英和和英

名詞

light profile (countable and uncountable, plural light profiles)

1. (astronomy) A description of the distribution of surface brightness.
   • 2012, Alessandro Boselli, A Panchromatic View of Galaxies, page 162:

     The Sersic model generally provides an accurate description of the global radial light profile of galaxies but it fails to reproduce the inner regions […]

   • 2013, Neill I. Reid, ‎Suzanne L. Hawley, New Light on Dark Stars:

     The most extensive analysis of the light profile of a star was carried out by King [K1], who used photographic techniques to determine the surface brightness at radii of more than 10,000 times the half-width at half peak intensity (HW) of the image – a dynamic range of almost 28 magnitudes (Figure 1.13).

2. (physics) A description of the distribution of light intensity.
   • 2017, Fred M. Dickey, ‎Todd E. Lizotte, Laser Beam Shaping Applications, pages 3-33:

     A similar system can also be designed in which the far-field light profile, rather than the nearfield light profile, is input into the fly's eye integrator for light uniformization to then provide illumination to the modulator array.

   • 2021, Patrick J. Neale, ‎Oliver Zielinski, ‎Rebecca L. North, Climate Change and Light in Aquatic Ecosystems:

     Then we calculate the scalare K₀(PAR) from the light profile (reference observations).

3. (computer graphics) Data that describes the manner in which a light source behaves, and the type of shadows that are cast.
   • 2012, Todd Palamar, Mastering Autodesk Maya 2013, pages 9-45:

     Photometric lights allow you to attach light profiles created by light manufacturers so that you can simulate specific lights in your scenes.

4. (art) An outline or profile in which the figure is light and the background is shadow.
   • 2016, Sebastian Zeidler, Form as Revolt: Carl Einstein and the Ground of Modern Art, page 198:

     Each male summons forth a female pendant down along its contour, a negative of itself with which it is locked into a kiss: the male "shadow profile" at left is kissing a female "light profile"; the male "light profile" at right, a female "shadow profile."