An array refracting element for dividing laser beams in a sub-scanning
direction, which is formed by linearly disposing a pair of refracting
members, each having a unit surface shape for dividing one incident laser
beam into two and emitting the divided laser beams, so that directions in
which the laser beams are divided are coincident with each other and so
that the refracting members locate along the division direction, is
disposed on an optical path of the laser beams emitted from plural
semiconductor lasers, and between a laser-beam outgoing opening of a
fiber array section and a recording film. As a result, an array
refracting element and an exposure device, which can improve quality of a
recording image at an exposure recording apparatus at a low cost, can be
obtained.