One aspect of the present invention can include a laser light output
control apparatus having a plurality of laser light output control
systems including a laser light source capable of receiving supplying of
current via a power supplying path from a power source and irradiating
laser light, a photo-detecting device capable of receiving the light
irradiated from the laser light source and outputting a monitor current
dependent on the amount of light received, a conversion circuit capable
of converting the monitor current into a voltage value, a control circuit
capable of controlling the current supplied to the laser light source
based on the voltage value outputted from the conversion circuit so that
the intensity of laser light irradiated from the laser light source
changes to a predetermined value, the respective conversion circuits of
each said output control system have a fixed resistor and a variable
resistor connected in series to each other, and at least one of the fixed
resistors of each said plurality of laser light output control system has
a resistance value different from the fixed resistors of the other
plurality of laser light output control systems.