Investigation of critical-angle focus-error detection

Song Shen; Dongsu Cui; Xiong Qian; Yongming Shu

doi:10.1117/12.150662

13 August 1993 Investigation of critical-angle focus-error detection

Song Shen, Dongsu Cui, Xiong Qian, Yongming Shu

Proceedings Volume 2053, Optical Storage (ISOS '92); (1993) https://doi.org/10.1117/12.150662
Event: Optical Storage: Third International Symposium, 1992, Kunming, Yunnan Province, China

Abstract

A simple and precise mathematical model of critical-angle focus error detection method is proposed in this paper. Factors which affect the focus error signals are analyzed and the curve of focus error signals with different parameters are given. The improvement of optical gain is also discussed.

Citation Download Citation

Song Shen, Dongsu Cui, Xiong Qian, and Yongming Shu "Investigation of critical-angle focus-error detection", Proc. SPIE 2053, Optical Storage (ISOS '92), (13 August 1993); https://doi.org/10.1117/12.150662

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