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geometrical optics, a focus, also called an image point, is a point where light rays originating from a point on the object converge. Although the focus is conceptually... |
packaging Epileptic focus in epilepsy Focus (earthquake), an earthquake's underground point of origin or hypocenter Focus (optics), a point toward which... |
Optics is the branch of physics that studies the behaviour and properties of light, including its interactions with matter and the construction of instruments... |
X-ray optics is the branch of optics that manipulates X-rays instead of visible light. It deals with focusing and other ways of manipulating the X-ray... |
only fully valid in geometrical optics, not in Gaussian beam optics or in wave optics, where the wavefront at the focus is wavelength-dependent and the... |
point in Wiktionary, the free dictionary. Focal point may refer to: Focus (optics) Focus (geometry) Conjugate points, also called focal points Focal point... |
photo-polymerization. Filament propagation Cumberbatch, E. (1970). "Self-focusing in Non-linear Optics". IMA Journal of Applied Mathematics. 6 (3): 250–62. doi:10... |
SPIE (redirect from International Society for Optics and Photonics) Engineers) is an international not-for-profit professional society for optics and photonics technology, founded in 1955. It organizes technical conferences... |
In optics, a caustic or caustic network is the envelope of light rays which have been reflected or refracted by a curved surface or object, or the projection... |
In optics, a diaphragm is a thin opaque structure with an opening (aperture) at its center. The role of the diaphragm is to stop the passage of light,... |
X-ray telescope (section Optics) rockets, and satellites. The basic elements of the telescope are the optics (focusing or collimating), that collects the radiation entering the telescope... |
is a small circular hole, as could be made with the point of a pin. In optics, pinholes with diameter between a few micrometers and a hundred micrometers... |
Geometrical optics, or ray optics, is a model of optics that describes light propagation in terms of rays. The ray in geometrical optics is an abstraction... |
Adaptive optics (AO) is a technique of precisely deforming a mirror in order to compensate for light distortion. It is used in astronomical telescopes... |
In optics and photography, infinity focus is the state where a lens or other optical system forms an image of an object an infinite distance away. This... |
Depth of focus is a lens optics concept that measures the tolerance of placement of the image plane (the film plane in a camera) in relation to the lens... |
Nonlinear optics (NLO) is the branch of optics that describes the behaviour of light in nonlinear media, that is, media in which the polarization density... |
optical waveguides can be described using the concepts of geometrical or ray optics, as illustrated in the diagram. Light passing into a medium with higher... |
The angle of incidence, in geometric optics, is the angle between a ray incident on a surface and the line perpendicular (at 90 degree angle) to the surface... |
Chromatic aberration (category Geometrical optics) In optics, chromatic aberration (CA), also called chromatic distortion and spherochromatism, is a failure of a lens to focus all colors to the same point... |