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:
Apr. 22, 2014
Filed:
Jul. 26, 2011
Yu Yamauchi, Yokohama, JP;
Kazuhiro Inoko, Utsunomiya, JP;
Yu Yamauchi, Yokohama, JP;
Kazuhiro Inoko, Utsunomiya, JP;
Canon Kabushiki Kaisha, , JP;
Abstract
An image projection apparatus includes a beam splitter configured to split light from a light source into first color light and second color light, a first reflective image display element configured to optically modulate the first color light, a second reflective image display element configured to optically modulate the second color light, a first parallel plate arranged between the beam splitter and the first reflective image display element and made of a large refractive index wavelength dispersion, and a second parallel plate arranged between the beam splitter and the second reflective image display element and made of a large refractive index wavelength dispersion.