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pro vyhledávání: '"P. H. Langenbeck"'
Autor:
P. H. Langenbeck
Publikováno v:
Applied optics. 9(9)
A vector representation of the formation of fringe profiles in a Fizeau (wedge) interferometer shows that, under certain conditions, off-axis illumination may lead to fringe sharpening. The incident angle is such that the beam is first reflected towa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::edaab5e0c34c03aea75e4c7c959af47f
https://pubmed.ncbi.nlm.nih.gov/20094196
https://pubmed.ncbi.nlm.nih.gov/20094196
Autor:
P. H. Langenbeck
Publikováno v:
Applied optics. 9(8)
The Lloyd moire interferometer was introduced in Appl. Opt.6, 1707 ( 1967), as a means of testing interferometrically a path across very large surfaces in oblique to grazing incidence. The width of the path is determined by the optics in use. For any
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c25741e0e5f40ecaa9f6b68d81ef337b
https://pubmed.ncbi.nlm.nih.gov/20094149
https://pubmed.ncbi.nlm.nih.gov/20094149
Autor:
Robert Crane, George N. Steinberg, P. H. Langenbeck, Harry D. Polster, Jose Pastor, Roderic M. Scott, Robert G. Pilston
Publikováno v:
Applied optics. 8(3)
This article is based on a series of talks presented by personnel of The Perkin-Elmer Corporation at a symposium held in September 1967 and thereafter brought up to date for inclusion in the APPLIED OPTICS feature discussing Interferometry vs Spectro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::537f498880824bc2f41c0691b6e496cd
https://pubmed.ncbi.nlm.nih.gov/20072256
https://pubmed.ncbi.nlm.nih.gov/20072256
Autor:
P. H. Langenbeck
Publikováno v:
Applied optics. 6(10)
Lloyd's mirror experiment is applied to testing flatness of large surfaces. Because of the grazing incidence, even rough surfaces provide the characteristic interference pattern. In the case of a perfectly flat surface, that pattern consists of narro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::767f5ba5f163eea9e0943cb5e3e3dd30
https://pubmed.ncbi.nlm.nih.gov/20062292
https://pubmed.ncbi.nlm.nih.gov/20062292
Autor:
P. H. Langenbeck
Publikováno v:
Applied Optics. 8:2029
Uniform tint in multiple beam interferometry is a most sensitive method for detecting angular displacement between two flat surfaces. But as the sample size decreases, results become less accurate. To achieve a uniform dark tint, which is more sensit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::772eb37617506dd8116b0cffb796f5ff
https://doi.org/10.1364/ao.8.002029
https://doi.org/10.1364/ao.8.002029
Autor:
P. H. Langenbeck
Publikováno v:
Applied Optics. 6:1425
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::29373112b8084dc1082029d9d382b515
https://doi.org/10.1364/ao.6.001425
https://doi.org/10.1364/ao.6.001425