FIELD: optical data recording and reproducing systems. SUBSTANCE: transducer has optical module designed for emitting light and recording light flux reflected from record medium as well as solid-state immersion lens inserted between module and record medium. Lens has flat surface facing the data medium and several elliptically curved surfaces of different curvature radii to ensure symmetry relative to center line of its surface taking incident light from module for focusing light beam onto recording surface of data medium. EFFECT: enhanced recording and reproducing density level. 4 cl, 8 dwg
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Authors
Dates
2002-02-20—Published
1999-04-26—Filed