Optical lens device of image scanner

Details Optical lens device of image scanner Optical lens device of image scanner

2006-08-03

2010-10-05

Phan, James (Department: 2872)

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

C358S474000, C358S483000

Reissue Patent

active

RE041794

ABSTRACT:
An optical lens device of image scanner includes a diaphragm and plural lenses. The plural lenses, diaphragm, and image induction element are linearly arranged for defining an optical path between the document and the image induction element. Wherein, among the plural lenses, the one that is most close to the manuscript is called the first lens, and the other one that is most close to the image induction element is called the last lens, and the distance between the last lens and the image induction element is called BFL, and the length of the image induction element is called image height, and the total optical length between the document and the image induction element is called TT, and the effective focus length of the optical lens device is called EFL. If the optical lens device fulfills following conditions: the diameter of the last lens/the diameter of the first lens>1; EFL/image height<0.9; and BFL/TT<0.05, then the values of TT and BFL may be reduced relatively, and the entire volume of the image scanner may also be shrunk relatively.

REFERENCES:
patent: 6147811 (2000-11-01), Fujibayashi
patent: 6208474 (2001-03-01), Kondo
patent: 6469820 (2002-10-01), Mushiake et al.
patent: 2354184 (1999-12-01), None
patent: H11-237547 (1999-08-01), None
patent: 2001-100095 (2001-04-01), None
patent: 2002-244033 (2002-08-01), None

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