Light and light sensor

Abstract

A system of LED-based lights comprises first and second LED-based light having respective first and second electrical connectors configured for engagement with first and second conventional fluorescent fixtures, first and second LEDs configured to produce light in an area when the first and second electrical connectors are engaged with the first and second fixtures and first and second controllers electrically coupled to the first and second LEDs; and one or more sensors operable to detect a brightness level in the area and output respectively one or more signals indicative of the brightness level, wherein: the first and second controllers are configured to control an amount of power provided to the respective first and second LEDs at least partially based on a signal to adjust the light produced in the area towards a desired brightness level.

What is claimed: 
     
         1 . A system of LED-based lights, comprising:
 a first LED-based light having a first electrical connector configured for engagement with a first conventional fluorescent fixture, a first LED configured to produce light in an area when the first electrical connector is engaged with the first fixture and a first controller electrically coupled to the first LED;   a second LED-based light having a second electrical connector configured for engagement with a second conventional fluorescent fixture, a second LED configured to produce light in the area when the second electrical connector is engaged with the second fixture and a second controller electrically coupled to the second LED; and   one or more sensors operable to detect a brightness level in the area and output respectively one or more signals indicative of the brightness level, wherein:   the first and second controllers are configured to control an amount of power provided to the respective first and second LEDs at least partially based on a signal to adjust the light produced in the area towards a desired brightness level.