Optical Imaging Lens Group with Iris Diaphragm for Miniaturization
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The challenge is to minimize the size of camera lenses while maintaining high image quality and field of view, as the increasing number of camera modules in smartphones hinders miniaturization and thinning trends.
Innovation Solution
An optical imaging lens group is designed with a specific configuration including seven lenses and an iris diaphragm, where each lens has a unique refractive power and surface curvature, and the iris diaphragm is positioned between the first and second lenses, allowing for variable apertures to balance image quality under different lighting conditions, thereby enabling miniaturization and high-quality imaging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If multiple camera modules are arranged in smartphones to achieve high-definition photography, then imaging quality is improved, but device volume increases which hinders miniaturization and thinning
Solution Approach 1:
The patent combines multiple camera functions (ultra-clear, wide-angle, telephoto) into a single integrated optical imaging lens group with seven lenses, eliminating the need for separate camera modules while maintaining high-definition photography capabilities across different modes
Solution Approach 2:
The optical imaging lens group is designed to perform multiple imaging functions (ultra-clear, wide-angle, telephoto) within a single system, allowing one device to replace multiple specialized camera modules through algorithmic coordination
2Manufacturing precision
If the number of camera modules is increased to achieve high-definition photography, then imaging quality is improved, but the terminal thickness increases
Solution Approach 1:
The patent merges multiple camera functions into a single thin optical lens group, reducing the thickness required for multiple separate camera modules while maintaining the ability to achieve high-definition photography through coordinated imaging algorithms
3Volume of moving object
If a compact lens design is implemented to achieve miniaturization, then device size is reduced, but image quality and field of view may be compromised
Solution Approach 1:
The patent employs aspheric surfaces on multiple lenses (first, second, third, fourth, fifth, sixth, and seventh lenses) to optimize light path control and reduce aberrations, enabling compact design while maintaining high image quality and field of view performance
Solution Approach 2:
The patent optimizes multiple optical parameters including focal lengths, curvature radii, and spacing distances between lenses to achieve the best balance between compact size and imaging quality, with specific ratios constrained to ensure performance
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 ensures stable image quality and brightness, reduces aberrations, and allows for a compact lens design by adjusting apertures, achieving a balance between miniaturization and imaging quality.
Implementation Method 1
the iris diaphragm is arranged between the first lens and the second lens, wherein Fno2 is an F-number when an object distance of the optical imaging lens group is 1000 mm, Fno1 is an F-number when the object distance of the optical imaging lens group is 7000 mm
Implementation Method 2
a first lens with a positive refractive power, and an image-side surface of the first lens is a concave surface; a second lens with a refractive power, and an image-side surface of the second lens is a concave surface
Data Source
AI summary
The disclosure provides an optical imaging lens group. The optical imaging lens group includes: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens and an iris diaphragm, the iris diaphragm is arranged between the first lens and the second lens. Wherein Fno2 is an F-number when an object distance of the optical imaging lens group is 1000 mm, Fno1 is an F-number when the object distance of the optical imaging lens group is 7000 mm, and Fno2 and Fno1 satisfy: 1.3<Fno2/Fno1<1.8; ImgH is a half of a diagonal length of an effective pixel region on an imaging surface of the optical imaging lens group, FOV is a maximum field of view of the optical imaging lens group, and ImgH and FOV satisfy: 4.5<ImgH*tan(FOV/2)<5.5.