Patent ID: 8179414
Filing Date: 2012-05-15
Classification: B41J,G02B,G03G,H01S,H04N

Abstract:
1. A surface-emitting laser array including a plurality of light emitting parts arranged in a two-dimensional formation having two orthogonal directions, wherein the plurality of light emitting parts are arranged in rows, each row including a subset of light emitting parts linearly arrayed along the row in a direction parallel to one of the two orthogonal directions, and the directions of the rows being parallel to each other, wherein, when the plurality of light emitting parts are orthogonally projected on a virtual line parallel to the one of the two orthogonal directions, a spacing between two of the plurality of light emitting parts along the virtual line is equal to an integral multiple of a predetermined value, wherein said plurality of light emitting parts orthogonally projected on the virtual line include a first light emitting part, a second light emitting part adjacent to the first light emitting part along the virtual line, and a third light emitting part adjacent to the second light emitting part along the virtual line, the first, second and third light emitting parts are located at a central position in the one of the two orthogonal directions, and a spacing between the first and second light emitting parts differs from a spacing between the second and third light emitting parts in the one of the two orthogonal directions.