Six-Lens Optical Imaging Assembly with Stray-Light Spacing
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Solution Overview
Problem
Conventional optical imaging systems in mobile devices struggle to meet the demands of advanced photography, as they are limited by pixel size and framing, which cannot accommodate the increasing requirements of modern imaging applications.
Innovation Solution
An optical imaging lens assembly is designed with a specific configuration of six lenses, including a first lens with negative refractive power and a sixth lens with positive refractive power, along with spacing elements to optimize light path and reduce stray light, while satisfying conditional expressions for lens parameters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional optical imaging systems are used, then device complexity is low, but field-of-view and light gathering capabilities are insufficient
Solution Approach 1:
The optical system is divided into six separate lens elements (first lens through sixth lens) with different refractive powers and surface characteristics. Each lens segment is optimized for specific optical functions, allowing the system to achieve enhanced field-of-view and light gathering capabilities while maintaining manageable complexity through modular design
Solution Approach 2:
The lens assembly is designed to perform multiple optical functions simultaneously: the first lens with negative refractive power provides field expansion, while subsequent lenses with positive refractive power handle light gathering and focusing. The spacing elements serve multiple purposes including maintaining proper distances and reducing stray light, making the system universally applicable to various imaging requirements
2Manufacturing precision
If more lenses are added to enhance imaging quality, then imaging quality improves, but stray light increases
Solution Approach 1:
Spacing elements are introduced as intermediary components between adjacent lenses. These spacing elements serve as mediators that maintain proper optical distances while simultaneously blocking stray light paths. The first spacing element between the first and second lenses, and the second spacing element between the second and third lenses, effectively prevent stray light from reaching the image sensor while preserving the beneficial optical interaction between lenses
Solution Approach 2:
Different regions of the optical system are optimized with different properties: the first lens uses negative refractive power with specific surface curvatures to expand field-of-view, while subsequent lenses use positive refractive power for light gathering. The spacing elements are strategically positioned to provide stray light blocking only where needed, creating local quality variations that address specific optical challenges
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 proposed lens assembly enhances the field-of-view and light gathering capabilities, effectively reducing stray light and improving imaging quality, thus addressing the limitations of conventional systems.
Implementation Method 1
the first lens has a negative refractive power, an object-side surface of the first lens is a convex surface, and an image-side surface of the first lens is a concave surface; the second lens has a positive refractive power
Data Source
AI summary
The present disclosure discloses an optical imaging lens assembly, including a lens barrel and a lens group and a spacing element. The lens group includes first to sixth lenses; the first lens has a negative refractive power, a convex object-side surface, and a concave image-side surface; the second lens has a positive refractive power, a convex object-side surface, and a concave image-side surface; the third lens has a positive refractive power, a convex object-side surface, and a convex image-side surface; the fourth lens has a positive refractive power, a convex object-side surface, and a convex image-side surface; the fifth lens has a negative refractive power, and a concave object-side surface; and the sixth lens has a positive refractive power, and a convex object-side surface. There is a first spacing element in direct contact with the image-side surface of the first lens between the first lens and the second lens.