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US 2009/0213338 A1Published application
Illumination optical system and image display apparatus making use thereof
AssigneeCanon Kabushiki Kaisha
InventorKazuhiro Inoko
Life of this patent
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AssigneeCanon Kabushiki Kaisha
InventorKazuhiro Inoko
Estimating the term…
An illumination optical system for illuminating a surface to be illuminated with a light beam from a light source, in a first plane which is parallel with the optical axis of the illumination optical system, the light beam from the light source is split, and a plurality of first light source images are formed in a first light source image zone with the use of the thus split light beams; light beams from the plurality of first light source images being led to the surface to be illuminated, in a second plane which is parallel with the optical axis of the illumination optical system and which is perpendicular to the first plane, the light beam from the light source is split, and a plurality of second light source images are formed in a second light source image zone, with the use of the thus split light beams, light beams from the plurality of second light source images being led to the surface to be illuminated, where the width of the first light source image zone in the first plane is greater than that of the second light source image zone in the second plane.
An illumination optical system for illuminating a surface to be illuminated comprising:
An illumination optical system for illuminating a surface to be illuminated with light from a light source through the intermediary of a polarization separation surface, in which there are defined a second plane which is parallel with a normal line to the polarization separation surface and the optical axis of the illumination optical system, and a first plane which is perpendicular to the second plane and which is parallel with the optical axis of the illumination optical system, comprising, successively arranged in the mentioned order from the light source comprising:
An illumination optical system for illuminating a surface to be illuminated with light from a light source through the intermediary of a polarization separation film, in which there are defined a second plane which is parallel with a normal line to the polarization optical surface and the optical axis of the illumination optical system and a first plane which is perpendicular to the second plane and which is parallel with the optical axis of the illumination optical system, comprising:
An illumination optical system comprising:
Dependencies are inferred from the claim text.