Device for recording information on a record carrier having a radiation sensitive layer.

摘要

In an optical recording device a record carrier (4) is scanned with an intensity-modulated write beam (13) to form an information pattern of optically detectable marks (8) on the record carrier (4). By means of a verification beam (13), which trails the write beam (14) at a fixed distance, the recorded information is read immediately after recording. The write beam (13) and the verification beam (14) are produced by the same radiation source (10) whose intensity is modulated in conformity with the information to be recorded. In order to eliminate the effect of this modulation in the read signal (Vl) obtained by means of the verification beam (14) a dividing circuit (51) divides said read signal (VI) by a signal (Vn) which is indicative of the instantaneous intensity of the radiation generated by the radiation source (10).