| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a characteristic measuring method of light capable of calculating accurately various characteristics of light. Ž<P>SOLUTION: The characteristics of light is calculated by this characteristic measuring method of light having: intensity calculation steps S1, S2 for taking an image of light emitted from a light source whose light intensity distribution is a Gauss distribution, and calculating the intensity of the light at optional coordinates (θx, θy) in the image; fitting steps S3, S4 for fitting a light intensity distribution in the image calculated in the intensity calculation steps S1, S2 based on formula: I(θx, θy)=EXP(aθx<SP>2</SP>+bθy<SP>2</SP>+c+hθxθy+gθx+fθy), and calculating each coefficient a, b, c, f, g and h; and a characteristic calculation step S5 for calculating the characteristics of the light based on each coefficient a-c, f-h calculated in the fitting steps S3, S4. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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