(19)
(11) EP 1 761 074 A8

(12) CORRECTED EUROPEAN PATENT APPLICATION
Note: Bibliography reflects the latest situation

(15) Correction information:
Corrected version no 1 (W1 A1)

(48) Corrigendum issued on:
16.05.2007 Bulletin 2007/20

(43) Date of publication:
07.03.2007 Bulletin 2007/10

(21) Application number: 06005428.5

(22) Date of filing: 16.03.2006
(51) International Patent Classification (IPC): 
H04N 9/31(2006.01)
G02B 27/28(2006.01)
 G02F 1/13357(2006.01)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
Designated Extension States:
AL BA HR MK YU

(30) Priority: 01.09.2005 JP 2005253709

(71) Applicant: Olympus Corporation
Tokyo 151-0072 (JP)

(72) Inventors:
  • Sakai, Hiroshi Intellectual Property Support Dept
    Hachioji-shi Tokyo 192-8512 (JP)
  • Yamanaka, Kazuya Intellectual Propert.Support Dept
    Hachioji-shi Tokyo 192-8512 (JP)
  • Ito, Hideyuki Intellectual Property Support Dept
    Hachioji-shi Tokyo 192-8512 (JP)

(74) Representative: von Hellfeld, Axel 
Wuesthoff & Wuesthoff Patent- und Rechtsanwälte Schweigerstrasse 2
81541 München
81541 München (DE)

   


(54) Colour-sequential projection system


(57) An image display device includes a light source unit (100) which successively emits illumination lights of different colors which have wavelength bands different from one another in accordance with color information of an image signal, an image modulating unit (200) which successively modulates the illumination lights of different colors in accordance with the color information of the image signal and generates modulated lights, a light path shift unit (300) capable of shifting a light path of the modulated lights, and a projection optical unit (400) which projects the modulated lights, wherein the light path shift unit includes a first wavelength selectable polarization rotation device (310) configured to carry out rotation control on polarization directions of the modulated lights modulated by the image modulating unit in accordance with colors and a first birefringent plate (320) to which the modulated lights from the first wavelength selectable polarization rotation device are applied.