Zobrazeno 1 - 10
of 59
pro vyhledávání: '"Andrew E. Lowman"'
Autor:
Isaac Trumper, Hyemin Yoo, Matthew B. Dubin, Christian Davila-Peralta, Maham Aftab, Dae Wook Kim, Hyukmo Kang, Greg Smith, Henry Quach, Chang-Jin Oh, Justin Hyatt, Heejoo Choi, Andrew E. Lowman, Logan R. Graves
Publikováno v:
Optics and Photonics for Advanced Dimensional Metrology.
Reconfigurable freeform optical systems enable greatly enhanced imaging and focusing performance within nonsymmetric, compact, and ergonomic form factors. In this paper, several improvements are presented for the design, test, and data analysis with
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::25ab7a1446aa3e29a7662cbd1a04b110
https://doi.org/10.1117/12.2555650
https://doi.org/10.1117/12.2555650
Autor:
Isaac Trumper, Andrew E. Lowman, Logan R. Graves, Heejoo Choi, Chang Jin Oh, Dae Wook Kim, Maham Aftab, Brian Kellermeyer, Lei Huang
Publikováno v:
Optical Design and Fabrication 2019 (Freeform, OFT).
Utilizing freeform optics in an optical system improves the system’s overall performance and form-factor. These benefits come at a cost, both financial and technical, as freeform optics require advanced design, fabrication, and testing methods.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7bb97c4a9bd3f20307f2bfaf9e559dbe
https://doi.org/10.1364/freeform.2019.jw1a.6
https://doi.org/10.1364/freeform.2019.jw1a.6
Autor:
Henry Quach, Chang Jin Oh, Isaac Trumper, Christian Davila-Peralta, Greg Smith, Andrew E. Lowman, Dae Wook Kim, Heejoo Choi, Maham Aftab, Hyukmo Kang, Logan R. Graves, Hyemin Yoo, Justin Hyatt, Matt Dubin
Publikováno v:
Journal of Physics: Photonics. 3:022003
Reconfigurable freeform optical systems greatly enhance imaging performance within non-symmetric, compact, and ergonomic form factors. In this paper, several advances improve design, testing, and monitoring of these systems. Specific enhancements inc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::734159e8e5465192464f1c15b39e6f60
https://doi.org/10.1088/2515-7647/abde86
https://doi.org/10.1088/2515-7647/abde86
Publikováno v:
Optical Manufacturing and Testing XII.
The Scanning Long-wave Optical Test System (SLOTS) is a slope measuring deflectometry system that provides accurate measurements on ground surfaces. As it uses a thermal source, we can measure an optic during the grinding phase which allows us to cor
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::32d9ae9e059ab98da37fd6d1ab2be8bd
https://doi.org/10.1117/12.2321265
https://doi.org/10.1117/12.2321265
Publikováno v:
Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation III.
One of the major challenges of optical fabrication is measurement of the surface when first polished out, before its figure is within the capture range of interferometry. A high dynamic range instrument with good accuracy is needed to efficiently gui
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bddcdda2ad88e8802e9b7f4422efeb09
https://doi.org/10.1117/12.2313855
https://doi.org/10.1117/12.2313855
Autor:
Greg Smith, Andrew E. Lowman, Matthew B. Dubin, Thomas Connors, William Verts, Chang Jin Oh, Jamison Noenickx
Publikováno v:
Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation III.
The Optical Engineering and Fabrication Facility (OEFF) at the College of Optical Sciences, University of Arizona has successfully fabricated a 6.5m primary mirror and conducted integration and testing (I & T) of the primary mirror and telescope cell
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4996b77aaea4938a9c22ae41f09bef02
https://doi.org/10.1117/12.2314303
https://doi.org/10.1117/12.2314303
Publikováno v:
Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation III.
Large optic fabrication is a delicate and time consuming process. Obtaining a large prime optic is often in the critical path of a project and poses a serious risk to both the schedule and budget. The Optical Engineering and Fabrication Facility (OEF
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0e3efd52aa44cf1f0f93cb75a44e9add
https://doi.org/10.1117/12.2314350
https://doi.org/10.1117/12.2314350
Autor:
Hyukmo Kang, S. C. West, J. S. Kingsley, Dae Wook Kim, Isaac Trumper, Greg Smith, Heejoo Choi, Logan R. Graves, Andrew E. Lowman, Maham Aftab, Hubert M. Martin, Chang Jin Oh, M. T. Tuell
Publikováno v:
Scopus-Elsevier
The diverse design space of freeform and deformable optics allows the design of innovative optical system concepts. A manufacturing technology is the remaining piece that prevents full realization of a freeform and adaptable optics age.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ccbd4e350236646f2a30172d033de75f
https://doi.org/10.1364/freeform.2017.fth3b.6
https://doi.org/10.1364/freeform.2017.fth3b.6
Publikováno v:
SPIE Proceedings.
Several next generation astronomical telescopes or large optical systems utilize aspheric/freeform optics for creating a segmented optical system. Multiple mirrors can be combined to form a larger optical surface or used as a single surface to avoid
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5b4ea078fb4ff243e7a82f363378dbd0
https://doi.org/10.1117/12.2232237
https://doi.org/10.1117/12.2232237
Autor:
Chunyu Zhao, Eric Frater, Greg Smith, Chang Jin Oh, James H. Burge, Andrew E. Lowman, Matt Dubin
Publikováno v:
SPIE Proceedings.
Modern large telescopes such as TAO, LSST, TMT and EELT require 0.9m-4m monolithic convex secondary mirrors. The fabrication and testing of these large convex secondary mirrors of astronomical telescopes is getting challenging as the aperture of the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::28db8eab5b4bb8303284feb24516a62f
https://doi.org/10.1117/12.2233887
https://doi.org/10.1117/12.2233887