Patent ID: 8698865
Filing Date: 2014-04-15
Classification: G02B,G03G

Abstract:
1. A lens array unit comprising: a first lens array plate in which a plurality of first lenses are provided in the main scanning direction; a second lens array plate in which a plurality of second lenses are provided in the main scanning direction; and a light shielding member provided with a plurality of through holes corresponding to the first and second lenses and including a first light shielding member piece and a second light shielding member piece produced by splitting the light shielding member by a plane through both open ends of the plurality of through holes, wherein one end of the first lens array plate in the sub-scanning direction is joined to one end of the second light shielding member piece in the sub-scanning direction, the other end of the first lens array plate in the sub-scanning direction is joined to one end of the first light shielding member piece in the sub-scanning direction, and the other end of the first light shielding member piece in the sub-scanning direction is joined to one end of the second lens array plate in the sub-scanning direction, wherein the first lens array plate, the second lens array plate, the first light shielding member piece, and the second light shielding member piece are formed as one piece, wherein the lens array is built by bending joints joining the first lens array plate, the second lens array plate, the first light shielding member piece, and the second light shielding member piece such that the first lens is located to directly face one opening of the through hole, and the second lens is located to directly face the other opening of the through hole.