Zobrazeno 1 - 10
of 172
pro vyhledávání: '"Joseph M. Geary"'
Publikováno v:
International Journal of Optics, Vol 2010 (2010)
We present a remote, differential method for measuring the prescription of aspheric mirrors using null interferometry in the center-of-curvature configuration. The method requires no equipment beyond that used in a basic interferometery setup (i.e.,
Externí odkaz:
https://doaj.org/article/b0e744e2f61d441b9cde3c9f1d3a8a74
Publikováno v:
Optics express. 21(7)
This paper presents an analytical method that allows for unambiguous separation of misalignment from the interferometric measurement of cylindrical optics with rectangular apertures. This method not only removes the misalignment-induced aberration fr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c3ab5e53592b426c1d8d9ea8e5bcf3d8
https://pubmed.ncbi.nlm.nih.gov/23571975
https://pubmed.ncbi.nlm.nih.gov/23571975
Autor:
Joseph M. Geary
Since this book is about wavefront sensors it is appropriate to understand and define the subject of the measurement, i.e., the wavefront. Although the concept is simple, understanding it is not! This chapter examines the conceptual framework that su
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a1621808ce9c7d39ed987a08ee902abd
https://doi.org/10.1117/3.179559.ch1
https://doi.org/10.1117/3.179559.ch1
Autor:
Joseph M. Geary
Wavefront sensors serve two primary functions. The first, as a beam diagnostic, was explored in preceding chapters. The second, as a means of controlling adaptive optics, will be taken up here. Adaptive optics cover a wide range of applications. They
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c0d276b491b9aeecc561ebfd486b33f5
https://doi.org/10.1117/3.179559.ch9
https://doi.org/10.1117/3.179559.ch9
Autor:
Joseph M. Geary
In the last chapter we made measurements on the image to determined aberration magnitude. In this chapter we will make measurements in the exit pupil plane. The principal means for doing this will be interferometry. We will first consider how aberrat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ae441c3dd93382a584704055477cfd5b
https://doi.org/10.1117/3.147225.ch3
https://doi.org/10.1117/3.147225.ch3
Autor:
Joseph M. Geary
Light has several intrinsic properties that can be measured: phase, intensity, color, coherence, and polarization. Each can be measured at a point or as a function of position. Light also exhibits directionality (pointing). All properties can evolve
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0b014386eed0b33bc93216f8b5f50f1e
https://doi.org/10.1117/3.147225.ch5
https://doi.org/10.1117/3.147225.ch5
Autor:
Joseph M. Geary
In this chapter we examine methods used in testing imaging systems, e.g., a multi-element photographic objective. We will consider a specific scenario. Suppose we are given the prototype aerial reconnaissance lens shown in Fig. 1.1. Our job is to run
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6e58071127d80cc8fca7e9920cbdebb9
https://doi.org/10.1117/3.147225.ch1
https://doi.org/10.1117/3.147225.ch1
Autor:
Joseph M. Geary
Wavefronts cannot be perceived because it is light intensity rather than phase that interacts directly with matter. Detectors such as our eye respond to brightness levels, not differences in optical path length. Detectors in wavefront sensors also re
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::59d9b346ad9235503d654e00810480e4
https://doi.org/10.1117/3.179559.ch2
https://doi.org/10.1117/3.179559.ch2
Autor:
Joseph M. Geary
An engineer or scientist who will be using a wavefront sensor in their work will naturally want to know how good it is. Is it accurate, or repeatably inaccurate? Does it meet specifications? If not, is the machine bad, or were the specifications unre
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d7b92cff92842fc782a310344d0c43dc
https://doi.org/10.1117/3.179559.ch7
https://doi.org/10.1117/3.179559.ch7