|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||358/293 ; 358/285 ; 358/206|
|발명자 / 주소|
|출원인 / 주소|
|인용정보||피인용 횟수 : 9 인용 특허 : 4|
An arrangement for optically reducing range finder effect in scanning systems employing plural image scanning arrays or a flying spot scanning beam. In the former, to reduce visually observable artifacts at the point where crossover is made from one adjoining array to the next due to misalignments of the scanning system components, field lenses are disposed between the system projection lenses and the document supporting platen. The field lenses serve to bend the imaging rays to a direction more nearly normal to the platen to thereby increase the depth o...
Means for enhancing the depth of focus in a raster image scanner having scanning means for scanning across a document original line by line along a first scan axis, together with means for establishing relative movement between said scanning means and the document original along a second scan axis substantially perpendicular to said first scan axis, the combination of: at least one projection lens for focusing imaging rays on said document original; and optical means for bending said imaging rays so that said imaging rays are substantially normal to both...