Patent ID: 8817173
Filing Date: 2014-08-26
Classification: G03B,H04N

Abstract:
1. A photographing apparatus comprising: an imaging section accumulating photoelectric current according to a received light amount and outputting an image signal according to this accumulated photoelectric current; an accumulation control section controlling an accumulation operation in the imaging section; a flash light emission section illuminating an object by flash light emission; an emitted light waveform storing section preliminarily storing emitted light waveform information which shows a relationship between a light emission time and a light emission strength in the flash light emission section and represents a light emission strength corresponding to a light emission time; an exposure calculation section calculating an appropriate accumulation time in the imaging section and an appropriate light emission amount corresponding to a required light emission amount in the flash light emission section; an accumulation start timing setting section setting a timing of accumulation start in the imaging section from light emission start in the flash light emission section based on an output of the emitted light waveform storing section and the appropriate light emission amount corresponding to a required light emission amount output by the exposure calculation section; and a flash light emission control section controlling start and stop of the light emission in the flash light emission section, wherein the accumulation control section instructs the flash light emission control section to start flash light emission and causes the imaging section to start the accumulation based on an output by the accumulation start timing setting section, and the flash light emission control section causes the flash light emission to be started in response to the flash light emission start instruction from the accumulation control section and causes the light emission of the flash light emission section to be stopped based on the appropriate light emission amount output by the exposure calculation section, wherein the flash light emission control section includes a light emission amount measuring section measuring a light emission amount of the flash light emission section and controls the light emission stop based on the appropriate light emission amount output by the exposure calculation section and with reference to an output of the light emission amount measuring section, and wherein the light emission amount measuring section starts to measure the light emission amount in the flash light emission section from the accumulation start in the imaging section and outputs a light emission stop signal to the flash light emission section when the light emission amount reaches the appropriate light emission amount output by the exposure calculation section.