释义 |
DictionarySeeilluminationfocal illumination
fo·cal il·lu·mi·na·tionillumination in which a beam of light is directed diagonally to an object so that it is brilliantly illuminated while the surrounding area is in shadow. Synonym(s): lateral illumination, oblique illuminationfocal illuminationConcentration of light on an object by a mirror or a system of lenses.See also: illumination |