a multi-dimensional structure where the inclined inner wall forms a new plane that changes the reflection angle of light, directing it toward the case inner wall and away from the image sensor.
2Device complexity
If the window inner wall is made perpendicular, then the structure is simple, but light reflection causes red pattern on captured images
Solution Approach 1:
The patent applies asymmetry by changing the window inner wall from a perpendicular (symmetric) structure to an inclined structure. The inclined inner wall is formed at a specific angle (e.g., 45 degrees) relative to the optical axis, creating an asymmetric geometry that redirects reflected light away from the image sensor, thereby eliminating the flare phenomenon while remaining manufacturable through standard molding processes.
3Object-affected harmful factors
If an inclined inner wall is formed at the window, then flare phenomenon is reduced, but the manufacturing process becomes more complex
Solution Approach 1:
The patent merges the window structure with the base structure, integrating the inclined inner wall directly into the base body. This combination allows the inclined surface to be formed as a single integrated component during molding, eliminating the need for separate parts or complex assembly processes, thereby reducing manufacturing complexity despite the inclined geometry.
Solution Approach 2:
The base structure serves multiple functions: it supports the case, forms the window opening, and incorporates the inclined inner wall for light redirection. By making the base a multi-functional component that integrates structural support and optical control features, the patent avoids adding separate components that would increase manufacturing complexity.
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 staircase unit or inclined surface effectively reduces the amount of outside light entering the image sensor, eliminating the red pattern flare phenomenon and improving image quality.
Implementation Method 1
an outside light (A) having passed the lens (31) and deviated from a view angle of the lens (31) is reflected from the inner wall of the window (65) to be inputted into the image sensor (80)
Implementation Method 2
The staircase unit or inclined surface effectively reduces the amount of outside light entering the image sensor
Data Source
AI summary
The present invention relates to a camera module, the module including a case embedded with a lens, a base supporting the case and formed with a window for passing an optical image emitted by the lens, the window being formed with a staircase unit, and a PCB (Printed Circuit Board) mounted with the base and an image sensor for converting the optical image to an electrical signal.