Zobrazeno 1 - 10
of 24
pro vyhledávání: '"Stephen Oxburgh"'
Publikováno v:
Journal of the Optical Society of America. A, Optics, image science, and vision. 37(2)
We recently introduced the edge-imaging condition, a necessary condition for all generalized lenses (glenses) [J. Opt. Soc. Am. A 33, 962 (2016)JOAOD60740-323210.1364/JOSAA.33.000962] in a ray-optical transformation-optics (RTO) device that share a c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7de2c1d2fe9950d8488f142e31e257eb
https://pubmed.ncbi.nlm.nih.gov/32118911
https://pubmed.ncbi.nlm.nih.gov/32118911
Publikováno v:
Journal of the Optical Society of America. A, Optics, image science, and vision. 37(1)
We discuss new effects related to relativistic aberration, which is the apparent distortion of objects moving at relativistic speeds relative to an idealized camera. Our analysis assumes that the camera lens is capable of stigmatic imaging of objects
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8540985de3813353bb443727212ba575
https://pubmed.ncbi.nlm.nih.gov/32118889
https://pubmed.ncbi.nlm.nih.gov/32118889
Autor:
Euan N. Cowie, Johannes Courtial, Chris D. White, Mateusz Grunwald, Tomáš Tyc, Stephen Oxburgh, Jakub Bělín
Previously [Courtial et al., Opt. Express 26, 17872 (2018)] we presented the theory of transformation optics (TO) with ideal lenses and demonstrated an example, an omnidirectional lens. Here we interpret this omnidirectional lens in two different par
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d1030d4432e7d010d615ad566cb5b866
https://eprints.gla.ac.uk/203315/1/203315.pdf
https://eprints.gla.ac.uk/203315/1/203315.pdf
Autor:
Tomáš Tyc, Johannes Courtial, Jakub Bělín, Stephen Oxburgh, Mateusz Grunwald, Euan N. Cowie, Chris D. White
Publikováno v:
Imaging and Applied Optics 2019 (COSI, IS, MATH, pcAOP).
We present a new type of cloak, the abyss cloak, a lens structure that maps interior physical-space position to the exterior. We show that two nested abyss cloaks can form a perfect invisibility cloak.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::55e0d17ff519413cefa0029e5966350f
https://doi.org/10.1364/cosi.2019.jth3d.4
https://doi.org/10.1364/cosi.2019.jth3d.4
Publikováno v:
Novel Optical Systems Design and Optimization XX.
We recently showed how to construct omni-directional ray-optical transformation-optics devices out of ideal thin lenses. These devices can be seen as theoretical generalisations of the paraxial, four-lens, “Rochester cloak”. Here we investigate t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8fe61575a19218591dc7866cc0b32746
https://doi.org/10.1117/12.2272990
https://doi.org/10.1117/12.2272990
Many of the properties of thick lenses can be understood by considering these as a combination of parallel ideal thin lenses that share a common optical axis. A similar analysis can also be applied to many other optical systems. Consequently, combina
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7febccafe0f3440f9c28b8b743894bef
https://eprints.gla.ac.uk/157640/1/157640.pdf
https://eprints.gla.ac.uk/157640/1/157640.pdf
Publikováno v:
Frontiers in Optics 2017.
We present a structure of ideal thin lenses that acts as an omnidirectional transformation-optics cloak and an omnidirectional lens. We present the design principles, and discuss experimental realisability and potential applications.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::15e3073ddf5487946d31aeaebfd282f8
https://doi.org/10.1364/fio.2017.jtu2a.45
https://doi.org/10.1364/fio.2017.jtu2a.45
Publikováno v:
Frontiers in Optics 2017.
We describe pairs of skew ideal thin lenses as a single thin lens with non-coinciding, non-parallel, principal planes. This description facilitates the understanding of structures of skew lenses such as the ideal-lens cloak.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3b8813f46c460277d0b9db3f9c26d013
https://doi.org/10.1364/fio.2017.jtu2a.44
https://doi.org/10.1364/fio.2017.jtu2a.44
Publikováno v:
Optics Communications. 313:119-122
We derive the law of generalised refraction for generalised confocal lenslet arrays, which are arrays of misaligned telescopes. We have implemented this law of refraction in TIM, a custom open-source ray tracer.
4 pages, 3 figures
4 pages, 3 figures
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6fa8a18a1c3191fd8134a8e6f3db909b
https://doi.org/10.1016/j.optcom.2013.10.017
https://doi.org/10.1016/j.optcom.2013.10.017
Autor:
Johannes Courtial, Ross MacSporran, Stephen Oxburgh, Martin Hendry, Ruaridh O’Donnell, Euan N. Cowie, Norman Gray
Publikováno v:
SPIE Proceedings.
In a photo taken with a camera moving at relativistic speed, the world appears distorted. That much has long been clear, but the details of the distortion were slow to emerge correctly. We recently added relativistic raytracing capability to our cust
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::89b72371eefee47a27029e53e252970b
https://doi.org/10.1117/12.2237850
https://doi.org/10.1117/12.2237850