Illumination devices using natural light LEDs
First Claim
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1. An illumination device comprising:
- at least one light emitting diode emitting electromagnetic radiation with a wavelength from about 200 nanometers to about 440 nanometers, the electromagnetic radiation is emitted along a path;
a composition of phosphors coating the at least one light emitting diode comprising a red phosphor, yellow phosphor, a blue phosphor, a green phosphor, an orange phosphor, a violet phosphor, or combinations thereof;
at least one wavelength selection device positioned in the path to selectively permit electromagnetic radiation of a particular range of wavelengths to pass through;
a mirror to change a direction of the path;
at least one lens to diverge the electromagnetic radiation, wherein the at least one wavelength selection device, the mirror, and the at least one lens are disposed in the path; and
a housing wherein the at least one light emitting diode, the at least one wavelength selection device, the mirror, and the at least one lens are attached to and within the housing.
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Abstract
A method and apparatus are disclosed for a LED used in a medical device emitting a wavelength from about 200 nanometers to about 440 nanometers along a path. A composition of phosphors coats the LED to broaden the electromagnetic spectrum from about 200 nanometers to about 780 nanometers. A filter is positioned in the path to selectively permit electromagnetic radiation of a particular range of wavelengths to pass through. The medical device is used to provide a broad spectral source for medical diagnosis.
854 Citations
27 Claims
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1. An illumination device comprising:
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at least one light emitting diode emitting electromagnetic radiation with a wavelength from about 200 nanometers to about 440 nanometers, the electromagnetic radiation is emitted along a path; a composition of phosphors coating the at least one light emitting diode comprising a red phosphor, yellow phosphor, a blue phosphor, a green phosphor, an orange phosphor, a violet phosphor, or combinations thereof; at least one wavelength selection device positioned in the path to selectively permit electromagnetic radiation of a particular range of wavelengths to pass through; a mirror to change a direction of the path; at least one lens to diverge the electromagnetic radiation, wherein the at least one wavelength selection device, the mirror, and the at least one lens are disposed in the path; and a housing wherein the at least one light emitting diode, the at least one wavelength selection device, the mirror, and the at least one lens are attached to and within the housing. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A method of illuminating a specimen comprising:
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emitting electromagnetic radiation along a path with a wavelength from about 200 nanometers to about 440 nanometers using at least one light emitting diode, wherein a composition of phosphors coats the at least one light emitting diode comprising a red phosphor, yellow phosphor, a blue phosphor, a green phosphor, an orange phosphor, a violet phosphor, or combinations thereof; selectively permitting electromagnetic radiation of a particular range of wavelengths to pass through at least one wavelength selection device disposed in the path; changing a direction of the path using a mirror; and diverging the electromagnetic radiation using a lens, wherein the at least one wavelength selection device, the mirror, and the lens are disposed in the path. - View Dependent Claims (19, 20, 21, 22)
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23. A method of producing electromagnetic radiation comprising:
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illuminating a specimen using an illumination device comprising; at least one light emitting diode emitting electromagnetic radiation with a wavelength from about 200 nanometers to about 440 nanometers along a path, a composition of phosphors coating the at least one light emitting diode comprising a red phosphor, yellow phosphor, a blue phosphor, a green phosphor, an orange phosphor, a violet phosphor, or combinations thereof, at least one wavelength selection device positioned in the path to selectively permit the electromagnetic radiation of a particular range of wavelengths to pass through, a mirror to change a direction of the path, a lens to diverge the electromagnetic radiation, wherein the at least one wavelength selection device, the mirror, and the lens are disposed in the path, and a housing wherein the at least one light emitting diode, the at least one wavelength selection device, the mirror, and the lens are attached within the housing; and actuating an adjustment wheel to change the particular range of wavelengths permitted by the at least one wavelength selection device. - View Dependent Claims (24, 25, 26, 27)
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Specification