Patent ID: 7859757
Filing Date: 2010-12-28
Classification: B41J,G02B,G03G

Abstract:
1. A lens array comprising: a plurality of lens groups each of which includes lenses having noncircular shapes so disposed that optical axes thereof are aligned with each other, said lens groups being arranged in a direction perpendicular to said optical axes, and a light-blocking portion that shields each of said lens groups from light having passed through any lens of other lens groups, said light-blocking portion having a plurality of opening provided corresponding to said lens groups so as to cause light to pass through respective lens groups, said opening having center axes aligned with said optical axes, wherein a largest diameter D of said lens and a center-to-center distance P of adjacent lens groups satisfy the relationship: wherein each of said openings has a width W wherein said opening has a substantially cylindrical shape whose diameter is the same as said width W