| 摘要 |
An image projection device is provided with a light source device and uses light output from the light source device as projection light. The light source device is provided with a plurality of light-emitting elements. The plurality of light-emitting elements is divided into a plurality of light-emitting element groups according to the center frequency of each light-emitting element. The center frequency difference between the center frequency of a light-emitting element group and the center frequency of a neighboring light-emitting element group is larger than the average value of the full width at half maximum of spectrum in the plurality of light-emitting element groups, and is smaller than 11.4 THz. |
