| 摘要 |
PURPOSE: A lighting controller is provided to use an LED lamp for supplementing the luminous intensity of the insufficient wavelength band of a discharge lamp for producing high quality plants. CONSTITUTION: A discharge lamp (200) is installed on the upper side of a case, and emits light by the discharge between two electrodes. An LED lamp (300) is installed on the upper side of the case separately from the discharge lamp, and emits red and blue light. An RGB sensor (400) detects light emitted from the discharge lamp and the LED lamp, and measure the luminous intensity of a specific wavelength band. A controller compares the luminous intensity of the specific wavelength band with the luminous intensity of the preset wavelength band, and controls the LED lamp by the difference with the two luminous intensities. A reflector (500) installed inside the case, and reflects light emitted from the discharge lamp and the LED lamp. The RGB sensor is installed on the upper side of the case and detects light reflected from the reflector. |
