概括
这项研究引入了一种自动对焦变焦成像系统,用于精确的光纤计量. 该系统准确地测量纤维参数,如直径和度,偏差最小.
科学领域:
- 光学工程是指光学工程.
- 计量学 计量学 计量学
- 显微镜的使用方法
背景情况:
- 精确测量光纤几何参数对于电信和传感至关重要.
- 现有的方法通常需要更换镜头或调整物体平面,使这一过程变得复杂.
- 需要开发一种多功能,高分辨率的成像系统,用于现场测量.
研究的目的:
- 设计和验证用于测量光纤几何参数的自动聚焦变焦成像系统.
- 提出和实施一种新的自动对焦算法,用于高效的光纤端面成像.
- 为了实现高分辨率,连续放大测量而不需要光学系统重新配置.
主要方法:
- 设计一个带有四个组件正组镜头的变焦成像系统,可连续放大10x-40x.
- 开发一个基于灰色差异的平方和的三个邻居的度评估操作员.
- 集成一个可变的步骤大小,基于值的登算法用于自动对焦控制.
- 使用传输近场方法进行非接触测量.
主要成果:
- 开发的系统实现了3.48μm的分辨率.
- 证明了对直径为400,310,220和125微米的光纤进行精确测量.
- 重复测量覆盖直径和度的最大偏差分别为0.02微米和0.01微米.
结论:
- 拟议的自动对焦变焦成像系统能够精确,高效,无接触测量光纤几何参数.
- 新的自动对焦算法和光学设计在各种放大度上提供了高精度和分辨率.
- 该系统为光纤计量应用提供了重大进展.
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