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    • 9. 发明授权
    • Image reading apparatus
    • 图像读取装置
    • US08711442B2
    • 2014-04-29
    • US13361518
    • 2012-01-30
    • Hiroyuki KawanoTaku MatsuzawaTatsuki OkamotoTadashi MinobeTatsuya Kunieda
    • Hiroyuki KawanoTaku MatsuzawaTatsuki OkamotoTadashi MinobeTatsuya Kunieda
    • H04N1/387H04N1/04
    • G03G15/60H04N2201/0434
    • The object of the present invention is to provide an image reading apparatus having a large depth of field and being compact in size.The image reading apparatus includes a light source, an imaging optics system, an image pickup device unit, a memory, and a processor. The imaging optics system has a plurality of cells each being an independent optics system arranged in a main scanning direction, and arranged in two rows in a sub-scanning direction. In each of the cells, a first reflective light-gathering optical element, a first plane mirror, an aperture, and a second reflective light-gathering optical element are arranged in this order from a document, and the aperture is arranged at the back focal point position of the first reflective light-gathering optical element to form a telecentric optics system at the side of the document.
    • 本发明的目的是提供一种具有大景深并且尺寸紧凑的图像读取装置。 图像读取装置包括光源,成像光学系统,图像拾取装置单元,存储器和处理器。 成像光学系统具有多个单元,每个单元是沿主扫描方向布置的独立光学系统,并且在副扫描方向上布置成两行。 在每个单元中,从文件依次布置第一反射聚光光学元件,第一平面镜,孔和第二反射聚光光学元件,并且孔布置在后焦点 第一反射聚光光学元件的点位置,以在文档的侧面形成远心光学系统。