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:
Oct. 24, 2017
Filed:
Dec. 03, 2014
Canon Kabushiki Kaisha, Tokyo, JP;
Kazuhiro Inoko, Utsunomiya, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
The illumination optical system is capable of reducing, without moving any optical member and without causing flicker when displaying a still image, sample-and-hold blur when displaying a moving image. The illumination optical system () respectively guides multiple light fluxes (Li, Lii, Liii) from multiple light sources (i, ii, iii) in a light source unit () to multiple illumination regions () on an illumination surface (). The illumination optical system includes an integrator optical system () located between the light source unit and the illumination surface. The integrator optical system includes a first lens array () and a second lens array () each including multiple lens cells in order from a light source unit side. The illumination optical system changes illumination states of the multiple illumination regions depending on changes of states of the light sources.