Lighting system and luminaire for simulating sunny sky scenes and method for making the lighting system
OwnerWei Liinventor
Life of this patent
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Abstract
An optical element, a lighting system, and a LED luminaire simulate natural sunlight for a space, such as an indoor room. The optical element is disposed in front of a tunable white light source and includes unique microstructures, which when used with the tunable white light source, produces an appearance of the sun. The lighting system comprises the optical element, the tunable white light source assembling the sun and a color tunable light emitting panel assembling a sky. The luminaire incudes the lighting system, a driver, and a controlling device for simulating sunny sky scenes throughout the day.
Claims10
A method for simulating sunny sky scenes throughout a day, the method comprising:
- providing a color-tunable light emitting panel resembling the sky with a light engine;
- producing sunlight with a tunable white light engine positioned relative to the color-tunable light emitting panel;
- providing the appearance of the sun using an optical element coupled to a front of the tunable white light engine,
- wherein the optical element includes an inner region having dots arranged on a first substrate in a random distribution and an outer region in rows and columns separated by constant pitches to form two-dimensional gratings that diffract the light from an array of second LEDs.
A lighting system for simulating sunny sky scenes, the lighting system comprising:
- a color-tunable light emitting panel resembling the sky;
- a tunable white light engine resembling the sun, positioned inside an aperture in the color-tunable light emitting panel;
- and
- an optical element positioned in front of the tunable white light engine, wherein the optical element comprises a microstructure formed on top of or in a transparent substrate or substrates to provide the appearance of the sun,
- wherein the optical element includes an inner region, wherein a plurality of dots are formed on the inner region and are arranged on a transparent substrate or substrates in a random distribution, and an outer region, wherein a plurality of dots are formed on the outer region and are arranged in rows and columns separated by constant pitches, and wherein the plurality dots formed on the outer region form two-dimensional gratings to provide the appearance of the sun.
Dependencies are inferred from the claim text.