Patent ID: 7845807

Claim:
A projection apparatus comprising: a plurality of semiconductor light-emitting elements for emitting light; a spatial modulation element that performs spatial modulation of light emitted from the semiconductor light-emitting element and outputs image signal light; a light-collecting optical system disposed between the semiconductor light-emitting elements and the spatial modulation element, for collecting light emitted from each of the semiconductor light-emitting elements and individually outputting the collected light from each of the semiconductor light-emitting elements as high-directivity light to the spatial modulation element; and a projection unit that projects the image signal light output from the spatial modulation element onto a projection plane, wherein the plurality of semiconductor light-emitting elements are arranged on a substrate supporting the semiconductor light-emitting elements, in one or more parallel rows of semiconductor light-emitting elements, each including two or more semiconductor elements arranged in a straight line in a first direction at a first pitch; and the first pitch is smaller than or equal to the full width at half maximum of an illumination distribution of light emitted from one of the semiconductor light-emitting elements, formed by the spatial modulation element.