Patent ID: 9651220
Date: 2017-05-16
CPC Classifications: F21V,G02B,G03B

Claim:
1. A light module for generating wavelength-converted light, the light module comprising: an excitation radiation source configured to generate excitation radiation having at least one wavelength in a first wavelength range; a color wheel, which is rotatable about a rotation axis and which is subdivided into a first region and a second region, which are arranged in a non-overlapping fashion and in a radial direction with respect to one another, such that one of the two regions constitutes an inner region of the color wheel and one of the two regions constitutes an outer region of the color wheel; wherein the color wheel has a plurality of sectors, wherein a wavelength conversion element is arranged in the first region at least in one of the sectors of the color wheel, said wavelength conversion element being designed to convert radiation having a wavelength in the first wavelength range into light having a dominant wavelength in a second wavelength range, which differs from the first wavelength range; wherein the light module is embodied in such a way that excitation radiation emitted by the excitation radiation source can be directed onto the color wheel in such a way that upon a rotation of the color wheel about the rotation axis the sectors can be irradiated sequentially and within the first region; and wherein at least one subregion of the second region is embodied as light-transmissive for at least one part of the visible wavelength spectrum, wherein the light module is embodied in such a way that at least one part of the emitted light converted by the at least one wavelength conversion element can be guided through the at least one subregion of the second region embodied as light-transmissive for at least one part of the visible wavelength spectrum to an output of the light module; wherein the light module has at least one first static filter element designed depending on the wavelength in the first wavelength range; wherein the light module is configured in such a way that part of the light emitted by the color wheel at least partly counter to a direction of incidence of the excitation radiation on the color wheel is guided on a first light path to the output of the light module, and part of the light is guided on a second light path to the output, said second light path differing at least partly from the first light path, wherein at least the second region of the color wheel is arranged at least partly in the first light path, and wherein the color wheel is not arranged in the second light path; wherein the first and second light paths run identically from the color wheel as far as the at least one first static filter element and are separated by the at least one first static filter element.