Cordelia Lighting, Inc.

Peter Chan

Tim E Monroe

Timothy Edward Monroe

James T Serra

A time-controlled security lighting system records the length of nighttime and is capable of automatically adjusting for seasonal nighttime hours. The time duration between the initial nighttime darkness and the light of dawn, as sensed from the prior day by a photocell, is measured and recorded in memory. As the surrounding area becomes dark, the lighting system is activated to provide the illumination for the area. The duration of illumination is determined based on a predetermined fraction of the recorded length of nighttime from the previous night. The control system can adjust the duration of illumination according the recorded nighttime durations from the previous night. The control system can also adjust the level of illumination based on the signals from a motion detector, where the lights are set at a higher brightness for a predetermined amount of time upon detection of motion.

Nighttime-controlled lighting system

A light fixture has motion detection circuitry enclosed within a motion detector housing. The motion detector housing contains at least one thermal detector such as a passive infrared sensor, the sensor having a detection angle. At least one adjustable blind is housed within the housing adjacent to the infrared sensor, and the blind is adjustable to block and limit the detection angle of the sensor. The blind may be directly connected to a knob on a control panel that allows the user to alter the angle of the blind. Two or more blinds may be used on the interior of the housing, to increase adjustability of the detection angle.

Growing community of inventors

Hong Kong, China

Peter Chan