Patent ID: 7868969

Claim:
An area light source apparatus for illuminating a liquid crystal display apparatus of the transmission type, which has a display area formed from a plurality of pixels arrayed in a two-dimensional matrix, from the back, comprising: a plurality of light emitting element assemblies each provided as a light source and each including a light emitting element and a lens through which light emitted from said light emitting element passes; and a plurality of dummy lenses disposed in the proximity of each of said light emitting element assemblies and configured same as the lenses of said light emitting element assemblies, wherein, in the proximity of any of said light emitting element assemblies, other ones of said light emitting element assemblies are disposed, one of said light emitting element assemblies is disposed in a region in which light emitted from the lens of another one of said light emitting element assemblies is introduced directly into the light emitting element assembly, a light emitting element assembly group is composed of a plurality of ones of said light emitting element assemblies which are positioned at the vertices of one or a plurality of imaginary squares, and a plurality of ones of said dummy lenses are disposed on the outer side of the light emitting element assembly group in such a manner as to be positioned at the vertices of imaginary squares of the same shape as that of the imaginary square.