| 摘要 |
<p>PURPOSE:To smooth the distribution of brightness. CONSTITUTION:A plurality of fluorescent lamps 13L, 13D emitting a plurality of light colors L, D, respectively, are arranged in a line to form a lamp line 14. The lamp line 14 is set so that expressions 11>=12>=...>1n, 11>1n, where (n) is an integer, are satisfied when the intervals between the fluorescent lamps 13L and 13D of the same light color is 11, 12...1n progressively from the center O of the lamp line 14 to one end part.</p> |
