Wide-Angle Lens Assembly Compact Design Temperature Stability
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Solution Overview
Problem
Current wide-angle lens assemblies fail to simultaneously achieve miniaturization, a large field of view, high resolution, and resistance to environmental temperature variations while maintaining good optical performance.
Innovation Solution
A wide-angle lens assembly design comprising specific lenses with defined refractive powers and curvatures, including meniscus, biconvex, and biconcave lenses, arranged along an optical axis with a stop between certain lenses, and cemented lenses to optimize focal length, field of view, and temperature resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If the lens assembly is miniaturized to reduce total length, then the total lens length is shortened, but the field of view and resolution deteriorate
Solution Approach 1:
The lens assembly is divided into six individual lens elements (first lens L11, second lens L12, third lens L13, fourth lens L14, fifth lens L15, and sixth lens L16) arranged in sequence along the optical axis. Each lens element has specific refractive power and curvature characteristics that contribute to the overall optical performance, enabling the compact design to achieve both short total length and large field of view
Solution Approach 2:
The patent specifies precise parameter ranges for each lens element including refractive indices (Nd11=1.732, Nd12=1.656, Nd13=1.613, Nd14=1.834, Nd15=1.537, Nd16=1.917), Abbe numbers (Vd11=53.0, Vd12=40.3, Vd13=60.6, Vd14=25.1, Vd15=26.2, Vd16=64.2), and radius of curvature ratios (4≤R111/R112≤100, -100≤R161/R162≤0.1) to optimize the balance between compact size, field of view, and resolution
2Length of moving object
If the lens assembly is miniaturized to reduce total length, then the total lens length is shortened, but the resolution deteriorates
Solution Approach 1:
The lens assembly is divided into six individual lens elements (first lens L11, second lens L12, third lens L13, fourth lens L14, fifth lens L15, and sixth lens L16) arranged in sequence along the optical axis. Each lens element has specific refractive power and curvature characteristics that contribute to the overall optical performance, enabling the compact design to achieve both short total length and large field of view
Solution Approach 2:
The patent specifies precise parameter ranges for each lens element including refractive indices (Nd11=1.732, Nd12=1.656, Nd13=1.613, Nd14=1.834, Nd15=1.537, Nd16=1.917), Abbe numbers (Vd11=53.0, Vd12=40.3, Vd13=60.6, Vd14=25.1, Vd15=26.2, Vd16=64.2), and radius of curvature ratios (4≤R111/R112≤100, -100≤R161/R162≤0.1) to optimize the balance between compact size, field of view, and resolution
3Device complexity
If the lens structure is simplified to reduce complexity, then the device complexity is reduced, but the resistance to temperature variation deteriorates
Solution Approach 1:
The patent specifies precise parameter ranges for each lens element including refractive indices (Nd11=1.732, Nd12=1.656, Nd13=1.613, Nd14=1.834, Nd15=1.537, Nd16=1.917), Abbe numbers (Vd11=53.0, Vd12=40.3, Vd13=60.6, Vd14=25.1, Vd15=26.2, Vd16=64.2), and radius of curvature ratios (4≤R111/R112≤100, -100≤R161/R162≤0.1) to optimize the balance between compact size, field of view, and resolution
Solution Approach 2:
The lens assembly uses six different lens materials with distinct refractive indices and Abbe numbers, creating a composite optical system where each material is selected to contribute to temperature stability. The combination of materials with different thermal-optical properties compensates for temperature-induced focal length changes
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 a shortened total lens length, increased field of view, higher resolution, corrected aberrations, and resistance to environmental temperature variations, ensuring excellent optical performance as demonstrated by specific optical specifications and diagrams.
Implementation Method 1
The first lens L11 is a meniscus lens with negative refractive power... The second lens L12 is a meniscus lens with positive refractive power... The third lens L13 is a biconvex lens with positive refractive power... The fourth lens L14 is with refractive power... The fifth lens L15 is with refractive power... The sixth lens L16 is with negative refractive power... arranged in order from the object side to the image side along an optical axis
Data Source
AI summary
A wide-angle lens assembly comprises sequentially from an object side to an image side along an optical axis a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens. The first lens is a meniscus lens with negative refractive power. The second lens is a meniscus lens with positive refractive power. The third lens is a biconvex lens with positive refractive power. The fourth lens is with refractive power and includes a convex surface facing an object side. The fifth lens is with refractive power and includes a concave surface facing an image side. The sixth lens is with negative refractive power and includes a concave surface facing the object side.