Zobrazeno 1 - 10
of 76
pro vyhledávání: '"Sverker Hård"'
Autor:
Björn Löfving, Sverker Hård
Publikováno v:
Optics Communications. 174:81-90
A free-space optical switch concept that uses two binary phase modulating FLC SLMs is studied. The first SLM steers the input beams to output ports on the second SLM which redeflects the incident beams. The second SLM acts as an angle selective filte
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5751c7808232809e74175e20681ab22f
https://doi.org/10.1016/s0030-4018(99)00711-7
https://doi.org/10.1016/s0030-4018(99)00711-7
Publikováno v:
Applied optics. 33(13)
A laser flare meter, insensitive to corneal, lens, and eye background scattering and calibrated by measurements and theoretical modeling, is reported. Calibration measurements and theoretical calculations of light scattering from albumin solutions we
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3deec87af09e5d076ab9bc20f3e3bf5b
https://pubmed.ncbi.nlm.nih.gov/20885615
https://pubmed.ncbi.nlm.nih.gov/20885615
Publikováno v:
Applied optics. 33(7)
It is shown that multilevel SAL 110 resist kinoforms can be developed stepwise. Measurements of the kinoform diffraction pattern, performed between the development steps, permitted correct final developments to be made. No significant relief shape de
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0791f536b01cb8be70da1e1919edfed9
https://pubmed.ncbi.nlm.nih.gov/20862134
https://pubmed.ncbi.nlm.nih.gov/20862134
Publikováno v:
Applied optics. 31(13)
The resolution of diffractive, bifocal intraocular lenses was studied with regard to pupil displacement and diameter size through computer simulations, bench measurements and patient vision acuity measurements. Good agreement was obtained between the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::30028a7a57f8fc943ea293ca055b4a68
https://pubmed.ncbi.nlm.nih.gov/20720904
https://pubmed.ncbi.nlm.nih.gov/20720904
Autor:
Sverker Hård, Olle Nilsson
Publikováno v:
Applied optics. 18(17)
A laser heterodyne apparatus for measuring small angle scattering from streaming particles in gases and liquids has been developed. A diffraction grating is used to create the local oscillator light beam, which makes the apparatus simple and practica
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e610a7e3a94228704c897b36cc74efee
https://pubmed.ncbi.nlm.nih.gov/20212796
https://pubmed.ncbi.nlm.nih.gov/20212796
Autor:
Olle Nilsson, Sverker Hård
Publikováno v:
Applied optics. 17(23)
A laser heterodyne apparatus for roughness measurements of polished surfaces has been developed. A new principle for generation of the local-oscillator light beam is introduced. Important features of the apparatus are: very high sensitivity (R(a) val
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b90d844c3000902b06f6d3639ff6bcdc
https://pubmed.ncbi.nlm.nih.gov/20208618
https://pubmed.ncbi.nlm.nih.gov/20208618
Publikováno v:
Optometry and Vision Science. 69:532-537
Two methods used for evaluation of glare in patients with opacities of the ocular media are compared. One is a low contrast letter test and the other is a direct light scattering meter. Theoretical expressions for the measures obtained from the two d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a773995507a5282e1efec1bf6692a119
https://doi.org/10.1097/00006324-199207000-00004
https://doi.org/10.1097/00006324-199207000-00004
Autor:
Michael Larsson, Mohammad R. Taghizadeh, Mats Ekberg, Antti Vasara, Jari Turunen, Jan Westerholm, Sverker Hård
Publikováno v:
Optics Communications. 88:37-41
Two-dimensional multilevel grating array generators with regular M × N fan-out patterns are designed using both nonlinear optimization and an iterative phase retrieval algorithm. Ten-level designs with fan-out of 2×2, 4×4, 1×8, and 8×8, with des
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::df2a48a631a0926e74e2f84cb9755d24
https://doi.org/10.1016/0030-4018(92)90305-b
https://doi.org/10.1016/0030-4018(92)90305-b
Autor:
Arne Gustavsson, Jan Isberg, Mikael Bergkvist, Mats Ekberg, Anders Sunesson, Michael Larsson, Jörgen Bengtsson, Per Skytt, Sverker Hård, Hans Bernhoff
Publikováno v:
Scopus-Elsevier
High-power lasers can be used to induce ionization of gases and thereby enable rapid triggering of electrical discharge devices, potentially faster than any devices based on mechanical or solid-state switching. With diffractive optical elements (DOEs
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::36c1bbf151a05bc9756382ae3e8b5309
https://pubmed.ncbi.nlm.nih.gov/18357275
https://pubmed.ncbi.nlm.nih.gov/18357275
Autor:
Sverker Hård, Fredrik Nikolajeff, Mathias Johansson, Jörgen Bengtsson, Björn Löfving, Claus Heine
Publikováno v:
Applied optics. 39(26)
With the aim of reducing surface reflections and increasing the diffraction efficiency we investigated the superposition of subwavelength phase gratings onto blazed phase gratings. With direct-write electron-beam lithography bare blazed gratings and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::94766c213b09696605dab9548eb65422
https://pubmed.ncbi.nlm.nih.gov/18350077
https://pubmed.ncbi.nlm.nih.gov/18350077