Nine-Lens Optical Imaging Assembly for Large Image Surface
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Solution Overview
Problem
The increasing demand for high-pixel mobile phone cameras requires an optical imaging lens assembly that can provide a large image surface while maintaining high machinability and imaging quality, which existing technologies have not adequately addressed.
Innovation Solution
The optical imaging lens assembly consists of nine lenses with specific refractive powers, surface types, and center thicknesses, along with controlled air spaces and focal lengths, to achieve a large image surface and improved imaging quality, while also facilitating batch production and machining stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the number of lenses is increased to improve imaging quality and image surface, then the device complexity increases
Solution Approach 1:
The optical system is divided into 9 distinct lens elements with specific refractive powers and configurations. Each lens is designed with specific parameters (curvature radii, thicknesses, refractive indices) to segment the optical function, achieving complex imaging performance through modular lens components that can be independently manufactured and assembled.
2Area of stationary object
If the image surface is enlarged to meet high-pixel requirements, then the manufacturing precision requirements increase
Solution Approach 1:
The patent optimizes specific parameters including the curvature radii of lens surfaces, center thicknesses of each lens, air space distances between lenses, and refractive indices of lens materials. By precisely controlling these parameters within defined ranges, the system achieves a large image surface while maintaining manufacturability through standardized parameter values that facilitate precision machining.
3Reliability
If multiple lenses with specific refractive powers are used to correct optical aberrations, then the device complexity increases
Solution Approach 1:
Each lens in the system is assigned specific local optical properties including particular refractive powers, curvature radii, and thicknesses tailored to correct specific optical aberrations. The lenses are configured with different refractive indices and surface curvatures to address different aberration types locally, achieving comprehensive optical correction through differentiated lens characteristics rather than a uniform design.
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 results in high imaging quality, reduced optical sensitivity, and enhanced machinability, making it suitable for portable electronic devices with improved production and assembly processes.
Implementation Method 1
a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, an eighth lens and a ninth lens with refractive power respectively
Data Source
AI summary
The disclosure discloses an optical imaging lens assembly, which sequentially includes, from an object side to an image side along an optical axis, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, an eighth lens and a ninth lens with refractive power respectively. There is an air space between any two adjacent lenses. The third lens has positive refractive power. An object-side surface of the fourth lens is a concave surface, while an image-side surface is a concave surface. ImgH is a half of a diagonal length of an effective pixel region on an imaging surface, T89 is a spacing distance of the eighth lens and the ninth lens on the optical axis, ImgH and T89 meet 6.0<ImgH/T89<7.0.