Image forming apparatus

An image forming apparatus comprising:

• a photoconductor having a surface conveyed in a sub direction substantially orthogonal to a main direction;
• a light emitting substrate having a plurality of two-dimensionally arrayed light emitting point groups;
• and
• a plurality of imaging optical systems that images light from the plurality of light emitting point groups onto mutually different positions on the photoconductor,
• wherein an optical axis of each of the plurality of imaging optical systems are parallel to one another,
• imaging magnifications of the plurality of imaging optical systems are substantially equal for each of the light emitting point groups,
• the plurality of imaging optical systems includes:
• a first lens array having a plurality of imaging lenses arranged to face the light emitting point groups;
• a second lens array having a plurality of imaging lenses each arranged to face each of the plurality of imaging lenses constituting the first lens array;
• and a plurality of apertures arranged between the first and second lens arrays so as to face the plurality of imaging lenses,
• central points of the light emitting point group exist in a first plane which is substantially an identical plane,
• central points of the plurality of imaging lenses constituting the first lens array exist in a second plane which is substantially an identical plane,
• central points of the plurality of apertures exist in a third plane which is substantially an identical plane,
• central points of the plurality of imaging lenses constituting the second lens array exist in a fourth plane which is substantially an identical plane,
• the first plane forms a non-zero predetermined angle with respect to a plane perpendicular to an optical axis direction, and
• the angle formed with respect to the plane perpendicular to the optical axis direction is greater in the order of the first plane, the second plane, the third plane, and the fourth plane.