Illumination device having a dichroic mirror
First Claim
1. An illumination device comprising in series:
- a fluorescing radiation source;
a light selective filter relatively transmissive of fluorescing radiation and relatively reflective of light;
a light source;
a fluorescing radiation selective filter relatively transmissive of light and relatively reflective of fluorescing radiation.
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Accused Products
Abstract
An illumination device is provided, which includes, in series, a fluorescing radiation source, a light selective filter, and a light source. The light selective filter is relatively transmissive of fluorescing radiation and relatively reflective of light. The light source is preferably a fluorescable phosphor. The illumination device further includes in series after the light source, a fluorescing radiation selective filter which is relatively transmissive of light and relatively reflective of fluorescing radiation. The illumination device may be one of several specific devices, such as a fluorescent lamp assembly, a flat panel display backlight assembly, or a white light-emitting diode assembly.
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Citations
30 Claims
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1. An illumination device comprising in series:
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a fluorescing radiation source; a light selective filter relatively transmissive of fluorescing radiation and relatively reflective of light; a light source; a fluorescing radiation selective filter relatively transmissive of light and relatively reflective of fluorescing radiation. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An illumination device comprising in series:
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a fluorescing radiation source; a light source; and a fluorescing radiation selective filter relatively transmissive of light and relatively reflective of fluorescing radiation. - View Dependent Claims (13, 14, 15)
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16. A fluorescent lamp assembly comprising in series:
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an ultraviolet radiation source; a light selective filter relatively transmissive of ultraviolet radiation and relatively reflective of light; a phosphor fluorescable by ultraviolet radiation to emit light; and an ultraviolet radiation selective filter relatively transmissive of light and relatively reflective of ultraviolet radiation. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23)
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24. A method for enhancing the luminous output of an illumination device comprising:
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outwardly emitting an outward-emitted fluorescing radiation from a fluorescing radiation source; propagating said outward-emitted fluorescing radiation through a light selective filter relatively transmissive of fluorescing radiation and relatively reflective of light; fluorescing a light-emitting composition with said outward-emitted fluorescing radiation, thereby emitting an outward-emitted light from said light-emitting composition in a first direction away from said light selective filter and an inward-emitted light from said light-emitting composition in a second direction toward said light selective filter; reflecting said inward-emitted light off of said light selective filter to propagate a reflected inward-emitted light in said first direction; and propagating said reflected inward-emitted light in said first direction through said light-emitting composition. - View Dependent Claims (25, 26, 27, 28, 29)
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30. A method for enhancing the luminous output of an illumination device comprising:
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outwardly emitting an outward-emitted ultraviolet radiation from an ultraviolet radiation source; propagating said outward-emitted ultraviolet radiation through a light selective filter relatively transmissive of ultraviolet radiation and relatively reflective of light; fluorescing a light-emitting composition with said outward-emitted ultraviolet radiation, thereby emitting an outward-emitted light from said light-emitting composition in a first direction away from said light selective filter and an inward-emitted light from said light-emitting composition in a second direction toward said light selective filter; reflecting said inward-emitted light off of said light selective filter to propagate a reflected inward-emitted light in said first direction; and propagating said reflected inward-emitted light in said first direction through said light-emitting composition.
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Specification