Abstract: A method and apparatus for a horticultural light system for use in a greenhouse where aspects of ambient light in the greenhouse are measured and compared against a prescribed light recipe. A light controller commands a light fixture contained within the greenhouse to augment the ambient light in response to the comparison. Photosynthetic photon flux, light intensity, color temperature and color spectrum among other aspects of light generated by the light fixture are altered by the controller to fill in deficiencies of the ambient light as compared to the prescribed light recipe.

Abstract: A method and apparatus for a horticultural light system for use in a greenhouse where aspects of ambient light in the greenhouse are measured and compared against a prescribed light recipe. A light controller commands a light fixture contained within the greenhouse to augment the ambient light in response to the comparison. Photosynthetic photon flux, light intensity, color temperature and color spectrum among other aspects of light generated by the light fixture are altered by the controller to fill in deficiencies of the ambient light as compared to the prescribed light recipe.

Abstract: A method and apparatus for a horticultural light system for use in a greenhouse where aspects of ambient light in the greenhouse are measured and compared against a prescribed light recipe. A light controller commands a light fixture contained within the greenhouse to augment the ambient light in response to the comparison. Photosynthetic photon flux, light intensity, color temperature and color spectrum among other aspects of light generated by the light fixture are altered by the controller to fill in deficiencies of the ambient light as compared to the prescribed light recipe.

Abstract: A method and apparatus for a horticultural light for use in a horticultural facility that projects either a substantially uniform target illuminance onto a flat surface or an increasing target illuminance onto a flat surface that increases as the beam angle increases with respect to the optical axis. The horticultural light uses a refractor to receive the raw light distribution from one or more LEDs and then distributes an optically varied distribution having a minimized intensity at centerbeam with an increasing beam intensity as the beam width increases.

Abstract: A method and apparatus for a horticultural light system for use in a greenhouse where aspects of ambient light in the greenhouse are measured and compared against a prescribed light recipe. A light controller commands a light fixture contained within the greenhouse to augment the ambient light in response to the comparison. Photosynthetic photon flux, light intensity, color temperature and color spectrum among other aspects of light generated by the light fixture are altered by the controller to fill in deficiencies of the ambient light as compared to the prescribed light recipe.

Abstract: A method and apparatus for a horticultural light for use in a horticultural facility that projects either a substantially uniform target illuminance onto a flat surface or an increasing target illuminance onto a flat surface that increases as the beam angle increases with respect to the optical axis. The horticultural light uses a refractor to receive the raw light distribution from one or more LEDs and then distributes an optically varied distribution having a minimized intensity at centerbeam with an increasing beam intensity as the beam width increases.

Abstract: An indoor horticultural system includes a grow bed and a lighting system arranged in proximity to the grow bed. The lighting system includes lighting fixtures having an optical axis and a light distribution whose intensity increases as the angle of the generated light increases in relation to the optical axis to increase cross-lighting. Alternately, the lighting system includes lighting fixtures mounted at varying angles and with varying beam widths so as to increase cross-lighting. Series connected light fixtures include a master light fixture that employs an intensity controller to control the intensity of light generated by each of the series-connected light fixtures, where the intensity controller derives operational power from an LED string contained within the master light fixture.

Abstract: A method and apparatus for a horticultural light for use in an indoor horticultural facility that produces broad spectrum white light with variable correlated color temperature (CCT) so as to better simulate various aspects of the sun, such as the multiple phases of the sun, aspects of the sun in all four seasons and latitude of the sun. One or more rows of fixed-color LEDs is used to obtain even wider ranges of CCT values, such as the use of red and/or blue LEDs. Even broader spectrums are achieved by utilizing LEDs that emit differing wavelengths within a particular color spectrum, such as a channel of red LEDs that emit two different wavelengths within the red spectrum and/or a channel of blue LEDs that emit two different wavelengths within the blue spectrum. Sensors with feedback control maintains the light within constraints defined by a light prescription database.

Abstract: An indoor horticultural system includes a grow bed and a lighting system arranged in proximity to the grow bed. The lighting system may include lighting fixtures having an optical axis and a light distribution whose intensity increases as the angle of the generated light increases in relation to the optical axis to increase cross-lighting. Alternately, the lighting system may include lighting fixtures mounted at varying angles and with varying beam widths so as to increase cross-lighting. Series connected light fixtures may include a master light fixture that employs an intensity controller to control the intensity of light generated by each of the series-connected light fixtures, where the intensity controller derives operational power from an LED string contained within the master light fixture.

Abstract: A method and apparatus for a horticultural light for use in a horticultural facility that projects a substantially uniform target illuminance onto a flat surface or that projects increasing target illuminance onto a flat surface that increases as the beam angle increases with respect to the optical axis. A lens array of the horticultural light mechanically maintains an optimal separation distance between each LED of the horticultural light and the corresponding lens of the lens array. Each lens of the lens array receives the raw light distribution from the LED and then distributes an optically varied distribution having a nominal centerbeam intensity with an increasing beam intensity as the beam width increases. As the distance to target increases, so does the intensity of the light distribution, which projects a substantially uniform target illuminance, or an increasing target illuminance with increasing angle of incidence, onto a flat surface.

Abstract: A method and apparatus for a horticultural light for use in a horticultural facility that projects a substantially uniform target illuminance onto a flat surface or that projects increasing target illuminance onto a flat surface that increases as the beam angle increases with respect to the optical axis. A lens array of the horticultural light mechanically maintains an optimal separation distance between each LED of the horticultural light and the corresponding lens of the lens array. Each lens of the lens array receives the raw light distribution from the LED and then distributes an optically varied distribution having a nominal centerbeam intensity with an increasing beam intensity as the beam width increases. As the distance to target increases, so does the intensity of the light distribution, which projects a substantially uniform target illuminance, or an increasing target illuminance with increasing angle of incidence, onto a flat surface.