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Angular aperture

Angular aperture is a tautogram (all words start with the same letter). View more tautograms!


The angular aperture of a lens is the apparent angle of the lens aperture as seen from the focal point: where is the focal length is the diameter of the aperture.

  • also known as 孔徑角

Printed dictionaries and other books with definitions for Angular aperture

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Google previewElectronic Materials (1991)

From Silicon to Organics by L. S. Miller, J. B. Mullin

A similar analysis for type II phase matching shows that with comparable parameters the angular aperture is a factor of 2 greater. So far in our treatment of phase matching we have considered only the wave normal direction of the waves in the ...

Google previewConfocal Microscopy and Multiphoton Excitation Microscopy (2006)

The Genesis of Live Cell Imaging by Barry R. Masters

Summary • Abbe made two theoretical breakthroughs: first, the influence of angular aperture is a result of the diffraction of light caused by the specimens, and second, the so-called Abbe sine condition. • Abbe defined the numerical ...

Google previewUnderstanding Microbes (1989)

A Laboratory Textbook for Microbiology by G. William Claus, David Balkwill

Figure 3-2 shows that higher-magnification lenses are designed to accept larger cones of light (have larger angular apertures) and thus have a higher NA. The angular aperture is a fixed property of the lens system that is determined during ...

Google previewASM Materials Engineering Dictionary (1992)

by Joseph R. Davis, ASM International

angular aperture. In optical microscopy, the angle between the most divergent rays that can pass through a ...

Google previewEncyclopedia of Optical Engineering: Pho-Z, pages 2049-3050 (2003)

by Ronald G. Driggers

For a given numerical aperture, the dry objective results in the best resolution, as then the angular aperture is greatest. For the same angular apertures, the oil- immersion objective gives the best resolution. Fig. 13 compares theoretical axial ...

Google previewDictionary of Physics (2016)

by Palgrave Macmillan Ltd

The angular aperture is linked to the numerical D-aperture A and the Prefractive index n of the material in front of the imaging system by the relationship A = n sin u. angular correlation, the mutual dependence of the directions of several decay ...

Google previewEncyclopedia and Handbook of Materials, Parts and Finishes, Third Edition (2016)

by Mel Schwartz

See also angular aperture. Aperture Size The opening of a mesh ...

Google previewEncyclopedia of Materials Characterization (1992)

Surfaces, Interfaces, Thin Films by C. R. Brundle, Charles A. Evans, Shaun Wilson

where n is the refractive index of the medium between the cover glass and the objective front lens, and AA is the angular aperture of the objective. The maximum ...

Google previewThe Encyclopaedia Britannica Or Dictionary of Arts, Sciences, and General Literature (1842)

No penetrating power or large angular aperture is requisite to bring out the lines on a micrometer, though divided nearly as finely as ordinary tests, to the extent perhaps of 10,000 in an inch.” These observations are just and philosophical, and ...

Google previewDictionary of Colloid and Surface Science (1989)

by Paul Becher

is the angular aperture (the angle between the most divergent rays which can pass through the lens to form the image). See resolving power. o oblate adj Flattened at the poles, as of spheroid 1 1 0 DICTIONARY OF COLLOID AND ...

Google previewModern Dictionary of Electronics (1999)

by Rudolf F. Graf

angular aperture—The largest angular extent of wave surface that an objective can transmit. angular deviation ...

Google previewAcademic Press Dictionary of Science and Technology (1992)

by Christopher G. Morris, Academic Press

angular aperture Optics, the breadth of the angle between the most widely separated rays that can pass through a lens to form an image. angular bitstock Mechanical Engineering ...

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