Patent ID: 7645054

Claim:
An illuminating unit comprising: a luminous means; a first optical element comprising a radiation entrance surface facing toward the luminous means, and a radiation exit surface facing away from the luminous means; at least one first holographic element disposed in or on the first optical element and configured as a beam shaping element for shaping radiation emitted from the luminous means; and one of a second holographic element, a microlens array, and a microprism array arranged in or on the first optical element or another optical element of said illuminating unit, said first holographic element and said one of a second holographic element, a microlens array, and a microprism array being configured to reduce chromatic aberrations; wherein a second optical element is included as primary optics for the luminous means between the luminous means and the radiation entrance surface of the first optical element; and wherein the second optical element is a light guide.