Dual Imaging Optical Systems With Sliding Lens Groups
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Solution Overview
Problem
Compact electronic devices face challenges in integrating optical devices due to limited space, necessitating reduced total length of imaging optical systems, which restricts lens movement and compromises image quality when adjusting the angle of view using digital zoom.
Innovation Solution
The electronic device incorporates a first and second imaging optical systems with sliding lens groups, allowing optical adjustment of the angle of view while maintaining high image quality by satisfying the conditional expression SSW/SST>2, where SSW denotes the size of the first image sensor and SST denotes the size of the second image sensor.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the total length of the imaging optical system is reduced to fit in a compact electronic device, then the device size is reduced and portability is improved, but the lens movement capability is restricted and image quality deteriorates when adjusting the angle of view
Solution Approach 1:
The imaging optical system is divided into multiple lens groups (first lens group, second lens group, third lens group) that can independently slide relative to each other along the optical axis. This segmentation allows each group to contribute differently to angle of view adjustment, enabling optical zoom functionality within a compact form factor without compromising image quality.
Solution Approach 2:
The patent introduces a sliding mechanism that moves lens groups along the optical axis direction, adding a dimensional degree of freedom for angle of view adjustment. This allows the system to achieve variable angle of view (optical zoom) without increasing the overall device volume, resolving the contradiction between compact size and image quality adjustment capability.
2Device complexity
If digital zoom is used to adjust the angle of view, then the device structure remains simple, but image quality deteriorates due to loss of resolution
Solution Approach 1:
The patent implements a dynamic optical system where lens groups can slide to different positions along the optical axis, enabling real-time adjustment of the angle of view through optical means. This dynamic mechanical adjustment provides true optical zoom capability, avoiding the quality loss associated with digital zoom while maintaining a relatively simple overall device structure.
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 configuration enables high-quality image capture with optically adjustable angles of view, reducing image quality deterioration and enhancing the versatility of compact devices.
Implementation Method 1
a reflective member, a first lens group, a second lens group, and a third lens group, wherein the first, second, and third lens groups are sequentially arranged from the reflective member to the second image sensor
Data Source
AI summary
An electronic device is provided. The electronic device includes a first imaging optical system including a first image sensor, and a second imaging optical system including a second image sensor, a reflective member, a first lens group, a second lens group, and a third lens group, the first, second, and third lens groups being sequentially arranged from the reflective member to the second image sensor, the second and third lens groups being configured to slide with respect to the first lens group, and the first and second imaging optical systems being configured to satisfy a conditional expression SSW/SST>2, where SSW denotes a size of the first image sensor and SST denotes a size of the second image sensor.