The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 06, 1997
Filed:
Apr. 07, 1995
Nobuhiro Fujinawa, Kanagawa-ken, JP;
Masayuki Inami, Kanagawa-ken, JP;
Toshiya Aikawa, Kanagawa-ken, JP;
Nikon Corporation, Tokyo, JP;
Abstract
An optical element that produces line bow, for example, a toric or cylindrical mirror or lens, is provided in a light-supplying optical device in addition to a first line-bow-producing optical element already present in the device so that a substantially straight line of light is formed on an original document. The light-supplying optical device also includes a light source that generates illuminating light to illuminate the original document and the first optical element that has a toric surface for collecting the illuminating light onto the original document and that is positioned so that the illuminating light shines at a certain angle relative to its toric surface. With this device, the second optical element having a toric surface is positioned in the optical path of the light source and of the original document so as to offset the curve of the illuminating light that otherwise would be generated on the original document by the first optical element.