Patent ID: 6611382
Filing Date: 2003-08-26
Classification: G02B

Abstract:
A laser illuminating apparatus for irradiating a linear spatial light modulator, comprising;a bar laser including a plurality of linearly arranged emitters; a lens array including a plurality of lens units less in number than said emitters and arranged parallel to the direction of arrangement of said emitters, for causing collimated laser beams incident on said lens units to converge at the final surface of said lens units at least on a plane including said direction of arrangement of said emitters and the optical axis; and optics for creating a superimposed far field pattern, in the direction of arrangement of said emitters, of the laser beams emitted from said bar laser onto said lens array, projecting the far field patterns of the laser beams divided by said lens array to said illumination area in superimposition, and projecting near field patterns, in a direction perpendicular to the direction of arrangement of said emitters, of the laser beams emitted from said bar laser on said illumination area in cooperation with said lens array.