UPRIGHT UNIT-MAGNIFICATION LENS ARRAY UNIT, IMAGE READING DEVICE AND IMAGE FORMING DEVICE

摘要

Disclosed is an upright unit-magnification lens array unit, comprising a first lens array and a second lens array. The first lens array has a plurality of first lenses. The second lens array has a plurality of second lenses. The optical axes of the second lenses overlap with the optical axes of the first lenses. The first lens array and the second lens array have mutually overlapping optical axes and form a unit optical system. The unit optical system is an upright unit-magnification optical system. The unit optical system is substantially telecentric on at least the object side. The object imaging position of the first lenses is positioned between the first lens array and second lens array.