| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a technology which can achieve excellent exposure in an exposure head where light from a light emitting element of a light emitting chip is formed by an image-forming optical system. <P>SOLUTION: The exposure head includes: a first light emitting chip having n1 (n1 is an integer of n1≥2) light emitting parts in a first direction; a second light emitting chip having n2 (integer of n2≥2) light emitting parts in the first direction which is arranged in the first direction of the first light emitting chip; m1 (m1 is an integer of m1≥2 and m1<n1) bonding wires electrically connected to m1 light emitting parts among n1 light emitting parts of the first light emitting chip; a wiring layer electrically connected to the m1 bonding wires; and the image-forming optical system having an optical magnification different from 1 for forming a light emitted from the m1 light emitting parts electrically connected to the m1 boding wires. <P>COPYRIGHT: (C)2012,JPO&INPIT |
