Three-Lens Camera System with Aspheric Meniscus Elements
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Solution Overview
Problem
There is a need for high-resolution, compact camera lenses that can fit within thin devices, such as smartphones and tablets, which require lenses that can provide high-quality images in limited space.
Innovation Solution
An optical imaging lens assembly comprising three lens components with positive refractive power, where the first lens has a plano object side surface and the second and third lenses have a meniscus form, all with the same index of refraction and Abbe number, allowing for a compact design suitable for small form factor cameras.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If a compact lens design is used to reduce device thickness, then device height is reduced, but image quality may deteriorate
Solution Approach 1:
The lens system is divided into three distinct lens components (first, second, and third lens components) with different structural configurations. The first lens component has a plano object side surface, while the second and third lens components have meniscus forms. This segmentation allows each component to contribute differently to light refraction, enabling compact overall length while maintaining sufficient optical path for high-quality image formation.
Solution Approach 2:
The patent employs aspheric surfaces on the refracting surfaces of the lens components. Specifically, the object side surface of the first lens component is plano, while the image side surface and other refracting surfaces utilize aspheric curvatures. This curvature design enables better control of light rays within a shorter optical path, achieving both compact size and high image quality by reducing spherical aberration and improving focus precision.
2Manufacturing precision
If multiple lens components are used to improve image quality, then image quality is improved, but device complexity increases
Solution Approach 1:
The patent specifies precise parameter relationships among the three lens components to optimize performance while managing complexity. All three lens components use the same index of refraction and Abbe number, which simplifies material selection and manufacturing. The refractive powers and focal lengths of the components are carefully balanced, with the first lens component having positive refractive power and the second and third components configured with meniscus forms to achieve overall optical optimization without excessive complexity.
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 lens assembly enables the creation of compact, high-resolution camera systems suitable for small devices, reducing device height while maintaining image quality and allowing for adjustable focus mechanisms, suitable for various camera applications including still and video capture.
Implementation Method 1
An optical imaging lens assembly having three lens components is disclosed. All lens components may have positive refractive power.
Data Source
AI summary
An optical imaging lens assembly that may have three lens components. All lens components may have positive refractive power. The first object side lens component has a plano object side surface. The remaining refracting surfaces may be aspheric. The second and third lens components may have a meniscus form. All three lens components may have the same index of refraction and Abbe number.