Erecting equal-magnification lens array plate and image reading device

An image reading device comprising:

• a document table on which a document is placed;
• a line light source configured to illuminate the document;
• an erecting equal-magnification lens array plate configured to receive light reflected from the document and form an erect equal-magnification image on a predetermined image plane;
• and
• a line image sensor configured to receive the erect equal-magnification image formed by the erecting equal-magnification lens array plate;
• wherein the erecting equal-magnification lens array plate comprises:
• a first lens array plate formed with a plurality of lenses on each of two surfaces thereof and arranged such that one of the surfaces is opposite to the document table;
• a second lens array plate formed with a plurality of lenses on each of two surfaces thereof and arranged such that one of the surfaces is opposite to the first lens array plate and the other surface is opposite to the line image sensor;
• a shielding member provided with a plurality of through holes corresponding to lenses formed on a surface of the first lens array plate and provided on said surface of the first lens array plate such that the through holes are located directly opposite to the corresponding lenses;
• and
• a light-shielding wall provided upright on a surface of the light-shielding member facing the document table and configured to shield light reflected by the document table,
• wherein the light-shielding wall is formed outside an angle of view of the lenses formed on a surface of the first lens array plate.