| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a line head that performs high-accuracy exposure processing and an image forming apparatus that ensures a high-quality image. <P>SOLUTION: The line head 13 includes a plurality of light-emitting elements 74 arranged in different positions in a first direction; and an imaging optical system 60 that images light L emitted from the light-emitting elements 74. When a difference between the maximum and minimum values of a longitudinal aberration of the optical system 60 in the passage area of the light L is denoted as G, a distance in the first direction between the light-emitting elements 74 is denoted as P<SB>el</SB>, and an optical magnification of the imaging optical system 60 is denoted asβ, a relation of G>¾β¾×P<SB>el</SB>is satisfied. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
