Results 151 to 160 of about 15,162 (160)

Self-reference dispersion correction for chromatic confocal displacement measurement

, 2021
Dispersion is a very common phenomenon in the broadband optical systems. Chromatic confocal technology uses the chromatic aberration of lens to decode the axial displacement of the sample surface by the focus-wavelength of the reflected spectrum ...
Bai Jiao, Xinghui Li, Xiaohao Wang, Jianjian Wang, K. Ni, Qian Zhou   +5 more
semanticscholar   +1 more source

A modified chromatic confocal system for spectral reflectance measurement

SPIE/COS Photonics Asia, 2021
Spectral reflectance plays an important role in the evaluation of the object surface, such as the color, the roughness. A new method is proposed to measure the spectral reflectance at a fixed incident angle.
Jiao Bai, Jingwen Li, Gaopeng Xue, Xiaohao Wang, Qian Zhou, Xinghui Li   +5 more
semanticscholar   +1 more source

Thickness measurement of radial GRIN lens based on chromatic confocal technology

Applied Optics and Photonics China, 2021
The chromatic confocal technology (CCT) has ultra-high distance measurement resolution and the characteristics of multi-surface tomography. It is merely widely used to measure the thickness of uniform materials currently.
Chun-yan Li, Geng-lan Li, Jihong Liu, Dou Luo, Jiayi Liu   +4 more
semanticscholar   +1 more source

Chromatic confocal microscopy with galvanometer scanning and CNN-based deconvolution for precise full-field surface profilometry

Optics and Photonics International Conference
This study presents a full-field chromatic confocal microscopy (CCM) system with galvanometer scanning and CNN-based deconvolution. A programmable liquid crystal on silicon (LCoS) replaces the spectrometer slit, enabling adaptive filtering.
W. Hung, C. Yen, Han-Ju Tsai, Feng Tse Chan, Liang-Chia Chen   +4 more
semanticscholar   +1 more source

Chromatic confocal displacement sensing at oblique incidence angles.

Applied Optics, 2020
A commercial chromatic confocal displacement sensor, designed for probing a target at normal incidence, is adapted to probe reflective targets at an oblique incidence angle.
G. Berkovic, S. Zilberman, E. Shafir, D. Rubin   +3 more
semanticscholar   +1 more source

Application of a chromatic confocal measurement system as new approach for in‐line wet film thickness determination in continuous oral film manufacturing processes

International journal of pharmaceutics, 2018
Graphical abstract Figure. No Caption available. ABSTRACT The key parameter of the oral film production process is the wet film thickness since it regulates the active pharmaceutical ingredient (API) content of the finished product.
S. Niese, J. Quodbach
semanticscholar   +1 more source

Novel chromatic confocal differential interference contrast prototype

Optical Metrology, 2019
By combining classic differential interference contrast (DIC) with the chromatic confocal principle, we show that phaseshifting calibration can be avoided in DIC by using spectral information induced by the investigated sample.
J. Belkner, Hsiu-Wen Liu, E. Manske, Liang-Chia Chen   +3 more
semanticscholar   +1 more source

Improving axial resolution of fiber chromatic confocal systems via 2D spectral demodulation.

Optics Letters
This study proposes a fiber chromatic confocal method with a 2D spectral demodulation to improve the axial resolution, which is achieved by the cross-dispersion of an echelle grating and prism.
Zhuang Sun, Xiangdong Huang, Guixin Tang, Xingchen Xie, Jiubin Tan   +4 more
semanticscholar   +1 more source

Non-contact on-machine measurement using a chromatic confocal probe for an ultra-precision turning machine

, 2017
Xicong Zou, Xuesen Zhao, Guo Li, Zengqiang Li, T. Sun   +4 more
semanticscholar   +1 more source

Profile Measurement by Using a Femtosecond Laser Chromatic Confocal Probe

2021
Ryo Sato, Yuki Shimizu, Hiraku Matsukuma   +2 more
exaly