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1. (WO2017064868) PROJECTOR

Pub. No.:    WO/2017/064868    International Application No.:    PCT/JP2016/004574
Publication Date: Fri Apr 21 01:59:59 CEST 2017 International Filing Date: Sat Oct 15 01:59:59 CEST 2016
IPC: G03B 21/14
F21S 2/00
F21V 7/22
F21V 9/08
F21V 9/16
G03B 21/00
H04N 9/31
Applicants: SEIKO EPSON CORPORATION
セイコーエプソン株式会社
Inventors: MASUDA, Tomoharu
増田 智春
Title: PROJECTOR
Abstract:
The purpose of the present invention is to provide a projector such that the color gamut can be expanded while reduction of luminance in a projected image can be suppressed. The projector comprises: an illumination device; a first color separation device for separating first color light and second color light from the light emitted from the illumination device; a second color separation device for separating third color light and fourth color light from the second color light separated by the first color separation device; a plurality of optical modulation devices for modulating the light separated by the first and second color separation devices; a projection optical device for projecting an image based on the modulated light; a first filter provided along the optical path for the third color light so as to be insertable and removable; and a second filter provided along the optical path for the fourth color light so as to be insertable and removable. The wavelength of the third color light is shorter than the wavelength of the fourth color light. The first filter reduces the light having a wavelength greater than a first threshold set within a light-reduction wavelength range which is between the wavelength range of the third color light and the wavelength range of the fourth color light. The second filter reduces the light having a wavelength no greater than a second threshold set within the light-reduction wavelength range.