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US 2017/0013695 A1Published application
Security lighting fixture
AssigneeHampton Products International Corporation
InventorsKim Kelley, Ben Huang
Life of this patent
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Abstract
A lighting system includes a control unit for controlling brightness level of a light source based on a photosensor output signal and a motion sensor output signal. The control unit may increase the brightness level of the light source as ambient light level decreases, or decreases the brightness level as the ambient light level increases. The control unit may also increase the brightness level to a maximum brightness level when motion is detected.
Claims26
A lighting system, comprising:
- a light source operatively coupled to a power source;
- a control unit operatively associated with the light source, and comprising:
- a motion sensing device operable to provide a motion sensor output signal in response to a detection of motion;
- a photosensor configured to sense ambient light and to generate a first photosensor output signal indicative of a first ambient light level and a second photosensor output signal indicative of a second ambient light level;
- and
- a processing unit responsive to the motion sensor output signal, the first photosensor output signal, and the second photosensor output signal so as to control illumination of the light source by providing a first trigger signal based on the first photosensor output signal, a second trigger signal based on the second photosensor output signal, and a third trigger signal based on the motion sensor output signal;
- wherein the light source is responsive (a) to the first trigger signal to illuminate at a first brightness level, (b) to the second trigger signal to illuminate at a second brightness level, and (c) to the third trigger signal to illuminate at a third brightness level.
4 more elements
A light fixture, comprising:
- a light source
- a motion sensor configured to detect motion of an object in a vicinity of the light source and to communicate a motion sensor output signal in response to detected motion;
- a photosensor configured to detect ambient light in the vicinity of the light source and to generate a photosensor output signal having a value inversely proportional to an ambient light level;
- and
- a processing unit operatively associated with the light source and configured to operate the light source at a variable brightness level between a first brightness level and a second brightness level in response to the photosensor output signal, and at a fixed brightness level in response to the motion sensor output signal.
2 more elements
A method for controlling illumination of a light source, comprising:
- generating a first photosensor output signal indicative of a first ambient light level, and a second photosensor output signal indicative of a second ambient light level;
- operating the light source to illuminate at a first brightness level in response to the first photosensor output signal, and at a second brightness level in response to the second photosensor output signal;
- generating a motion detection signal in response to the detection of motion in a vicinity of the light source;
- operating the light source to illuminate at a third brightness level greater than the first or second brightness levels for a period of time in response to the motion detection signal;
- operating the light source to illuminate at one of the first and second brightness levels after passage of the period of time.
2 more elements
Dependencies are inferred from the claim text.