INTELLIGENT SOLID STATE LIGHTING
First Claim
1. A lighting system, comprising:
- an optical integrating cavity having a reflective interior surface, at least a portion of which exhibits a diffuse reflectivity, and having an optical aperture for allowing emission of reflected light from within the interior of the optical integrating cavity into a region to facilitate a humanly perceptible lighting application for the system;
at least one solid state light emitting element for emitting visible light, each solid state light emitting element being coupled to supply visible light to enter the optical integrating cavity in such a manner that substantially all light emitted from each solid state light emitting element reflects diffusely at least once within the interior of the optical integrating cavity before emission through the optical aperture toward the region;
a detector for detecting electromagnetic energy from the region of a wavelength at east substantially absent from a spectrum of the reflected light; and
a controller for controlling an amount of visible light supplied to the cavity by the at least one solid state light emitting element,wherein the controller receives a detection signal from the detector.
0 Assignments
0 Petitions
Accused Products
Abstract
A light fixture, using one or more solid state light emitting elements utilizes a diffusely reflect chamber to provide a virtual source of uniform output light, at an aperture or at a downstream optical processing element of the system. Systems disclosed herein also include a detector, which detects electromagnetic energy from the area intended to be illuminated by the system, of a wavelength absent from a spectrum of the combined light system output. A system controller is responsive to the signal from the detector. The controller typically may control one or more aspects of operation of the solid state light emitter(s), such as system ON-OFF state or system output intensity or color. Examples are also discussed that use the detection signal for other purposes, e.g. to capture data that may be carried on electromagnetic energy of the wavelength sensed by the detector.
-
Citations
2 Claims
-
1. A lighting system, comprising:
-
an optical integrating cavity having a reflective interior surface, at least a portion of which exhibits a diffuse reflectivity, and having an optical aperture for allowing emission of reflected light from within the interior of the optical integrating cavity into a region to facilitate a humanly perceptible lighting application for the system; at least one solid state light emitting element for emitting visible light, each solid state light emitting element being coupled to supply visible light to enter the optical integrating cavity in such a manner that substantially all light emitted from each solid state light emitting element reflects diffusely at least once within the interior of the optical integrating cavity before emission through the optical aperture toward the region; a detector for detecting electromagnetic energy from the region of a wavelength at east substantially absent from a spectrum of the reflected light; and a controller for controlling an amount of visible light supplied to the cavity by the at least one solid state light emitting element, wherein the controller receives a detection signal from the detector.
-
-
2-86. -86. (canceled)
Specification