| 摘要 |
PURPOSE: An optical head, an optical component for use therein, a method of manufacturing the same, and an optical disk apparatus are provided to realize an optical head which has two light sources, switched from one to the other by electric device in accordance with the type of an optical disk, which is resistant to vibration, and which can be miniaturized. CONSTITUTION: A dichroic filter comprising: a light-transmitting substrate; the first region provided on a part of the light-transmitting substrate, for allowing passage of the first light beam having a first wavelength and the second light beam having the second wavelength; and a second region surrounding the first region and covered with a dichroic film, for allowing passage of the first light beam and limiting passage of the second light beam.
|
