Illumination devices using natural light LEDs

摘要

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.

主权项

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.