Five-Group Zoom Lens Assembly for Videoconferencing
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Solution Overview
Problem
Current videoconferencing systems lag behind consumer electronic devices in features and ease of use, often limited to 720p or 1080p video streams and requiring specialized setup and maintenance.
Innovation Solution
A compact zoom lens assembly with five lens groups, including aspherical elements, is designed for videoconferencing systems, allowing for high-resolution imagery and adjustable focal lengths to support 2k and 4k video while maintaining a small form factor and competitive cost.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a compact zoom lens assembly with five lens groups is used, then high-resolution imagery and adjustable focal lengths are achieved, but device complexity increases
Solution Approach 1:
The lens assembly is divided into five distinct lens groups (first through fifth lens groups) with specific focal length relationships, where each group contributes to the overall high-resolution imaging capability while allowing independent optimization of each segment's design and manufacturing
Solution Approach 2:
The lens assembly incorporates adjustable focal lengths through the coordinated movement of multiple lens groups, enabling dynamic zoom functionality that adapts to different imaging requirements while maintaining high resolution across the zoom range
2Adaptability or versatility
If adjustable focal lengths are implemented, then versatility is improved, but device complexity increases
Solution Approach 1:
The lens assembly enables continuous focal length adjustment by dynamically repositioning the five lens groups relative to each other, providing versatile zoom functionality that adapts to various videoconferencing scenarios from wide-angle to telephoto views
Solution Approach 2:
The lens assembly provides multiple functions within a single optical system, delivering both wide-angle and telephoto imaging capabilities, as well as high-resolution still and video capture, making it universally applicable to diverse videoconferencing requirements
3Manufacturing precision
If high-resolution imagery is achieved, then video quality is improved, but cost increases
Solution Approach 1:
Dividing the optical system into five lens groups allows each segment to be optimized and manufactured independently, enabling the use of cost-effective materials and manufacturing processes for each group while achieving high overall resolution through precise alignment and design
Solution Approach 2:
The lens assembly achieves high resolution by carefully controlling and optimizing specific parameters such as focal length relationships, element spacing, and curvature radii, allowing for precision imaging while using manufacturable design choices that balance performance and cost
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 solution provides high-quality imagery and adjustable focal lengths, enhancing videoconferencing systems' capabilities to match consumer electronic devices, improving usability and resolution without increasing size or cost.
Implementation Method 1
A lens assembly, from front to rear comprising: a first lens group of positive refractive power; a second lens group of negative refractive power; a third lens group of positive refractive power; a fourth lens group of positive refractive power; and a fifth lens group of positive refractive power
Data Source
AI summary
This disclosure describes a videoconferencing system that includes a lens housing having a longitudinal axis; a lens assembly disposed within the lens housing along the longitudinal axis and comprising from front to rear: first, second, third, fourth and fifth lens groups. The lens groups are aligned with and distributed along the longitudinal axis. The videoconferencing system also includes a first motor coupled to and configured to move the second lens group along the longitudinal axis between the first and third lens groups; and a second motor coupled to and configured to move the fourth lens group along the longitudinal axis between the third and fifth lens groups.