Abstract: A flash device includes at least one light emitting unit is attachable to a plurality of connection portions. A shielding portion shields the connection portion without an attached light emitting unit. A capacitor accumulates an electric charges and is charged by a charging circuit. A control circuit includes judges both (1) whether or not all the plurality of connection portions are shielded and (2) whether or not the light emitting unit is attached to at least one of the plurality of connection portions, and permits the capacitor to be charged if both all the connection portions are shielded and the light emitting unit is attached to at least one of the plurality of connection portions.

Abstract: A flash device includes at least one light emitting unit. At least one light emitting unit is attachable to a plurality of connection portions. A shielding portion shields the connection portion to which the light emitting unit is not attached. A capacitor accumulates an electric charges. A charging circuit charges the capacitor. A control circuit includes a first judgment section to judge whether or not all the plurality of connection portions are shielded and a second judgment section to judge whether or not the light emitting unit is attached to at least one of the plurality of connection portions, and permits an electric charges accumulation operation into the capacitor in a case where the first judgment section judges that all the connection portions are shielded and the second judgment section judges that the light emitting unit is attached to at least one of the plurality of connection portions.

Abstract: A strobe device according to the present invention includes: a main capacitor; and step-up means including at least one step-up capacitor, the at least one step-up capacitor being rapidly charged via a flash discharge tube in an ionization state, a charged voltage of the at least one step-up capacitor being superimposed on a charged voltage of the main capacitor and applied across the flash discharge tube at least via an insulated gate bipolar transistor and a restriction resistor coupled in series with the flash discharge tube.