| 摘要 |
PURPOSE:To secure the high output at the outer circumferential side and the high recording density at the inner circumferential side with an optical recording device, by producing the dispersed light or the focused light through a fixed optical system. CONSTITUTION:The objective lenses 2 and 3 serving as the reflecting means are set on a movable member 4 and can move in the radius direction of an optical disk by a traverse means 5. The dispersed light delivered from a semiconductor laser 6a is converted into the dispersed light having a small spreading angle or the focused light by a convex lens 6b. The weak dispersed light is produced when a fixed optical system 6 is fixed at the outer circumferential side of the disk 1. The recording power is increased at the outer circumference of the disk 1 by dispersing the light of the system 6 is dispersed. While the recording density is improved at the inner circumference of the disk 1 for an optical recording device which is suited to the CAV recording. |
