Title:
LIGHTING DEVICE AND PROJECTOR
Document Type and Number:
Japanese Patent JP2015145972
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a lighting device, provided with multiple light sources, which is excellent in speckle reduction effects.SOLUTION: A lighting device 2G according to the present invention comprises a light source device 7 provided with a plurality of light sources including a first light source, a second light source, and a third light source which are two-dimensionally disposed, and a shift device 11 for shifting the optical paths of a plurality of beams emitted from the light source device 7 in a prescribed direction, separately in time. The distance between the second light source and the first light source and the distance between the third light source and the first light source are shorter than the distance between any of the plurality of light sources, except the second and third light sources, and the first light source. The prescribed direction is a direction linking between the first light source and the second and third light sources.
Inventors:
EGAWA AKIRA
Application Number:
JP2014018863A
Publication Date:
August 13, 2015
Filing Date:
February 03, 2014
Export Citation:
Assignee:
SEIKO EPSON CORP
International Classes:
G03B21/14; F21S2/00; F21V3/00; F21V5/00; F21V5/02; F21V7/00; F21V11/00; F21V14/06; G02B27/48; H04N5/74
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Foreign References:
| WO2011092843A1 | 2011-08-04 |
Attorney, Agent or Firm:
Masatake Shiga
Yoshifumi Saeki
Kazunori Onami
Yoshifumi Saeki
Kazunori Onami