Patent ID: 7457536
Filing Date: 2008-11-25
Classification: G03B

Abstract:
1. A flash device comprising: at least one light emitting unit; a plurality of connection portions constituted so that at least one light emitting unit is attachable thereto; a plurality of shielding portions to shield the connection portion to each of which the light emitting unit is not attached; a capacitor which accumulates electric charges to allow the light emitting unit to emit light; a charging circuit which charges the capacitor; and a control circuit including 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, the control circuit permitting electric charges accumulation operation into the capacitor by the charging circuit 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.