Surface-emission laser array, optical scanning apparatus and image forming apparatus

摘要

A surface-emission laser array comprises a plurality of surface-emission laser diode elements arranged in the form of a two-dimensional array, wherein a plurality of straight lines drawn perpendicularly to a straight line extending in a first direction from respective centers of the plurality of surface emission laser diode elements aligned in a second direction perpendicular to the first direction, are formed with generally equal interval in the first direction, the plurality of surface-emission laser diode elements are aligned in the first direction with an interval set to a reference value, and wherein the number of the surface-emission laser diode elements aligned in the first direction is smaller than the number of the surface-emission laser diode elements aligned in the second direction.

主权项

1. A surface-emission laser array comprising a plurality of surface-emission laser diode elements arranged in the form of a two-dimensional array,
wherein a plurality of straight lines drawn perpendicularly to a straight line extending in a first direction from respective centers of said plurality of surface emission laser diode elements aligned in a second direction perpendicular to said first direction, are formed with generally equal interval in said first direction, said surface-emission laser diode elements aligned in the first direction being disposed with a first interval in said first direction, said surface-emission laser diode elements aligned in the second direction being disposed with a second interval in the second direction, the first interval being smaller than the second interval, wherein the number of the surface-emission laser diode elements aligned in the first direction is smaller than the number of the surface-emission laser diode elements aligned in the second direction.