Six-Element Camera Lens with Glass and Plastic Materials
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Solution Overview
Problem
There is a need for ultra-thin wide-angle camera lenses with good optical characteristics and fully corrected chromatic aberration, particularly for handheld devices like smartphones and digital cameras, where the shrinking pixel size of photosensitive devices and increasing demand for better imaging quality require more complex lens structures.
Innovation Solution
A six-piece camera optical lens design is proposed, comprising lenses made of glass and plastic materials with specific refractive powers and curvature radii, optimized to achieve ultra-thin and wide-angle capabilities while correcting aberrations, with a total optical length of less than 5.67 mm and an aperture F number of less than 2.16, ensuring miniaturization and high imaging quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a three-piece or four-piece lens structure is adopted, then the device complexity is reduced, but the imaging quality and chromatic aberration correction are insufficient
Solution Approach 1:
The lens system is divided into six distinct lens elements with different refractive indices and curvatures, allowing independent optimization of each element's contribution to overall imaging quality and aberration correction
Solution Approach 2:
The lens combines glass and plastic materials with different refractive properties to achieve a balance between chromatic aberration correction and optical path length, creating a composite optical system that optimizes both imaging quality and device thickness
2Volume of moving object
If the pixel size of photosensitive devices is shrinking, then the device can be made smaller, but the imaging quality requirement becomes more stringent
Solution Approach 1:
The lens design optimizes parameters such as curvature radii, refractive indices, and thicknesses to achieve high imaging quality within a compact form factor, specifically designing for ultra-thin applications with total optical length under 5.67mm
Solution Approach 2:
The lens system compensates for the reduced pixel size by optimizing the optical path and aberration correction in multiple dimensions, achieving sharp imaging quality despite the smaller sensor area
3Manufacturing precision
If a five-piece, six-piece or seven-piece lens structure is adopted, then the imaging quality and chromatic aberration correction are improved, but the device complexity increases
Solution Approach 1:
Each lens element is designed to perform multiple functions simultaneously - correcting different types of aberrations, controlling optical path length, and optimizing for specific wavelength ranges, thereby achieving high performance with a manageable six-element structure
4Length of stationary object
If the total optical length is reduced to achieve ultra-thin design, then the device can be miniaturized, but the chromatic aberration correction becomes more difficult
Solution Approach 1:
The lens combines glass and plastic materials with different refractive properties to achieve a balance between chromatic aberration correction and optical path length, creating a composite optical system that optimizes both imaging quality and device thickness
Solution Approach 2:
Different regions of the lens system are optimized for different functions - certain elements are designed specifically for chromatic aberration correction while others optimize for optical path management, with each element having customized curvature and thickness parameters
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 design achieves ultra-thin and wide-angle capabilities with fully corrected on-axis and off-axis chromatic aberrations, maintaining excellent optical characteristics and miniaturization, suitable for handheld devices with improved imaging performance.
Implementation Method 1
A six-piece camera optical lens design is proposed, comprising lenses made of glass and plastic materials with specific refractive powers and curvature radii
Data Source
AI summary
The present disclosure discloses a camera optical lens. The camera optical lens including, in an order from an object side to an image side, a first lens, a second lens having a positive refractive power, a third lens having a negative refractive power, a fourth lens, a fifth lens, and a sixth lens. The first lens is made of glass material, the second lens is made of plastic material, the third lens is made of plastic material, the fourth lens is made of glass material, the fifth lens is made of plastic material, and the sixth lens is made of plastic material. The camera optical lens further satisfies specific conditions.