Abstract: An illuminating apparatus is formed with an ultraviolet lamp and at least one incandescent lamps that repeat a predetermined illumination pattern in which the lamps are turned on, gradually brightened within a predetermined period, gradually dimmed out within a predetermined period subsequent to a period for the maximum illumination thereof, and then turned off, to light a picture, which is supported on a frame to which the illuminating apparatus is attached, to be recognized as nighttime and daytime views with natural changes therebetween.

Abstract: An illumination apparatus for illuminating paintings at least a part of which is painted by a particular paint that emits or reflects light upon reception of ultraviolet ray, has a first illumination lamp constituted of an ultraviolet lamp and a second illumination lamp constituted of incandescent lamps. The ultraviolet lamp and incandescent lamps are controlled by a control circuit to be repetitively turned on and off as time elapses in accordance with a control sequence selected by an observer. While the incandescent lamps are turned on, the ultraviolet lamp is turned off to make the painting viewed as, e.g., a daytime landscape without showing, e.g., a nighttime landscape, and while the incandescent lamps are turned on, the ultraviolet lamp is turned on to make the same painting viewed as the nighttime landscape.