| 摘要 |
In an aspect of the present invention, an image reading apparatus includes a 2-dimensional image sensor having a plurality of light receiving elements arranged in a matrix, and configured to detect an image of a detection target; and a plurality of partition walls configured to hold the detection target in a non-contact state in a predetermined distance from an upper surface of the 2-dimensional image sensor. The plurality of partition walls may be provided on the 2-dimensional image sensor to form a plurality of slits. Also, the plurality of partition walls may function as shading members. Instead, the plurality of partition walls may function as light transmissible members. In this case, the refractive index of the plurality of partition walls may be larger than 1.1 and is smaller than 1.4 or is larger than 2.0 and is smaller than 5.0.
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