Eight-Lens Optical System with Variable Aperture for Miniaturization
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Solution Overview
Problem
The challenge is to create an optical system that is miniaturized, provides good imaging effects, and has a variable aperture, while avoiding the increased volume that can result from variable apertures and multiple lenses.
Innovation Solution
The optical system consists of eight lenses with refractive power, including an adjustable aperture, and is designed such that the first lens has a positive refractive power with convex and concave surfaces, and subsequent lenses have specific refractive powers and surface shapes to correct aberrations and improve imaging quality, all while maintaining a compact design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If variable aperture and multiple lenses are used to improve imaging quality and adaptability, then imaging quality and adaptability are improved, but the volume of the optical system increases
Solution Approach 1:
The optical system is divided into eight separate lens elements with specific refractive powers and surface shapes. Each lens is designed to perform a specific function in the optical path, allowing the system to achieve variable aperture and multiple imaging modes while maintaining a compact overall structure through segmented design.
Solution Approach 2:
The patent employs lenses with specific refractive power parameters and surface shape parameters (convex/concave combinations) to optimize the optical path. By carefully selecting and adjusting these parameters for each of the eight lenses, the system achieves miniaturization while maintaining imaging quality and variable aperture functionality.
2Reliability
If multiple lenses with specific refractive powers are used to correct aberrations, then imaging quality is improved, but the complexity of the optical system increases
Solution Approach 1:
The optical system is divided into eight separate lens elements with specific refractive powers and surface shapes. Each lens is designed to perform a specific function in the optical path, allowing the system to achieve variable aperture and multiple imaging modes while maintaining a compact overall structure through segmented design.
Solution Approach 2:
The patent employs lenses with specific refractive power parameters and surface shape parameters (convex/concave combinations) to optimize the optical path. By carefully selecting and adjusting these parameters for each of the eight lenses, the system achieves miniaturization while maintaining imaging quality and variable aperture functionality.
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 system achieves a balanced performance with a controlled maximum field of view, improved imaging quality across the entire field of view, and a compact optical length, meeting the requirements of miniaturization and variable aperture functionality.
Implementation Method 1
The first lens has a positive refractive power, an object side surface of the first lens is convex near the optical axis, and an image side surface of the first lens is concave near optical axis
Data Source
AI summary
An optical system, a camera module, and an electronic device are disclosed. The optical system consists of eight lenses having refractive power. From an object side to the image side along an optical axis of the optical system, the optical system sequentially includes a first, third, fifth, and seventh lenses having a positive refractive power and a second, fourth, and eighth lenses having a negative refractive power. Object side surfaces of the first, second, third, fifth, sixth, and seventh lenses are all convex near the optical axis, and image side surfaces of the first, second, fourth, sixth, seventh, and eighth lenses and an object side surface of the eighth lens are all concave near the optical axis. By reasonable design of each lens of the optical system, the optical system meets requirements of miniaturization and has good imaging effect and characteristics of adjustable aperture.