METHOD AND APPARATUS FOR CORRECTING OUTPUT LIGHT-AMOUNTS OF SPATIAL LIGHT MODULATOR, IMAGE RECORDING APPARATUS AND IMAGE RECORDING METHOD

摘要

PROBLEM TO BE SOLVED: To provide an appropriate image recording by obtaining an appropriate target ON voltage to keep output light-amounts from a plurality of light modulation elements constant in a spatial light modulator having the light modulation elements of which the moving reflection face and the fixed reflection face have different heights in a non-sagged state.

SOLUTION: In each light modulator element, the maximum light-amount I1 when an output light-amount first becomes maximum from when the moving ribbons start to sag and the maximum light-amount voltage becoming a displacement amount (P1) at the maximum light-amount are obtained and the minimum of a plurality of maximum light-amounts is set as a target ON light-amount It. Since a voltage (corresponding to a displacement amount Pt1) between the minimum light-amount voltage and the maximum light-amount voltage at a displacement amount P2 when an output light-amount first becomes minimum from when the moving ribbons start to sag is obtained as a target ON-voltage for the target ON light-amount It, it is thereby possible to prevent moving distance of the moving ribbons among ON/OFF from largely differing among the light modulator elements and achieve an appropriate image recording.

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