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 Multiple-resolution scanning device

Details
Inventors: Sheng, Thomas; Chen, Chi Yao; Shiao, Hyman; Lee, Yueh Shing; Tu, Roger; Wu, Yung Chuan;
Assignee: Avision Inc. (Hsin-Chu, TW)
Primary Examiner: Cherry; Euncha P.
Assistant Examiner:
Attorney, Agent or Firm: Baxley; Charles E.

A multiple-resolution scanning device introduces an image information obtained by scanning a document into a light folding device and the image information is reflected in the light folding device. The image information comes out from the light folding device and received and reflected by a final reflection mirror unit, and passes through a lens unit and then focused on an optical sensor. By adjusting the light folding device or the final reflection mirror unit, or by adjusting the light source and the light folding device to change the position or angle thereof to achieve the purpose of changing the path of light of the image information and obtain the scanned results having different resolutions.

DETAILED DESCRIPTION The present invention is a multiple-resolution scanning device that changes paths of light to have the multiple-resolution.
The scanning device is embodied as a multiple-resolution scanning device which comprises: at least one light source which is used to illuminate the documents to be scanned to get the images; a light folding device having a first reflection mirror and a second reflection mirror which faces the first reflection mirror such that the images introduced by the light folding device is reflected between the first reflection mirror and the second reflection mirror; a final reflection mirror unit comprising at least one reflection mirror which receives the images coming from the light folding device; a lens located in the path where the images are reflected from the final reflection mirror unit and focusing on the images; an optical sensor for receiving the focused images from the lens; and at least one driving device for driving one of the light source, the light folding device, and the final reflection mirror unit so as to change the status of the assembly.
By adjusting the angle or position of the light folding device, or by adjusting the angle or position of the final reflection mirror unit, or by adjusting the positions of the light folding device and the light source simultaneously, the purpose of changing the path of light can be achieved and the scanning device may have a dual-resolution feature.
The present invention will become more obvious from the following description when taken in connection with the accompanying drawings which show, for purposes of illustration only, preferred embodiments in accordance with the present invention.



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