Patent ID: 9142591
Filing Date: 2015-09-22
Classification: H01L,H04N

Abstract:
1. A method for measuring an electron multiplication factor in an imaging device with an electron multiplying image pickup device, the method comprising: acquiring a first multiplied image of incident light with a first light amount and a second multiplied image of incident light with a second light amount different from the first light amount at a predetermined electron multiplication factor set in advance; calculating a first luminance average value and a first luminance variance average value of the pixels included in the first multiplied image; calculating a second luminance average value and a second luminance variance average value of the pixels included in the second multiplied image; calculating a conversion factor of the first multiplied image and the second multiplied image based on the first luminance average value, the first luminance variance average value, the second luminance average value and the second luminance variance average value; and obtaining an electron multiplication factor of the first multiplied image and the second multiplied image based on a ratio between a conversion factor at a reference electron multiplication factor and the calculated conversion factor.