Zobrazeno 1 - 10
of 19
pro vyhledávání: '"Tianquan Su"'
Publikováno v:
Optical Manufacturing and Testing XII.
Deflectometry is a metrology method able to measure large surface slope ranges that can achieve surface reconstruction accuracy similar to interferometry, making it ideal for freeform metrology. While it is a non-null method, deflectometry previously
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9543bf88003ba6285d8e47e1a14ccd2a
https://doi.org/10.1117/12.2320745
https://doi.org/10.1117/12.2320745
Model-free deflectometry for freeform optics measurement using an iterative reconstruction technique
Autor:
Wenchuan Zhao, Heejoo Choi, Logan R. Graves, Chang J.I.N. Oh, Tianquan Su, Dae Wook Kim, Peng Su
Publikováno v:
Optics letters. 43(9)
We present a novel model-free iterative data-processing approach that improves surface reconstruction accuracy for deflectometry tests of unknown surfaces. This new processing method iteratively reconstructs the surface, leading to reduced error in t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4fc851b25cc98b8ec9e622280d2581cb
https://pubmed.ncbi.nlm.nih.gov/29714758
https://pubmed.ncbi.nlm.nih.gov/29714758
Fabrication and testing of 4.2m off-axis aspheric primary mirror of Daniel K. Inouye Solar Telescope
Autor:
Greg Smith, James H. Burge, Run Huang, Ping Zhou, Peng Su, Daewook Kim, Chunyu Zhao, Andrew E. Lowman, Tianquan Su, Chang Jin Oh
Publikováno v:
SPIE Proceedings.
Daniel K. Inouye Solar Telescope (formerly known as Advanced Technology Solar Telescope) will be the largest optical solar telescope ever built to provide greatly improved image, spatial and spectral resolution and to collect sufficient light flux of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e3c85e7074122f0544e1dd592166b3a6
https://doi.org/10.1117/12.2229324
https://doi.org/10.1117/12.2229324
Publikováno v:
SPIE Newsroom.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::63101197b5151231be0040abe3e2e2e0
https://doi.org/10.1117/2.1201506.006015
https://doi.org/10.1117/2.1201506.006015
Publikováno v:
Applied optics. 54(10)
Slope measuring deflectometry (SMD) systems are developing rapidly in testing freeform optics. They measure the surface slope using a camera and an incoherent source. The principle of the test is mainly discussed in geometric optic domain. The system
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b8dd34692d7a7ec1070f41d5511cf813
https://pubmed.ncbi.nlm.nih.gov/25967213
https://pubmed.ncbi.nlm.nih.gov/25967213
Publikováno v:
Optical System Alignment, Tolerancing, and Verification VIII.
Low order aberration was founded when focused Gaussian beam imaging at Kodak KAI -16000 image detector, which is integrated with lenslet array. Effect of focused Gaussian beam and numerical simulation calculation of the aberration were presented in t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8b9406f4788d7ae751ec40dc483b3af2
https://doi.org/10.1117/12.2060476
https://doi.org/10.1117/12.2060476
Publikováno v:
Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation.
Large telescope mirrors are typically measured using interferometry, which can achieve measurement accuracy of a few nanometers. However, applications of interferometry can be limited by small dynamic range, sensitivity to environment, and high cost.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::112bd02950940e5b2be200b1102f01b4
https://doi.org/10.1117/12.2057726
https://doi.org/10.1117/12.2057726
Publikováno v:
Classical Optics 2014.
The camera lens effects for deflectometry surface measurements are analyzed. The evaluations of aberration induced errors are based on image simulation. Experiments for verification are undergoing.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::348cb2ca92b3e3303950f6a0aa5934ec
https://doi.org/10.1364/cosi.2014.jtu5a.7
https://doi.org/10.1364/cosi.2014.jtu5a.7
Publikováno v:
SPIE Proceedings.
ITF is usually over looked during the deflectometry measurements, especially when low spatial frequency errors are the main test focus. However, real data shows that the effect of ITF cannot be ignored to reach high accuracy measurements of high spat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::940865934519cd94dd11a92e076987d6
https://doi.org/10.1117/12.2037040
https://doi.org/10.1117/12.2037040
Publikováno v:
Applied optics. 52(29)
Current metrology tools have limitations when measuring rough aspherical surfaces with 1–2 μm root mean square roughness; thus, the surface cannot be shaped accurately by grinding. To improve the accuracy of grinding, the scanning long-wave optica
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::008a24f647397a9d89746d2016be566b
https://pubmed.ncbi.nlm.nih.gov/24217728
https://pubmed.ncbi.nlm.nih.gov/24217728