| 摘要 |
<P>PROBLEM TO BE SOLVED: To enable detailed light quantity correction by making the leap of light quantity correction amount of the light emitting element small. <P>SOLUTION: In the light quantity correction method to reduce a light quantity difference between light emitting elements of LED array 41 by using light quantity correction unit 100 that corrects the light quantity in the correction range Es, the range of the correction range Es is individually set corresponding to the width per one of the light-emitting arrays of luminance distribution Bs of the light emitting element. Since the range of the correction range narrows compared with the case to set the range to do the cover of all brightness variation caused in the production if it does like this, the leap of the correction amount becomes small, and a detailed quantity of light correction of the decision becomes possible. Moreover, the range of correction range Es is individually sets corresponding to the width of luminance distribution Bs, so that there is no occurrence of the light emitting element which cannot be corrected. <P>COPYRIGHT: (C)2013,JPO&INPIT |
