OPTICAL TRANSDUCER Russian patent published in 2002 - IPC

Abstract RU 2179750 C2

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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RU 2 179 750 C2

Authors

Cho Kun-Kho

Joo Dzang-Khoon

Li Jong-Khoon

Li Chul-Voo

Chung Chong-Sam

Dates

2002-02-20Published

1999-04-26Filed