Patent ID: 8737731

Claim:
A method for correcting a lighting device, comprising: sensing light emitted from the lighting device when the lighting device is driven and generating sensing data including RGB values corresponding to the sensed light; converting the sensing data into measured color coordinate values corresponding to color coordinates; calculating differences between the measured color coordinate values corresponding to the sensing data and reference color coordinate values used when the lighting device is driven; and correcting the reference color coordinate values on the basis of the calculated differences; and comparing the differences with predetermined allowances to determine whether or not to perform correction, and performing a delay process for delaying the correction when it is determined that the correction is not to be performed, wherein the color coordinate values are composed of x, y, and z, and the differences include a first difference corresponding to a difference between an x value of the measured color coordinate values corresponding to the sensing data and an x value of the reference color coordinate values, a second difference corresponding to a difference between a y value of the measured color coordinate values corresponding to the sensing data and a y value of the reference color coordinate values, and a third difference corresponding to a difference between a z value of the measured color coordinate values corresponding to the sensing data and a z value of the reference color coordinate values.