| 摘要 |
An optical system unit includes a light source to project a light onto a document, a plurality of reflecting mirrors to receive the light reflected from the document and forming a plurality of optical paths, a lens to form an image by focusing the light reflected from the reflecting mirrors at a focusing position thereof, and a reading unit disposed at the focusing position of the lens, wherein at least seven optical paths are formed between the document and the lens by the plurality of reflecting mirrors, and a first reflecting mirror that receives the light from the document along a first optical path is disposed lower than the other reflecting mirrors.
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