Illumination unit, projection display unit, and direct-view display unit
AssigneeSony Corporation
InventorKoji Miura
Life of this patent
Estimating the term…
Abstract
An illumination optical system including one or more light sources each including a solid-state light-emitting device and an optical member. The optical member includes an integrator including a first fly-eye lens on which light from the solid-state light-emitting device is incident and a second fly-eye lens on which light from the first fly-eye lens is incident, and uniformizing a luminance distribution of light in a predetermined illumination region illuminated with light incident from the solid-state light-emitting device. A major-axis direction of a luminance distribution shape of light incident on an incident plane of the first fly-eye lens is different from arrangement directions of the cells in the first fly-eye lens.
Claims21
An illumination unit comprising:
- at least one light source including a solid-state light-emitting device;
- and
- an optical member,
- wherein,
- the optical member includes an integrator including a first fly-eye lens and a second fly-eye lens that uniformize a luminance distribution of light in a predetermined illumination region illuminated with light from the solid-state light-emitting device, light from the solid-state light-emitting device being incident the first fly-eye lens, light from the first fly-eye lens being incident the second fly-eye lens,
- each of the first and second fly-eye lenses includes a plurality of cells, the cells in the first fly-eye lens being arranged in columns along a first direction and in rows along a second direction which intersects the first direction,
- a far field pattern (FFP) of light emitted from the solid-state light emitting device has an anisotropic shape, and
- the solid-state light emitting device and first fly-eye lens are arranged such that a luminance distribution shape of light incident on an incident plane of the first fly-eye lens also has an anisotropic shape caused by the anisotropic shape of the FFP, and a major-axis direction of the luminance distribution shape is different from both the first and second arrangement directions of the cells of the first fly-eye lens.
A projection display unit provided with an illumination optical system, a spatial modulating device, and a projection optical system, the spatial modulating device configured to modulate light from the illumination optical system based on an input image signal to generate image light, the projection optical system configured to project the image light generated by the spatial modulating device, the illumination optical system comprising:
- at least one light source including a solid-state light-emitting device;
- and
- an optical member,
- wherein,
- the optical member includes an integrator including a first fly-eye lens and a second fly-eye lens that uniformize a luminance distribution of light in a predetermined illumination region illuminated with light from the solid-state light-emitting device, light from the solid-state light-emitting device being incident the first fly-eye lens, light from the first fly-eye lens being incident the second fly-eye lens,
- each of the first and second fly-eye lenses includes a plurality of cells, the cells in the first fly-eye lens being arranged in columns along a first direction and in rows along a second direction which intersects the first direction,
- a far field pattern (FFP) of light emitted from the solid-state light emitting device has an anisotropic shape, and
- the solid-state light emitting device and first fly-eye lens are arranged such that a luminance distribution shape of light incident on an incident plane of the first fly-eye lens also has an anisotropic shape caused by the anisotropic shape of the FFP, and a major-axis direction of the luminance distribution shape is different from both the first and second arrangement directions of the cells of the first fly-eye lens.
A direct-view display unit provided with an illumination optical system, a spatial modulating device, a projection optical system, and a transmissive screen, the spatial modulating device configured to modulate light from the illumination optical system based on an input image signal to generate image light, the projection optical system configured to project the image light generated by the spatial modulating device, the transmissive screen configured to display the image light projected from the projection optical system, the illumination optical system comprising:
- at least one light source including a solid-state light-emitting device;
- and
- an optical member,
- wherein,
- the optical member includes an integrator including a first fly-eye lens and a second fly-eye lens that uniformize a luminance distribution of light in a predetermined illumination region illuminated with light from the solid-state light-emitting device, light from the solid-state light-emitting device being incident the first fly-eye lens, light from the first fly-eye lens being incident the second fly-eye lens,
- each of the first and second fly-eye lenses includes a plurality of cells, the cells in the first fly-eye lens being arranged in columns along a first direction and in rows along a second direction which intersects the first direction,
- a far field pattern (FFP) of light emitted from the solid-state light emitting device has an anisotropic shape, and
- the solid-state light emitting device and first fly-eye lens are arranged such that a luminance distribution shape of light incident on an incident plane of the first fly-eye lens also has an anisotropic shape caused by the anisotropic shape of the FFP, and a major-axis direction of the luminance distribution shape is different from both the first and second arrangement directions of the cells of the first fly-eye lens.
Dependencies are inferred from the claim text.