Illumination unit, projection display unit, and direct view display unit

A projection display unit comprising:

• an illumination optical system;
• a spatial modulation device modulating light from the illumination optical system based on an input picture signal to generate imaging light;
• and
• a projection optical system projecting the imaging light generated by the spatial modulation device,
• the illumination optical system including one or more light sources each including a solid-state light-emitting device including a package and at least one chip mounted on the package, each chip configured to emit a light beam as a light-emitting spot, and an optical member having a minor axis and a major axis, and allowing incident light from the solid-state light-emitting device to pass therethrough,
• wherein a total of at least three of the light-emitting spots are provided within the whole of the one or more light sources, to allow the whole of one or more light sources to emit light beams in two or more wavelength bands different from one another,
• wherein the solid-state light emitting device in a first one of the light sources includes a plurality of the chips mounted on the same package, each of the chips emitting light in the same wavelength band,
• wherein at least one chip of at least one of the light sources includes a laser diode,
• wherein a second one of the light sources includes a plurality of light-emitting spots and includes a chip including the laser diode, and
• wherein a direction of a minor axis of a far field pattern (FFP) in light emitted from each of the light-emitting spots substantially agrees with a direction of the minor axis of the optical member in a plane perpendicular to an optical axis of the optical member.

A direct view display unit comprising:

• an illumination optical system;
• a spatial modulation device modulating light from the illumination optical system based on an input picture signal to generate imaging light;
• a projection optical system projecting the imaging light generated by the spatial modulation device;
• and
• a transmissive screen displaying the imaging light projected from the projection optical system,
• the illumination optical system including one or more light sources each including a solid-state light-emitting device including a package and at least one chip mounted on the package, each chip configured to emit a light beam as a light-emitting spot, and an optical member having a minor axis and a major axis, and allowing incident light from the solid-state light-emitting device to pass therethrough,
• wherein a total of at least three of the light-emitting spots are provided within the whole of the one or more light sources, to allow the whole of one or more light sources to emit light beams in two or more wavelength bands different from one another,
• wherein the solid-state light emitting device in a first one of the light sources includes a plurality of the chips mounted on the same package, each of the chips emitting light in the same wavelength band,
• wherein at least one chip of at least one of the light sources includes a laser diode,
• wherein a second one of the light sources includes a plurality of light-emitting spots and includes a chip including the laser diode, and
• wherein a direction of a minor axis of a far field pattern (FFP) in light emitted from each of the light-emitting spots substantially agrees with a direction of the minor axis of the optical member in a plane perpendicular to an optical axis of the optical member.