Lens Module Bracket Arc Surface Reduces Flare Without Dark Edges
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Solution Overview
Problem
The existing lens modules suffer from flare issues due to light reflection from the non-photosensitive area to the inclined surface, which affects image quality, and current methods to mitigate this, such as blackening or reducing the through hole size, come with risks of dark edges or incomplete elimination.
Innovation Solution
The lens module design incorporates a supporting portion with an arc surface that reflects light entering the non-photosensitive area outside the sensor, reducing flare and the risk of dark edges, while maintaining image quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If the non-photosensitive area is blackened or matted to eliminate flare, then flare is reduced, but the risk of dark edges increases
Solution Approach 1:
The patent applies different surface treatments to different regions: the non-photosensitive area is blackened to absorb light, while the inclined surface is matted to diffuse reflection. This localized differentiation allows flare reduction without creating dark edges in the photosensitive area.
Solution Approach 2:
The patent introduces an arc surface (curved surface) in the light path to redirect stray light. The curved geometry reflects light at different angles, preventing concentrated reflections that would cause dark edges while still reducing flare.
2Object-generated harmful factors
If the through hole size is reduced to weaken flare, then flare is reduced, but the risk of dark edges occurs
Solution Approach 1:
Instead of uniformly reducing the through hole size, the patent applies selective surface treatments: blackening the non-photosensitive area and matting the inclined surface. This allows flare reduction through localized absorption and diffusion without restricting the overall light path, preventing dark edges.
3Object-generated harmful factors
If the non-photosensitive area is blackened to eliminate flare, then flare is reduced, but the width is narrow which increases difficulty
Solution Approach 1:
The patent introduces an arc surface that redirects light paths, effectively increasing the distance light travels through the non-photosensitive area. This curvature allows for more gradual and complete blackening coverage, making the manufacturing process more manageable despite the narrow width.
4Object-generated harmful factors
If the inclined surface is matted to eliminate flare, then flare is reduced, but incomplete matting may occur which obstructs the effect
Solution Approach 1:
The arc surface geometry extends the light path and distributes light reflection across a broader area. This makes the matting treatment more effective and uniform, as light interacts with the matte surface over a longer distance, ensuring complete flare elimination rather than partial reduction.
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 effectively minimizes flare and dark edges, enhancing the overall image quality of the lens module by strategically reflecting light outside the sensor, thus improving the module's performance.
Implementation Method 1
The supporting portion may include an inclined surface inclined toward the circuit board and facing the photosensitive chip. Light enters the photosensitive area to form an image. Light may also enter the non-photosensitive area and is reflected by the non-photosensitive area to the inclined surface. The inclined surface further reflects the light to the photosensitive area
Data Source
AI summary
A lens module reducing flare and having no dark edges includes a bracket and a sensor. The bracket includes a supporting portion, a first receiving groove, and a second receiving groove. The supporting portion is formed at a junction between the first receiving groove and the second receiving groove. The supporting portion comprises an arc surface. The sensor is received in the first receiving groove. The sensor includes a photosensitive area and a non-photosensitive area surrounding the photosensitive area. The arc surface faces the sensor. A center of a circle of the arc surface falls within the non-photosensitive area. Light reflected by the arc surface falls outside the sensor.