| 摘要 |
PROBLEM TO BE SOLVED: To obtain an exposure device capable of preventing aberration from occurring. SOLUTION: When a laser beam L emitted from a semiconductor laser LD is divided into several in a subscanning direction by an array refracting element 36 and condensed on thermal sensitive material T, it is temporarily condensed at a 1st condensing position between a fiber array part 30 and the material T by a 1st optical system constituted of a 1st collimator lens 32A and a 1st condensing lens 38A. Then, the specified areas at both ends in the subscanning direction of the laser beam L are shielded by an array aperture plate 39 at the condensing position. COPYRIGHT: (C)2003,JPO |
