| 摘要 |
<p>In a light irradiation method, a main irradiation section forming a target and a sub irradiation section for providing sub illumination light to or from at least one of a background and a neighborhood of the target are provided, and a perceived brightness of the target is varied by performing time-wise control of an intensity of the sub illumination light emitted by the sub irradiation section. When applied to an illumination system wherein the main irradiation section is an illumination source, or to an indication system wherein the main irradiation section is an indication lamp, a perceived brightness of the illumination source or the indication lamp is decreased by increasing the intensity of the sub illumination light, while increased by decreasing the intensity of the sub illumination light. When applied to an image display system wherein the main irradiation section is an image display section for displaying a prescribed image, a perceived brightness of the prescribed image is increased by increasing the intensity of the sub illumination light, while decreased by decreasing the intensity of the sub illumination light. <IMAGE></p> |
