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US 7,645,054 B2Granted
Illuminating unit comprising an optical element
AssigneePatent-Treuhand-Gesellschaft fur elektrische Gluhlampen mbH
InventorRupert Goihl
Life of this patent
Estimating the term…
Abstract
An illuminating unit comprising a luminous means (5) and an optical element (1) that has a radiation entrance surface (2) facing the luminous means (5) and a radiation exit surface (3) averted from the luminous means (5). The optical element (1) has at least one holographic element (4) that is designed as a beam shaping element for the radiation (7) emitted from the luminous means (5).
Claims24
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.
5 more elements
An illuminating unit comprising:
- a luminous means;
- a first optical element comprising a radiation entrance surface facing toward the luminous means, 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 the first optical element includes a switchable diffractive element.
3 more elements
Dependencies are inferred from the claim text.