3 January 2005 A new detecting method of radial tilt and plane vibration of disk
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The radial tilt between vertical direction of disc and optical axis of lens in standard DVD traverse, plane vibration and warp of disc are important parameters in production and detection of DVD discs. In this paper, a new dynamic detection method which we call pulse-width method is proposed to detect the radial tilt, plane vibration and warp through analyzing the optical and electrical features of traverse. Based on the method, an apparatus is developed and the experimental results compared with the analysis results verify the validity of the method. The applicability and testing precision are also analyzed.
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Jigang Ru, Jigang Ru, Longfa Pan, Longfa Pan, Jianshe Ma, Jianshe Ma, "A new detecting method of radial tilt and plane vibration of disk", Proc. SPIE 5643, Advances in Optical Data Storage Technology, (3 January 2005); doi: 10.1117/12.576167; https://doi.org/10.1117/12.576167


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