光谱共焦三维形貌仪用超大色散线性物镜组设计

杨锐; 云宇; 解滨; 王安苏; 刘子维; 刘晨星

doi:10.11884/HPLPB201830.170521

光谱共焦三维形貌仪用超大色散线性物镜组设计

doi: 10.11884/HPLPB201830.170521

杨锐^1,,
云宇¹,
解滨^2, ,,
王安苏²,
刘子维²,
刘晨星¹

1.
中国久远高新技术装备公司, 北京 100094
2.
苏州大学物理与光电·能源学院, 江苏苏州 215006

详细信息

作者简介:
杨锐(1977－)，男，硕士，副研究员，从事光学工程技术研究；youngriver0023@sina.com

通讯作者:
解滨(1980－)，男，博士，副研究员，从事光学加工检测研究；xiebin@suda.edu.cn

中图分类号: TP212;O439
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- 被引次数: 0
出版历程
- 收稿日期: 2017-12-22
- 修回日期: 2018-02-11
- 刊出日期: 2018-05-15

Design of dispersive objective lens of large linear chromatic confocal 3D surface profiler

Yang Rui^1
,,
Yun Yu¹,
Xie Bin^{2
, ,},
Wang Ansu²,
Liu Ziwei²,
Liu Chenxing¹

1.
China Jiuyuan Hi-tech Equipment Corporation, Beijing 100094, China
2.
College of Physics, Optoelectronics and Energy, Soochow University, Suzhou 215006, China

摘要

摘要: 光谱共焦三维形貌仪具有精度高、测量范围大、适应性强等特点，其关键部件是产生轴向色散的物镜，色散物镜轴向色散与波长间的非线性会导致系统整体性能下降。分析了共焦法检测表面形貌的工作原理，以及产生线性轴向色散的条件，根据共焦光学系统的基本设计原理，在预设的设计指标及要求下，完成一个超大色散线性物镜组设计。该色散物镜组采用四级串联结构，在400~700 nm光谱范围内达到30 mm的色散范围，波长离焦量和波长之间线性度通过线性回归拟合得出判定系数为1，满足色散的线性度要求。
- 光谱共焦 /
- 色散物镜 /
- 表面测量 /
- 线性色散 /
- 光学设计
Abstract: Chromatic confocal 3D profiler has high precision, large measuring range and strong adaptability. The key component is the objective lens with axial dispersion. The nonlinear dispersion of axial dispersion and wavelength of the dispersion objective lens reduces the overall performance of theprofiler. In this paper, by analyzing the principle of confocal method to detect surface topography and the conditions for producing linear axial dispersion, the design indexes and requirements of confocal optical system are given, and a super-dispersive objective lens has been designed.The objective lens has four magnification structures in series dispersing the focus of wavelength between 400 and 700 nm to 30 mm longitudinal range. Through linear regression fitting of the defocusing amount and linearity of the wavelength, it is obtained that the coefficient of determination is 1, greatly improving the linearity of dispersion.
- chromatic confocal /
- dispersive objective lens /
- surface profile /
- linear dispersion /
- optical design

HTML全文

图 1 光谱共焦三维形貌仪工作原理示意图

Figure 1. Principle schematic of chromatic confocal 3D profilometer

下载: 全尺寸图片幻灯片

图 2 色散物镜结构图

Figure 2. Layout of optimized dispersive objective

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图 3 透镜轴向色差特性

Figure 3. Longitudinal aberrations of different wavelength

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图 4 400，500，600，700 nm聚焦位置处的点列图

Figure 4. Spot diagrams at 400, 500, 600, 700 nm focus positions

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图 5 物镜的色散聚焦位置与波长拟合直线

Figure 5. Relationship between chromatic focus shift and wavelength

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表 1 色散物镜结构参数

Table 1. Structure parameters of dispersive objective lens

radius of curvature/mm	thickness/mm	material	radius/mm
152	6.273 317	H-ZF72A	7.626 787
-181	5.791 638	H-ZK21	8.168 694
-27	14.145 228		8.629 423
22	5.683 613	H-ZLAF92	7.975 332
11	6.994 287	H-FK71	6.685 219
-50	104.400 962		6.464 555
73	6.901 395	H-FK71	8.668 252
-12	7.201 105	H-ZLAF92	8.820 381
-28	1.495 814		11.412 310
25	4.340 051	H-ZK21	12.668 725
153	4.005 912	H-ZF72A	12.488 838
infinity	98.394 688		12.075 799
211	3.970 081	H-ZF72A	12.356 620
-262	3.946 532	H-ZK21	12.645 284
-28	1.796 616		12.765 914
20	4.787 852	H-ZLAF92	11.400 054
11	6.999 160	H-FK71	8.985 674
-68	90.044 451		8.819 089
60	6.731 128	H-ZPKS	9.344 148
-11	5.331 079	H-ZLAF78B	9.402 357
-21	17.349 091		11.348 517
36	6.998 568	D-K59	10.712 105
12	4.354 659	H-LAF10LA	9.481 764
25	58.835 809		9.079 874

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