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AssigneeNippon Sheet Glass Co., Ltd.
InventorsMasahide Wakisaka, Hiroyuki Nemoto, Takashi Kishimoto, Harunobu Yoshida
Estimating the term…
A lens array 4 is formed as an erect 1:1 imaging lens by superimposing two lens plates 40 and 40 together. Each lens plate 40 consists of a number of micro lenses 41 which are regularly provided at a predetermined pitch and in a two-dimensional manner. This lens plate 40 is for example made by press molding the ultraviolet curing resin in a soft condition using a transparent mold and by irradiating the ultraviolet light on the ultraviolet curing resin from outside for hardening. Since the lens array 4 is provided with micro lenses 41 in rows in a sub-scanning direction, deterioration of an amount of light level resulting from the displacement between a light axis of the lens and an image sensor 6 is not generated.
A lens array for an image sensor for converging the light from an illuminating device reflected at or transmitted through a document on a light-receiving element, wherein the lens array is formed as an erect 1:1 imaging lens by superimposing lens plates, wherein each lens plate is regularly provided with a number of micro lenses at a predetermined pitch and in a two-dimensional manner, and wherein the lens array has a close-packed structure.
Dependencies are inferred from the claim text.