| 摘要 |
In a laser output control device for use in an optical information recording and reproducing apparatus which uses output light from a semiconductor laser device (1) to record and reproduce information onto and from an optical information recording medium (9), a light receiving element (19) is provided on the peripheral portion of a laser light emitting window (22) formed in a housing (21) of the semiconductor laser device (1). The peripheral component (5) of forward radiated light of the laser light output from the semiconductor laser device (1) is received by the light receiving element (19), so as to control the output power of the semiconductor laser device (1) in accordance with output of the light receiving element corresponding to the received light. <IMAGE> |
