Bending Optical Lens Assembly for Compact Telephoto Zoom
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Solution Overview
Problem
Compact mobile devices face challenges in miniaturizing high-magnification telephoto lens cameras while maintaining high-quality zoom images, as traditional long focal length telephoto lenses are difficult to miniaturize.
Innovation Solution
An optical lens assembly with a bending portion and multiple lenses, including a reflection surface and surfaces with refractive power, is designed to satisfy specific inequalities, allowing for a compact and thin telephoto lens system that achieves high magnification by synthesizing images from a wide lens system and a telephoto lens system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a long focal length telephoto lens is used to obtain high-magnification zoom image, then the magnification is improved, but the lens assembly size increases making miniaturization difficult
Solution Approach 1:
The patent introduces a bending portion that reflects light to change the optical path direction, effectively folding the optical path. This allows the optical system to achieve high magnification with a compact physical footprint by utilizing spatial dimension changes rather than simply extending the optical axis length
Solution Approach 2:
The patent arranges multiple lenses and the bending portion in a nested configuration where components are positioned within each other's spatial envelope. The lenses are arranged between the bending portion and image plane in a compact sequence, allowing the entire telephoto lens assembly to be miniaturized while maintaining the required optical path length for high magnification
2Length of stationary object
If the lens assembly is miniaturized to fit compact mobile devices, then the device size is reduced, but the ability to maintain high-quality zoom image deteriorates
Solution Approach 1:
The patent optimizes specific parameter ratios including Id/f (image height to focal length ratio between 0.06-0.2), TTL/f (total track length to focal length ratio ≤1.0), and ttla/ttlb (distance ratios around the bending portion ≤0.4). These parameter changes enable miniaturization while preserving zoom image quality through mathematically optimized optical geometry
Solution Approach 2:
The bending portion serves multiple functions: it folds the optical path to reduce size, maintains the required optical path length for high magnification, and positions components in a compact arrangement. This multi-functionality allows the compact lens assembly to achieve both miniaturization and high-quality zoom imaging
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 enables a compact, high-quality, high-magnification zoom image in mobile devices, providing a continuous optical zoom function and reducing the overall size of the lens assembly.
Implementation Method 1
a bending portion including a reflection surface for reflecting light
Implementation Method 2
at least one surface having refractive power, and a plurality of lenses arranged between the bending portion and an image plane
Data Source
AI summary
Provided are an optical lens assembly and an electronic apparatus including the same, according to various embodiments. The optical lens assembly includes a bending portion including a reflection surface for reflecting light and at least one surface having a refractive power, and a plurality of lenses arranged between the bending portion and an image plane. Other embodiments are possible.