Periscope Camera Module Layout for Thin Design and Flare Control
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Solution Overview
Problem
The challenge of miniaturizing camera modules in portable electronic devices is hindered by the increase in thickness due to multiple lenses, and reducing lens diameter leads to flare issues from internal light reflection.
Innovation Solution
A camera module design with lenses oriented perpendicular to the device thickness, incorporating light shielding plates with protrusions and surface treatments to scatter light, and housing features to prevent flare.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple lenses are disposed in the thickness direction of the portable electronic device, then the optical performance is improved, but the thickness of the portable electronic device increases
Solution Approach 1:
The patent reorients the arrangement of multiple lenses from the thickness direction (vertical stacking) to the lateral direction (horizontal arrangement). This dimensional change allows multiple lenses to be disposed side-by-side within the same thickness plane, thereby maintaining thin device profile while preserving the ability to implement multiple lens functions for improved optical performance.
Solution Approach 2:
The patent employs movable light shielding plates that can dynamically adjust their positions and configurations. These light shielding plates include protrusions that can move to different locations to block or allow light paths, enabling flexible control of light reflection and flare prevention while maintaining a compact overall structure.
2Length of stationary object
If the diameter of the lens is reduced to thin the camera module, then the device thickness is reduced, but flare occurs due to light reflection inside the camera module
Solution Approach 1:
The patent introduces light shielding plates as intermediary elements positioned between the lenses and the image sensor. These plates include protrusions that strategically block light paths responsible for internal reflection and flare. The light shielding plates act as mediators that prevent harmful light reflections without requiring reduction of lens diameter, thus maintaining both thin profile and optical quality.
Solution Approach 2:
The light shielding plates feature protrusions with specific local geometries positioned at precise locations within the camera module. These localized structural modifications target specific light reflection paths without affecting the overall lens design or requiring diameter reduction. The local quality changes in the light shielding plates effectively prevent flare while maintaining the desired thin camera module thickness.
3Length of stationary object
If lenses are disposed in the length or width direction, then the thickness is not affected, but the diameter of the lens limits the thickness reduction capability
Solution Approach 1:
The patent utilizes the lateral dimension (length or width direction) for arranging multiple lenses side-by-side, freeing up the thickness dimension for other components. This dimensional redistribution allows the device to achieve reduced thickness not by shrinking lens diameter, but by optimizing the spatial arrangement across different dimensions, thereby decoupling lens diameter constraints from thickness reduction goals.
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
Achieves reduced device thickness and prevents flare by effectively managing light reflection, allowing for miniaturization without compromising optical performance.
Implementation Method 1
At least one surface of the first light shielding plate may be surface-treated to scatter light
Implementation Method 2
Each of the protrusions may include a convex curved surface
Data Source
AI summary
A camera module includes: a lens module including a plurality of lenses; a housing accommodating the lens module; a reflective member disposed in front of the lens module; an image sensor module to receive light passing through the lens module; and a first light shielding plate disposed in the housing in a space between the lens module and the image sensor module.