COLOUR-TUNABLE LIGHT SOURCE UNIT WITH PHOSPHOR ELEMENT
First Claim
1. A light source unit comprisinga pump light source for an emission of pump light,a phosphor element for a conversion of said pump light into converted light for further use, which phosphor element comprises at least two phosphor element sections interacting differently with said pump light and being suitably arranged for an irradiation in at least one of a simultaneous and a selective manner by said pump light, anda deflecting unit for deflecting at least a part of said pump light for varying said irradiation by altering a distribution of said pump light incident on said phosphor element with respect to said phosphor element sections in order to vary spectral properties of said converted light.
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Accused Products
Abstract
The invention concerns a light source unit of tunable spectral properties, having a pump light source and a phosphor element for a conversion of pump light into converted light intended for illuminating a target, wherein the phosphor element has at least two phosphor element sections interacting differently with pump light, and wherein the light source unit further comprises a deflecting unit, such as a zoom lens or a variable diffraction grating, for deflecting the pump light so as to vary a distribution of pump light incident onto the phosphor element with respect to the different phosphor element sections, in order to vary spectral properties of the combined converted light beam emanating from the light source unit.
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Citations
22 Claims
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1. A light source unit comprising
a pump light source for an emission of pump light, a phosphor element for a conversion of said pump light into converted light for further use, which phosphor element comprises at least two phosphor element sections interacting differently with said pump light and being suitably arranged for an irradiation in at least one of a simultaneous and a selective manner by said pump light, and a deflecting unit for deflecting at least a part of said pump light for varying said irradiation by altering a distribution of said pump light incident on said phosphor element with respect to said phosphor element sections in order to vary spectral properties of said converted light.
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17. A surgical illumination system for illuminating surgical operating field comprising:
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a pump light source for an emission of pump light, a phosphor element for a conversion of said pump light into converted light for further use, which phosphor element comprises at least two phosphor element sections interacting differently with said pump light and being suitably arranged for an irradiation in at least one of a simultaneous and a selective manner by said pump light, and a deflecting unit for deflecting at least a part of said pump light for varying said irradiation by altering a distribution of said pump light incident on said phosphor element with respect to said phosphor element sections in order to vary spectral properties of said converted light.
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18. A moving head spotlight, comprising:
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a pump light source for an emission of pump light, a phosphor element for a conversion of said pump light into converted light for further use, which phosphor element comprises at least two phosphor element sections interacting differently with said pump light and being suitably arranged for an irradiation in at least one of a simultaneous and a selective manner by said pump light, and a deflecting unit for deflecting at least a part of said pump light for varying said irradiation by altering a distribution of said pump light incident on said phosphor element with respect to said phosphor element sections in order to vary spectral properties of said converted light.
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19. A projection system, comprising:
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a pump light source for an emission of pump light, a phosphor element for a conversion of said pump light into converted light for further use, which phosphor element comprises at least two phosphor element sections interacting differently with said pump light and being suitably arranged for an irradiation in at least one of a simultaneous and a selective manner by said pump light, and a deflecting unit for deflecting at least a part of said pump light for varying said irradiation by altering a distribution of said pump light incident on said phosphor element with respect to said phosphor element sections in order to vary spectral properties of said converted light.
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20. A fibre-optical illumination system, comprising:
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a pump light source for an emission of pump light, a phosphor element for a conversion of said pump light into converted light for further use, which phosphor element comprises at least two phosphor element sections interacting differently with said pump light and being suitably arranged for an irradiation in at least one of a simultaneous and a selective manner by said pump light, and a deflecting unit for deflecting at least a part of said pump light for varying said irradiation by altering a distribution of said pump light incident on said phosphor element with respect to said phosphor element sections in order to vary spectral properties of said converted light.
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22. (canceled)
Specification