| 摘要 |
An image sensor that is more compact than a contact type image sensor using a rod-lens array and has a depth of field of the same level as a contraction type image sensor using a set of mirrors. The sensor includes an array of a specified pixel-corresponding quantity of micro-lenses arranged for forming an image light reflected from an original document, an array of the specified pixel-corresponding quantity of optical fibers arranged for transmitting an image formed by the micro-lens array as respective optical signals of pixels and an array of light-receiving elements for converting optical signals incident thereon from the optical fiber array into electric signals, wherein the optical fiber array has core-end-faces each having a size smaller than that of an image formed by the micro-lenses and located on the micro-lens-side position from the image forming plane when the original document is placed at a specified base position.
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