An optical recording method for irradiating an optical recording medium 10 with a laser beam to form recording marks 48A to 48G. The method includes defining contiguously a virtual recording cell 40 in a displacement direction S on the recording layer 12, setting reference irradiating time with the laser beam to five stages or more, and defining a predetermined waiting time in a neighboring subsequent virtual recording cell 40, corresponding to the length of the reference irradiating time in the preceding virtual recording cell 40. The method also includes setting actual irradiating time by subtracting the waiting time from the reference irradiating time for irradiation of the aforementioned subsequent virtual recording cell 40. The method further includes irradiating with the laser beam during the aforementioned actual irradiating time by delaying the irradiation initiation timing by the waiting time to form at least five types of recording marks 48A to 48G having different sizes, thereby performing multi-level recording of information.

 
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