Optical element for variable message signs
AssigneeDambach-Werke GmbH
InventorBernd Eschbach
Life of this patent
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Abstract
An optical element for variable message signs includes an oblong housing, in which at least one light source as well as at least first and second lenses are arranged successively in the longitudinal direction of the housing. The lenses serve for defining the beam path of the light emitted by the light source in the irradiation direction, wherein the lens arranged closer to the light source is formed as a converging lens, and the lens arranged farther away from the light source is formed as a rod lens.
Claims11
An optical element for variable message signs, comprising an oblong housing in which at least one light source and at least first and second lenses are successively arranged in the longitudinal direction of the housing, wherein the first and second lenses serve to define the beam path of the light emitted by the light source in the irradiation direction, and wherein the first lens arranged closer to the light source is formed as a converging lens, and wherein the second lens arranged farther away from the light source is formed as a rod lens.
A variable message sign comprising a front plate, which comprises a plurality of accommodation holes, in which optical elements are arranged, each of the optical elements comprising an oblong housing in which at least one light source as well as at least first and second lenses are successively arranged in the longitudinal direction of the housing, wherein the first and second lenses serve to define the beam path of the light emitted by the light source in an irradiation direction, and wherein the first lens arranged closer to the light source is formed as a converging lens, and wherein the second lens arranged farther away from the light source is formed as a rod lens.
Dependencies are inferred from the claim text.