Zobrazeno 1 - 10
of 16
pro vyhledávání: '"Steve C. Johnston"'
Publikováno v:
SPIE Proceedings.
Last year we presented the first experimental measurements of the dispersion in GRADIUMTM glasses. These measurements provided a glimpse into the materials properties that had previously been approximated. Unfortunately, although these valuable measu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b38808d153914180dfa0acc20100377a
https://doi.org/10.1117/12.323761
https://doi.org/10.1117/12.323761
Publikováno v:
Lens and Optical Systems Design.
We describe a novel method of determining potentially successful starting designs by utilizing an expert systems algorithm which operates on a database of previously well-designed optical systems. The database is composed of systems created by a `not
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::17e4c1f2f8365dfc8e823f50e4516b81
https://doi.org/10.1117/12.142877
https://doi.org/10.1117/12.142877
Publikováno v:
Stray Radiation in Optical Systems II.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fa0c406cc7078be05494605bb41add15
https://doi.org/10.1117/12.140692
https://doi.org/10.1117/12.140692
Autor:
Alan W. Greynolds, Steve C. Johnston
Publikováno v:
1990 Intl Lens Design Conf.
Using a versatile command line interface one ASAP module (RABET) can simulate virtually any optical effect in any imaginable 3D geometry. Another module (GALOP) is a less powerful but easier-to-use layout and optimization code with an entirely graphi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::98f45fc309c481634c641261877e1d87
https://doi.org/10.1117/12.47962
https://doi.org/10.1117/12.47962
Examples of the topographies of the wavefront-variance merit function at different aberration orders
Autor:
Steve C. Johnston
Publikováno v:
1990 Intl Lens Design Conf.
The wavefront variance merit function is constructed with aberration orders identified and partitioned. The partitioned merit function topographies of three optical systems are examined. 1. INTRODUCFION The study of the behavior of individual wavefro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c489dcdb83089565ccbd63d3cc49bf1d
https://doi.org/10.1117/12.47914
https://doi.org/10.1117/12.47914
Publikováno v:
Annual Meeting Optical Society of America.
Using a laser interferometric method described elsewhere,1 we report on isothermal dimensional stability of the following materials: Invar, Super Invar, Kovar, molybdenum, TZM, elkonite, Al2O3, Si3N4, SiC, copper, fused silica (quartz), TiAlV, Kovar/
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::798ac8635c5ed6d27a44ea9fecbb4ade
https://doi.org/10.1364/oam.1986.ws9
https://doi.org/10.1364/oam.1986.ws9
Publikováno v:
Annual Meeting Optical Society of America.
A laser interferometer was used to monitor thermally induced length changes in samples of Cer-Vit 101 and 142 between discrete temperatures in the 250–450 K range. The Cer-Vit 101 was then irradiated with a γ-ray 132Cs source for 37 days, and the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2ee8a706d9c84c93cd3d541f8497fc36
https://doi.org/10.1364/oam.1986.ws7
https://doi.org/10.1364/oam.1986.ws7
Autor:
Steve C. Johnston
Publikováno v:
1985 International Lens Design Conference.
Merit functions used in optical design are almost always extremely nonlinear in their behavior with respect to optical system parameters. This prevents the existing optimization algorithms from necessarily converging on the global minimum. They conve
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::90439b87d215b52d193238afdee6c3d1
https://doi.org/10.1117/12.949191
https://doi.org/10.1117/12.949191
Publikováno v:
Review of Scientific Instruments. 59:191-192
We report simultaneous excitation of at least 19 transverse modes of a curved‐plate, degenerate, Fabry–Perot resonator. The usefulness of spanning large free spectral ranges by means of transverse mode excitation is described.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::60ee2cf69465baba9502ce7bb5e31a32
https://doi.org/10.1063/1.1140009
https://doi.org/10.1063/1.1140009
Autor:
Stephen F. Jacobs, Steve C. Johnston
Publikováno v:
Applied Optics. 25:1878
Some problems caused by birefringence in dielectric mirrors are discussed with emphasis on the effects in laser cavities. Polarization sensitive applications are considered.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2a094af385e76b3e4ba1f175cc96aadb
https://doi.org/10.1364/ao.25.001878
https://doi.org/10.1364/ao.25.001878