Patent ID: 6567218
Filing Date: 2003-05-20
Classification: G02B,G03B,H04N

Abstract:
An optical unit comprising:a light source unit for emitting light; an image display element having a light valve in which said light emitted from said light source unit is formed into an optical image in accordance with a video signal supplied thereto; a light optical system for irradiating said light from said light source unit to said image display element; wherein said optical unit comprises a reflector having one of a rectangular light emitting surface, a elliptical light emitting surface or a polygonal light emitting surface, said light source unit, a plurality of condenser lenses provided in a path of the light emitted from said light emitting surface of said reflector, a first array lens for forming a plurality of secondary order light source images by condensing said light from said light source unit, and a second array lens provided in the vicinity of said plurality of said secondary order light source images and for focusing each of a lens image of said first array lens to said image display element; wherein said light source unit has an electrode wire which is provided at one side of a lamp electrode in said reflector; and wherein at one side area where a shadow of said electrode wire crosses lens cells of said first lens array, the number of said lens cells of said first lens array in a vertical direction or lateral direction is equal to or greater than b/a, where â€œaâ€  is a width of said electrode wire and â€œbâ€  is a vertical size or lateral size of said lens cells of said first array lens.