Abstract: A detection system includes a chassis, at least three sensors housed in the chassis, and first, second, and third lenses that are coupled to the chassis. The first lens is configured such that radiation from outside the chassis that originates from a direction that is perpendicular to the first lens is received by a first sensor over a first horizontal coverage angle of at least 120 degrees. The second lens is configured such that radiation from outside the chassis that originates from a direction that is perpendicular to the second lens is received by a second sensor over a second horizontal coverage angle of at least 120 degrees. The third lens is configured such that radiation from outside the chassis that originates from a direction that is perpendicular to the third lens is received by a third sensor over a third horizontal coverage angle of at least 120 degrees.

Abstract: A device to control luminosity of a lamp supported by a rapid start ballast, the device including a first terminal and a second terminal configured to be connected in series with the rapid start ballast and the lamp, a current divisor array, in communication with the first terminal and the second terminal, with a plurality of inductors and a commutable element, the commutable element selecting between two current paths employing the plurality of inductors, the commutable element when in a first state selecting a first one of the current paths to provide a higher luminosity setting and when a second state selecting a second one of the current paths to provide a lower luminosity setting, and a transformer in communication with the first terminal and the second terminal configured to provide heating to an electrode of the lamp.

Abstract: The present specification discloses a method and device for automatically calibrating a reference light level for an automated dimmer for electric lights, such as fluorescent lamps. An automatic dimmer, including an automatic calibration device, can be installed in series between an instant-start electronic ballast and a fluorescent lamp. An exemplary method for calibrating a lamp includes blocking or removing all ambient light, turning on the electric light, measuring the light output, and turning off the electric light.

Abstract: The present specification discloses a method and device for automatically calibrating a reference light level for an automated dimmer for electric lights, such as fluorescent lamps. An automatic dimmer, including an automatic calibration device, can be installed in series between an instant-start electronic ballast and a fluorescent lamp. An exemplary method for calibrating a lamp includes blocking or removing all ambient light, turning on the electric light, measuring the light output, and turning off the electric light.