Lighting Device Comprising A Wavelength Conversion Arrangement
First Claim
1. A lighting device for generating light with a wavelength conversion arrangement, comprising;
- an excitation light source, which is configured to emit excitation light;
a wavelength conversion arrangement having at least one wavelength conversion element, which wavelength conversion arrangement is arranged in an excitation light path,wherein the at least one wavelength conversion element is adapted to at least partly convert the excitation light radiated onto the wavelength conversion element from the excitation light source into conversion light and emit the conversion light into the same half-space in which the excitation light is incident on the surface of the wavelength conversion element, andwherein the wavelength conversion arrangement is adapted to reflect the excitation light radiated onto the wavelength conversion arrangement from the excitation light source at least occasionally and at least partly in an unconverted fashion as reflection light;
a first dichroic mirror, which is arranged and adapted to guide the reflection light onto a reflection light path and the conversion light onto a conversion light path, wherein the reflection light path and the conversion light path are at least partly spatially separated; and
a beam combining arrangement, which is configured for combining the reflection light coming from the reflection light path and the conversion light coming from the conversion light path.
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Accused Products
Abstract
A lighting device comprising a phosphor wheel configured such that it temporarily sequentially not only emits the excitation light in a wavelength-converted fashion as conversion light but additionally reflects said excitation light in an unconverted fashion as reflection light. Conversion light and reflection light are guided spatially separately on a conversion light path and reflection light path, respectively, with the aid of a first dichroic mirror and are finally combined with the aid of a second dichroic mirror. In this way, it is possible to combine the reflection light for example as a blue light channel with the conversion light.
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Citations
15 Claims
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1. A lighting device for generating light with a wavelength conversion arrangement, comprising;
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an excitation light source, which is configured to emit excitation light; a wavelength conversion arrangement having at least one wavelength conversion element, which wavelength conversion arrangement is arranged in an excitation light path, wherein the at least one wavelength conversion element is adapted to at least partly convert the excitation light radiated onto the wavelength conversion element from the excitation light source into conversion light and emit the conversion light into the same half-space in which the excitation light is incident on the surface of the wavelength conversion element, and wherein the wavelength conversion arrangement is adapted to reflect the excitation light radiated onto the wavelength conversion arrangement from the excitation light source at least occasionally and at least partly in an unconverted fashion as reflection light; a first dichroic mirror, which is arranged and adapted to guide the reflection light onto a reflection light path and the conversion light onto a conversion light path, wherein the reflection light path and the conversion light path are at least partly spatially separated; and a beam combining arrangement, which is configured for combining the reflection light coming from the reflection light path and the conversion light coming from the conversion light path. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification