LED lighting device
AssigneeElumina Technology Incorporation
InventorsYa-Kuang Hsiao, Ching-Chi Shaw
Life of this patent
Estimating the term…
Abstract
9A light emitting diode (LED) lighting device includes a concave mirror and a convex mirror having a diameter less than a diameter of the concave mirror. The convex mirror is positioned to face the concave mirror and is fixed to the concave mirror. An LED array is fixed to the concave mirror between the concave mirror and the convex mirror. The LED array faces the convex mirror such that light emitted by the LED array reflects off of the convex mirror. A power supply is provided for powering the LED array. Light emitted by the LED array is reflected from the convex mirror onto the concave mirror, and then reflected by the concave mirror to exit the lighting device.
Claims11
A lighting device comprising:
- a concave mirror;
- a convex parabolic mirror having a diameter less than a diameter of the concave mirror, the convex mirror positioned to face the concave mirror and fixed to the concave mirror, optical axes of the concave and convex mirrors being substantially collinear;
- a light emitting diode (LED) array fixed to the concave mirror between the concave mirror and the convex mirror, the LED array facing the convex mirror such that light emitted by the LED array reflects off of the convex mirror, at least one LED of the array being away from the optical axis of the concave mirror;
- and
- a power supply for powering the LED array;
- wherein light emitted by the LED array is reflected from the convex mirror onto the concave mirror and reflected by the concave mirror thereby exiting the lighting device.
Dependencies are inferred from the claim text.