Periscope Lens Module Gap Design for Mobile Terminal Imaging
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Solution Overview
Problem
Current mobile terminal designs with periscope lens modules face limitations in module height, which restricts the diameter of the first lens and subsequently affects the aperture value, leading to suboptimal imaging quality.
Innovation Solution
The proposed solution involves a periscope lens module with a motor housing and a lens structure that includes an enclosure with a first cylinder and a second cylinder, where at least one gap is cut into the sidewall of the first cylinder to increase the diameter of the first lens, thereby reducing the aperture value and enhancing imaging quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If the module height is reduced to make the mobile terminal light and thin, then the portability and aesthetic appearance are improved, but the diameter of the first lens is limited which results in a larger aperture value and degraded imaging quality
Solution Approach 1:
The patent transforms the optical path from a straight linear arrangement to a folded periscope structure, changing the spatial dimension of light propagation. By introducing reflective surfaces at angles, the optical path is bent to fit within a reduced height constraint while maintaining the necessary optical component diameters for quality imaging.
Solution Approach 2:
The patent implements a nested arrangement where multiple optical components (lenses, reflective surfaces) are stacked and integrated within the periscope housing. The first lens, second lens, and reflective surfaces are positioned in a compact nested configuration that maximizes space utilization while maintaining imaging quality.
2Manufacturing precision
If the diameter of the first lens is increased to reduce the aperture value, then the imaging quality is improved, but the module height increases which affects the thickness of the mobile terminal
Solution Approach 1:
The patent uses reflective surfaces to fold the optical path, allowing the first lens to have a larger diameter without increasing the vertical height of the module. The light path is redirected through angles created by the reflective surfaces, enabling lateral expansion of the lens while maintaining compact vertical dimensions.
3Manufacturing precision
If the aperture value is reduced to improve imaging quality, then the resolution and low-illumination capability are enhanced, but the diameter of the first lens must be increased which is constrained by the module height
Solution Approach 1:
The periscope structure with angled reflective surfaces enables the optical system to achieve a smaller aperture value by allowing a larger first lens diameter within the height constraint. The folded optical path creates additional spatial room for the lens to expand laterally without increasing the vertical profile.
Data Source
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AI summary
A periscope lens module of a mobile terminal and the mobile terminal are disclosed. The periscope lens module includes a motor housing (8) and a lens (3). The lens (3) includes an enclosure, a first lens (33), and a second lens. The enclosure includes a first cylinder (31) and a second cylinder (32) connected to the first cylinder (31), at least one gap (311) penetrating a sidewall of the first cylinder (31) is disposed on the sidewall, the first lens (33) is fastened in the first cylinder, and the second lens is fastened in the second cylinder (32). In the implementation solution, the at least one penetrating gap (311) is disposed on the sidewall of the first cylinder (31), and when the gap (311) is being formed, a part is cut from the arc sidewall of the first cylinder (31). When the lens module is disposed in the mobile terminal, a thickness dimension of the mobile terminal affects a diameter of the first lens (33). Therefore, when the lens module is being disposed, the gap (311) is made to face a rear housing of the mobile terminal, so that the diameter of the first lens (33) can be increased, thereby reducing an aperture value of the lens module and improving imaging quality.