| 摘要 |
PROBLEM TO BE SOLVED: To correct the light amount of an LED head in consideration of the entire emission intensity from a low part to a high part.SOLUTION: Each of a plurality of LED elements arranged in an LED head is caused to emit light, the arraying direction of the plurality of LED elements is set as a scanning direction, scanning is performed by using a slit intersecting this scanning direction at a predetermined angle, emission intensity distribution data indicating the distribution of the emission intensity of the plurality of LED elements on a plane coordinate system is generated, a pseudo emission shape specified by a pseudo distribution on the spatial coordinate system of the emission intensity of each of the plurality of LED elements is generated based on this emission intensity distribution data, the volume value of the pseudo emission shape is calculated, and the driving current correction value of each of the plurality of LED elements is calculated so that the volume value can approach a specific value.SELECTED DRAWING: Figure 9 |
