Systems for data reading from optical disks on the basis of diffractive lenses

Grigoriy I. Greisukh; Sergei A. Stepanov

doi:10.1117/12.140375

24 April 1992 Systems for data reading from optical disks on the basis of diffractive lenses

Grigoriy I. Greisukh, Sergei A. Stepanov

Proceedings Volume 1731, Soviet-Chinese Joint Seminar on Holography and Optical Information Processing; (1992) https://doi.org/10.1117/12.140375
Event: Soviet-Chinese Joint Seminar on Holography and Optical Information Processing, 1991, Bishkek, Kirgizstan, Russian Federation

Abstract

Systems for reading data from optical disks are suggested. In these systems a diffractive lens simultaneously executes the functions of a focusing objective and the dispersive element of dynamical autofocusing device. The design of diffractive lens structure is given for two cases. In the first case the objective focusing semiconductor laser emission consists of a single diffractive lens. In the second case, it consists of a diffractive and homogeneous lens with spherical surfaces. When designing the diffractive lens structure, one must consider that semiconductor lasers have a heat instability of emission frequency and emission wavelength spread from one sample to another.

Citation Download Citation

Grigoriy I. Greisukh and Sergei A. Stepanov "Systems for data reading from optical disks on the basis of diffractive lenses", Proc. SPIE 1731, Soviet-Chinese Joint Seminar on Holography and Optical Information Processing, (24 April 1992); https://doi.org/10.1117/12.140375

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