Illumination apparatus, imaging apparatus and irradiation method for an imaging apparatus comprising light emitting diodes which are duty-driven during an imaging period of a frame period

An illumination apparatus for taking a moving picture comprising a plurality of frames and for irradiating an auxiliary light onto a photo-object from a light source comprising a plurality of light emitting diodes, said illumination apparatus comprising:

• drive means for duty-driving said light emitting diodes during imaging periods of frame periods, each frame period comprising only one imaging period,
• wherein said drive means duty-drives one light emitting diode of said plurality of light emitting diodes during the imaging period of a given frame period, and sequentially switches said light emitting diodes to be driven every imaging period of different frame periods.

An irradiation method for taking a moving picture comprising a plurality of frames and for irradiating an auxiliary light onto a photo-object from a light source comprising a plurality of light emitting diodes, said method comprising:

• duty-driving said light emitting diodes during imaging periods of frame periods, each frame period comprising only one imaging period,
• wherein one light emitting diode of said plurality of light emitting diodes is duty-driven during the imaging period of a given frame period, and said plurality of light emitting diodes are sequentially switched to be driven every imaging period of different frame periods.

A computer-readable recording medium having a computer readable program stored thereon for a computer of an imaging apparatus for taking a moving picture comprising a plurality of frames, and for irradiating an auxiliary light onto a photo-object from a light source comprising a plurality of light emitting diodes, said program being executable by said computer to perform functions comprising:

• duty-driving said light emitting diodes during imaging periods of frame periods, each frame period comprising only one imaging period,
• wherein one light emitting diode of said plurality of light emitting diodes is duty-driven during the imaging period of a given frame period, and said plurality of light emitting diodes are sequentially switched to be driven every imaging period of different frame periods.