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:
Nov. 23, 2004
Filed:
Oct. 30, 2003
Fuji Photo Optical Co., Ltd., Saitama, JP;
Abstract
A dichroic prism according to the present invention comprises first to fourth right angle prisms and respectively having first side faces and , and second side faces and , the side faces being arranged perpendicular to each other. A second bonded face and a fourth bonded face , each having a dichroic film for a second color light, are arranged on the same plane. The first bonded face and a third bonded face , each having the dichroic film for a first color light, are deviated by a predetermined distance. The distance of this deviation is adjusted so that an image formed by the light having reference image information corresponds to the image of the reference image information. The light is made incident on and reflected by the first bonded face and the third bonded face. Therefore, an appropriate image quality can be obtained without depending on a right angle precision.