Automatically adjusting task light
OwnerOle Falk Smedinventor
Life of this patent
Estimating the term…
Abstract
A task light that includes a plurality of light emitting diodes (LED's) adapted for providing a variable intensity of emitted light; a light directing member for directing light from the LED's onto a work surface; a control logic, electrically connected to a light intensity selector, an ambient light sensor, and the plurality of LED's and wherein the control logic compares the intensity of ambient light in the area surrounding the work surface with the desired intensity of light to be provided at the work surface and adjusts the supply of electrical power to the LED's so that the total of the variable intensity of emitted light and the intensity of ambient light in the area surrounding the work surface is approximately equal to the desired intensity of light to be provided at the work surface.
Claims9
An LED task light comprising:
- a plurality of light emitting diodes (LEDs) mounted on at least one substrate providing a variable intensity of emitted light;
- a housing for receiving the at least one substrate, said housing having an arm engagement member, said arm engagement member having a pair of circular bearing surfaces with a bore therethrough for receiving a connection to an arm, a 90° bend and a shaft overlying a collar, said shaft being received within the housing;
- a light guide board retained in the housing, wherein the plurality of LEDs are placed in contact with a major edge of the light guide board and a corresponding opposite edge of the light guide board;
- a power supply providing a supply of electrical power to the LEDs;
- a light intensity selector which allows a user to input a desired intensity of light to be provided at the work surface;
- an ambient light sensor which determine an intensity of ambient light in the area surrounding the work surface;
- and
- a control logic, electrically connected to the power supply, the light intensity elector, the ambient light sensor, and the plurality of LEDs and wherein the control logic compares the intensity of ambient light in the area surrounding the work surface with the desired intensity of light to be provided at the work surface and adjusts the supply of electrical power to the LEDs so that the total of the variable intensity of emitted light and the intensity of ambient light in the area surrounding the work surface is equal to the desired intensity of light to be provided at the work surface.
Dependencies are inferred from the claim text.