Abstract: The present invention relates to technology to implement a technique of managing light intensity by each wavelength band for a light apparatus at a low price, whereby the light intensity is suitable for plant growth. In the present invention, cheaper LED blue-chips are incorporated instead of more expensive LED red-chips which are conventionally incorporated in plant factories, which let the production cost of lighting apparatus for plant factories reduced. By applying red-series, green-series and yellow-series phosphors onto the LED blue-chips, light intensity by wavelength band of lighting apparatuses may meet target conditions which are favorable to plant growth. Further, work environment may be improved by reducing eyestrain due to red light-source, and growth efficiency of plants may be enhanced by improving wavelength characteristics of lighting apparatuses.

Abstract: Disclosed is an illumination module array for a plant factory, the array comprising: first blue LED chips; second blue LED chips; a first combination of RGY phosphors applied on the first chip to form a first RGY phosphors-applied LED chip; a second combination of RGY phosphors applied on the second chip to form a second RGY phosphors-applied LED chip, wherein the first combination is configured by combining red, green, and yellow phosphors that light emission from the first RGY phosphors-applied LED chip has a spectrum having a relatively higher intensity in a red wavelength range; wherein the second combination is configured by combining red, green, and yellow phosphors that light emission from the second RGY phosphors-applied LED chip and has a spectrum having a relatively shaper change of an intensity thereof in a blue wavelength range.

Abstract: The present invention relates to technology to implement a technique of managing light intensity by each wavelength band for a light apparatus at a low price, whereby the light intensity is suitable for plant growth. In the present invention, cheaper LED blue-chips are incorporated instead of more expensive LED red-chips which are conventionally incorporated in plant factories, which let the production cost of lighting apparatus for plant factories reduced. By applying red-series, green-series and yellow-series phosphors onto the LED blue-chips, light intensity by wavelength band of lighting apparatuses may meet target conditions which are favorable to plant growth. Further, work environment may be improved by reducing eyestrain due to red light-source, and growth efficiency of plants may be enhanced by improving wavelength characteristics of lighting apparatuses.