Optical scanning device, light intensity adjustment method thereof, and computer program product

A light intensity adjustment method implemented in an optical scanning device that includes a light source, a light source driving unit for driving the light source, and a light intensity detecting unit for detecting light intensity of the light source, the light intensity adjustment method comprising:

• determining, based on the presence or absence of a change in a predetermined imaging condition, whether or not it is necessary to adjust the light intensity emitted from the light source;
• determining whether or not the light intensity emitted from the light source detected by the light intensity detecting unit is at a predetermined light intensity;
• and
• amplifying, when it is determined at the determining the necessity of light intensity adjustment that the light intensity emitted from the light source needs to be adjusted, the light intensity emitted from the light source with an amplification factor that is set according to the imaging condition to adjust a driving current of the light source driving unit and to thereby adjust the light intensity emitted from the light source, which is determined at the determining the light intensity, to the predetermined light intensity.

A computer program product comprising a non-transitory computer-readable medium including a computer program for controlling an optical scanning device that include a light source, a light source driving unit for driving the light source, and a light intensity detecting unit for detecting an amount of light of the light source, wherein the computer program causes a computer to execute:

• determining, based on the presence or absence of a change in a predetermined imaging condition, whether or not it is necessary to adjust the light intensity emitted from the light source;
• determining whether or not the light intensity emitted from the light source detected by the light intensity detecting unit is at a predetermined light intensity;
• and
• amplifying, when it is determined at the determining the necessity of light intensity adjustment that the light intensity emitted from the light source needs to be adjusted, the light intensity emitted from the light source with an amplification factor that is set according to the imaging condition to adjust a driving current of the light source driving unit and to thereby adjust the light intensity emitted from the light source, which is determined at the determining the light intensity, to the predetermined light intensity.