Light emitting diode light source
A light emitting diode light source including a reflective cover and a plurality of light emitting diodes is provided. The reflective cover has an inner surface and an opening for irradiating light. The light emitting diodes are disposed on the inner surface of the reflective cover. The light emitted from the light emitting diodes is incident upon the inner surface of the reflective cover and then reflected toward the opening from the inner surface.
1. A light emitting diode light source, comprising:
a reflective cover, having an inner surface and a light irradiation opening; and
a plurality of light emitting diodes, disposed on the inner surface of the reflective cover and having an orientation opposite to a direction of the light irradiation opening of the reflective cover, wherein the light emitted from the light emitting diodes is incident upon the inner surface and reflected from the inner surface toward the light irradiation opening.
2. The light emitting diode light source of claim 1 , wherein the light emitting diodes are selected from a group of light emitting diodes that emits red light, green light, blue light, white light, cyan light, yellow light, magenta light and some combination of the above colors.
3. The light emitting diode light source of claim 1 , wherein the light emitting diodes are disposed around the inner surface of the reflective cover in the form of a ring.
4. The light emitting diode light source of claim 1 , wherein the light source further includes at least an optical element disposed outside the light irradiation opening of the reflective cover.
5. The light emitting diode light source of claim 4 , wherein the optical element includes a field lens.
6. The light emitting diode light source of claim 1 , wherein the light source further includes a cooling device disposed outside the reflective cover.
7. The light emitting diode light source of claim 1 , wherein the inner surface of the reflective cover further includes a reflective coating layer thereon.
8. The light emitting diode light source of claim 7 , wherein the reflective coating layer includes a mirror coating material.
9. The light emitting diode light source of claim 1 , wherein the material of the reflective cover comprises a metallic material.