Image scanner for image inputting in computers, facsimiles word

Abstract

It is an object of the invention to present an image scanner of high performance, high reliability, and low cost, capable of realizing high image quality of reading image and suited to small size, and an illuminating apparatus of low cost capable of increasing the quantity of light for illuminating an object to be read. To achieve the object, the invention provides an image scanner comprising: a light source for illuminating an object to be read, an optical system disposed for forming an image by focusing reflected light from the object to be read, and a semiconductor integrated circuit possessing n photoelectric conversion elements disposed in a row for receiving the image, wherein the semiconductor integrated circuit sequentially main-scans the photoelectric conversion elements principally, and the image scanner main body moves in a sub-scanning direction in relation to the object to be read, and the semiconductor integrated circuit is arranged so that the deviation width between the first photoelectric conversion element and the n-th photoelectric conversion element in the sub-scanning direction may correspond to the length equivalent to the product of the moving speed in the sub-scanning direction and the reading period of each photoelectric conversion element.