ERECT EQUAL MAGNIFICATION LENS ARRAY PLATE, OPTICAL SCANNING UNIT, AND IMAGE READING DEVICE

摘要

PROBLEM TO BE SOLVED: To provide an erect equal-magnification lens array plate capable of removing stray light satisfactorily. SOLUTION: The erect equal-magnification lens array plate 11 is provided with a first lens array plate 24 having a plurality of first lenses 24a arranged regularly on a first face 24c and a plurality of second lenses 24b arranged regularly on a second face 24d opposing the first face 24c and a second lens array plate 26 having a plurality of third lenses 26a arranged regularly on a third face 26c and a plurality of fourth lenses 26b arranged regularly on a fourth face 26d opposing the third face 26c. The first lens array plate 24 and the second lens array plate 26 are stacked by making the second face 24d and the third face 26c oppose each other to make a set of corresponding lenses constitute a coaxial lens system in order to form an erect equal-magnification image of a document G on an image face at a fourth face 26d side by receiving light from the document G at a first face 24c side. The second lenses 24b are arranged without generating a clearance between the adjacent lenses. COPYRIGHT: (C)2011,JPO&INPIT