Patent ID: 6741044
Filing Date: 2004-05-25
Classification: H05B

Abstract:
A lamp lighting controlling apparatus applied to a light emitting unit having a lamp for emitting light on a light exposure surface, a shutter provided on an optical path between the lamp and the light exposure surface, a shutter mechanism that opens the shutter when the shutter mechanism receives a shutter opening command and closes the shutter when the shutter mechanism receives a shutter closing command, an accumulated light amount measuring unit in which accumulated light amount is measured, the lamp lighting controlling apparatus comprising:a lamp lighting power source for supplying power to the lamp; and a controller in which based on output of the accumulate light amount measuring unit, the shutter mechanism and the lamp lighting power source is controlled, wherein the controller sends the shutter opening command to the shutter mechanism while the lamp is turned on so that light is emitted on the light exposure surface, the controller sends a lamp turning off command to the lamp lighting power source when the accumulated light amount measured by the accumulated light amount measuring unit reaches a predetermined value, so that emission of the light is stopped, and the controller sends the shutter closing command to the shutter mechanism, and the controller sends a lamp relighting command to the lamp lighting power source after the shutter is closed and while relighting of the lamp is possible.