Optical recording apparatus for forming grooves and pits in an optically recordable disc

[2. An apparatus according to claim 1, further comprising light modulating means arranged on said optical path, and thereby a discrete information pattern of said predetermined width is

• also formed.] 3. An apparatus according to claim [1] 11 , wherein said high frequency f.sub.o is given by the following equation,
• f.sub.0 >v/d
• where, v is a relative velocity between the recording beam and the disc due to a rotation of the disc and d indicates a spot size of the recording
• beam. 4. An apparatus according to claim [2,] 12 wherein said drive means drives said light deflecting means so as to reciprocatingly move the recording beam in the radial direction of the disc at the high frequency, multiple exposes the disc by the recording disc due to the movement of the recording beam in the radial direction, reciprocatingly moves the recording beam in the radial direction of the disc at a low frequency, and wobbles said tracking groove having the width wider than the pattern of said predetermined width and said discrete
• information pattern. 5. An apparatus according to claim [2,] 12 wherein said light deflecting means and said light modulating
• means are constructed by one acoustic optical means. 6. An apparatus according to claim 5, further having a lens for converging the beam which
• enters said acoustic optical means.

An optical recording method to form a tracking groove on an optical disc wherein a tracking groove is wobbled in the radial direction of the optical disc, said optical recording method comprising:

• the steps of generating a recording beam from a recording beam generating means, deflecting said recording beam in the radial direction of the optical disc using light deflecting means, said light deflecting means being driven at a high frequency;
• and
• exposing the optical disc with said recording beam which moves in the radial direction of the optical disc;
• whereby the tracking groove has a width which is wider than the spot size of the recording beam which is formed on the optical disc and said tracking groove wobbles at a low frequency.

An optical recording method to form a tracking groove on an optical disc wherein a tracking groove is wobbled in the radial direction of the optical disc, said optical recording method comprising:

• the steps of generating a recording beam from a recording beam generating means, deflecting said recording beam in the radial direction of the optical disc using light deflecting means, said light deflecting means being driven by a driving signal from driving means, the driving signal from said driving means being multiplexed with a first signal and with a second signal, the frequency of said first signal being higher than the frequency of said second signal;
• and exposing the optical disc with said recording beam which moves in the radial direction of the optical disc;
• and
• whereby the tracking groove has a width which is wider than the spot size of the recording beam which is formed on the optical disc and wherein said
• tracking groove wobbles at said second frequency.