Image transfer device having laminated lens array sheets

An image transfer device comprising:

• a lens array laminate forming an erecting unit magnification optical system, said lens array laminate including first predetermined plural number of lens array sheets each of which has convex-convex lens elements arranged in second predetermined plural number of rows and which are substantially closely laminated in a direction of a lens optical axis and wherein
• said first predetermined number is 3;
• said lens array laminate is formed so that lens faces located on opposite sides and symmetric to each other with respect to a center of said lamination are set to be equal in curvature radius to each other;
• and
• said lens array laminate satisfies the relations:
• R1≠R2 and R2≠R3
• in which R1 is a curvature radius of outer lens faces in outer lens array sheets, R2 is a curvature radius of inner lens faces in the outer lens array sheets, and R3 is a curvature radius of opposite lens faces in an intermediate lens array sheet.