airy disc造句

• This appears like an atmospheric Airy disc but is not actually an Airy disk.
• The Airy Disc was clearly seen and he made many critical observations and fine drawings.
• The results below are based on mathematical models of Airy discs, which assumes an adequate level of contrast.
• The Airy disc function falls off very quickly but has very wide tails ( actually, infinitely wide tails ).
• The separation is 3.5 & Prime; and the diameter of the Airy disc 1.5 & Prime;
• The quadratic lens, an on-axis point source in the object plane produces an Airy disc PSF in the image plane.
• Therefore, the converging ( " partial " ) spherical wave shown in the figure above produces an Airy disc in the image plane.
• The factor 1.220 is derived from a calculation of the position of the first dark circular ring surrounding the central Airy disc of the diffraction pattern.
• In the centre of the mask there is a hole about the size of the Airy disc and the beam is focused onto this hole with a Fourier transforming lens.
• In confocal laser-scanned microscopes, the full-width half half-maximum ( FWHM ) of the point spread function is often used to avoid the difficulty of measuring the Airy disc.
• The argument of the Airy function is important, because this determines the " scaling " of the Airy disc ( in other words, how big the disc is in the image plane ).
• A more appropriate analogue to the one-dimensional sinc is the two-dimensional Airy disc amplitude, the 2D Fourier transform of a circular region in 2D frequency space, as opposed to a square region.
• If exposure levels are set for objects inside the room, the bright image of the windows will bleed past the window frames when convolved with the Airy disc of the camera being used to produce the image.
• The phenomenon of optical diffraction sets a limit to the resolution and image quality that a telescope can achieve, which is the effective area of the Airy disc, which limits how close two such discs can be placed.
• In HDRR images, the effect can be re-produced by convolving the image with a windowed kernel of an Airy disc ( for very good lenses ), or by applying Gaussian blur ( to simulate the effect of a less perfect lens ), before converting the image to fixed-range pixels.
• In optics, the "'Airy disk "'( or "'Airy disc "') and "'Airy pattern "'are descriptions of the best focused spot of light that a perfect lens with a circular aperture can make, limited by the diffraction of light.
• In other words, if ? max is small, the Airy disc is large ( which is just another statement of Heisenberg's uncertainty principle for FT pairs, namely that small extent in one domain corresponds to wide extent in the other domain, and the two are related via the " space-bandwidth product " ).
• As long as the brightness of adjacent parts of the image are roughly in the same range, the effect of the blurring caused by the Airy disc is not particularly noticeable; but in parts of the image where very bright parts are adjacent to relatively darker parts, the tails of the Airy disc become visible, and can extend far beyond the extent of the bright part of the image.
• As long as the brightness of adjacent parts of the image are roughly in the same range, the effect of the blurring caused by the Airy disc is not particularly noticeable; but in parts of the image where very bright parts are adjacent to relatively darker parts, the tails of the Airy disc become visible, and can extend far beyond the extent of the bright part of the image.
• The result, " ? " = 4.56 / " D ", with " D " in inches and " ? " in arcseconds is slightly narrower than calculated with the Rayleigh criterion : A calculation using Airy discs as point spread function shows that at Dawes'limit there is a 5 % dip between the two maxima, whereas at Rayleigh's criterion there is a 26.3 % dip.