Optical Imaging Lens Assembly with Segmented Refractive Power
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Solution Overview
Problem
The market demand for advanced optical imaging lens assemblies, particularly for macro camera applications in electronic devices, requires improved imaging quality and versatility, which existing technologies have not adequately addressed in terms of refractive power configuration and F-number optimization for finite and infinite object distances.
Innovation Solution
The optical imaging lens assembly includes a sequence of lenses with specific refractive powers and F-number configurations, ensuring positive refractive power for the first lens and at least one subsequent lens, with optimized ratios for distances, focal lengths, and aperture sizes to enhance imaging quality and reduce lens size, while maintaining sufficient luminance and amplification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the first lens has positive refractive power and multiple subsequent lenses are added to improve imaging quality, then the imaging quality and versatility are improved, but the lens assembly size and complexity increase
Solution Approach 1:
The lens assembly is segmented into a first lens with positive refractive power and at least one subsequent lens, where each lens has specific refractive power characteristics. This segmentation allows optimization of imaging quality for different object distances (macro and infinity) while managing overall assembly complexity through functional division.
Solution Approach 2:
The patent applies parameter changes by optimizing the F-number configuration (Fno1>3.5 for finite object distance, Fno2≥1.0 for infinite object distance) and refractive power distribution across lenses. These parameter optimizations enable improved imaging quality without proportionally increasing assembly complexity.
2Manufacturing precision
If the F-number is optimized for both finite and infinite object distances, then imaging quality at different distances is improved, but the aperture configuration becomes more complex
Solution Approach 1:
The patent optimizes F-number parameters for two different object distance scenarios: Fno1>3.5 for finite object distance (macro imaging) and Fno2≥1.0 for infinite object distance. This parameter optimization enables improved imaging quality at both distances while the aperture configuration is managed through the specific lens arrangement and refractive power distribution.
3Illumination intensity
If multiple lenses with specific refractive powers are used to improve imaging quality, then luminous flux and amplification are enhanced, but the overall lens size increases
Solution Approach 1:
The patent optimizes the balance between luminous flux and lens assembly length by configuring the first lens with positive refractive power and subsequent lenses with specific refractive powers. The F-number optimization (Fno1>3.5, Fno2≥1.0) and spacing ratios (ΣAT/Td≤0.5, ΣCT/TTL≤0.5) enable enhanced luminous flux and amplification while controlling overall lens size.
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 improves imaging quality by ensuring sufficient luminous flux, reducing lens size, and achieving proper amplification, thereby enhancing the versatility and convenience of electronic devices for macro imaging and microscopic applications.
Implementation Method 1
a first lens having positive refractive power
Implementation Method 2
ensuring sufficient luminous flux
Data Source
AI summary
The present disclosure discloses an optical imaging lens assembly, and the optical imaging lens assembly includes, sequentially from an object side to an image side along an optical axis: a first lens having positive refractive power, and at least one subsequent lens having refractive power. An F-number Fno1 of the optical imaging lens assembly satisfies Fno1>3.5, where an object distance is finite, and an F-number Fno2 of the optical imaging lens assembly satisfies Fno2≥1.0, where the object distance is infinite.