Patent ID: 8681397

Claim:
An erecting equal-magnification lens array plate comprising: a first lens array plate in which a plurality of lenses are provided on both surface of the plate along the main scanning direction; a second lens array plate in which a plurality of lenses are provided on both surface of the plate along the main scanning direction and which is provided to face the first lens array plate; a first light shielding member provided on the first lens array plate and provided with a plurality of first through holes located to directly face the lenses on one surface of the first lens array plate; a second light shielding member provided on the second lens array plate and provided with a plurality of second through holes located to directly face the lenses on one surface of the second lens array plate; and an intermediate light shielding member provided between the first lens array plate and the second lens array plate and provided with a plurality of intermediate through holes located to directly face the lenses on the other surface of the first lens array plate and the lenses on the other surface of the second lens array plate, wherein the first light shielding member, the second light shielding member, and the intermediate light shielding member are divided into two pieces by a splitting plane parallel with the main scanning direction, wherein one of the first light shielding member pieces, one of the second light shielding member pieces, and one of the intermediate light shielding member pieces produced by dividing the members into two pieces are integrated to form a first holder piece, wherein the other of the first light shielding member pieces, the other of the second light shielding member pieces, and the other of the intermediate light shielding member pieces produced by dividing the members into two pieces are integrated to form a second holder piece, and wherein the erecting equal-magnification lens array plate is assembled by sandwiching the first lens array plate and the second lens array plate by the first holder piece and the second holder piece.