Optisches Gerät

The present invention has been made for the purpose of obtaining an optical apparatus which avoids the necessity for changing a control unit for appropriate control of a light source (123) or making a modification to the control unit even when the type and specifications of the optical apparatus are changed, whereby costs for designing the control unit may be reduced. In the case where a comparative table (311) stores therein LEND signal times (TA1 to TA3) and data starting times (TB1 to TB3) respectively corresponding SYNC signal periods (TC1 to TC3) of three apparatuses of different types (M1 to M3), a CPU (209) searches for a SYNC signal period coincident with the measured SYNC signal period (TC) from among the SYNC signal periods (TC1 to TC3) which are stored in the comparative table (311), and executes control of signals for an optical unit (201) by using the obtained LEND signal time and data starting time corresponding to the searched SYNC signal period.