| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a semiconductor laser which can suppress an increase in the number of parts in an electrophotographic device, a deterioration in a picture quality caused by returned light or flare light, and a reduction in a margin to a destruction light output, and which can control a drive current by monitoring main radiation light (exiting light). <P>SOLUTION: The typical arrangement of the semiconductor laser has, in its typical arrangement, a laser chip 54 for emitting a laser beam, a photodiode 57 for receiving a beam La emitted from the laser chip 54, and converting the received beam to a current to monitor the light emission state of the laser chip 54; and a window cap 58 for covering the laser chip 54 and the photodiode 57, provided with a window 59 for cutting the beam La from the laser chip 54. The photodiode 57 is located outside of a passage region of a laser beam Lc passed through the window 59 and at such a position that primary light Ld reflected by the photodiode 57 can be shielded by the window cap 58. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
