Beam shaping prism and optical pickup employing the same

Dynamic information storage or retrieval – Specific detail of information handling portion of system – Radiation beam modification of or by storage medium

Reexamination Certificate

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C359S837000

Reexamination Certificate

active

07321542

ABSTRACT:
A beam shaping prism used in an optical pickup, the beam shaping prism includes a first prism having an incident surface and a second prism having an inclined surface. Since a beam entering the beam shaping prism makes right angles with a beam emerging therefrom, it is easy to optically arrange and assemble elements.

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Hecht, Eugene, “OPTICS,” Addison-Wesley Publishing Company, Second Edition, pp. 98 and 103, no date.

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