| 摘要 |
<p>A lighting device includes a lighting panel comprising a plurality of surface light emitters arranged in parallel with one another, and a drive unit for illuminating the lighting panel in a bright-light mode or in a low-light mode that is darker than the bright-light mode. The lighting device also includes a brightness detector for detecting the brightness levels of each of the surface light emitters and creating detection outputs. The drive unit stores the detection outputs created by the brightness detector during the bright-light mode for each of the surface light emitters. During the low-light mode, the drive unit selects a brightness level for each surface light emitter according to the stored detection outputs, and illuminates the surface light emitters to the selected brightness levels.</p> |
