Optical pickup device emitting linear polarized light with a...

Details Optical pickup device emitting linear polarized light with a... Optical pickup device emitting linear polarized light with a...

2006-07-18

2006-07-18

Pyo, Kevin (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

C250S201500, C369S013290

Reexamination Certificate

active

07078674

ABSTRACT:
The present invention relates to an optical device which includes a first laser diode, a beam splitter, a first objective lens, a photo-detector, a second laser diode, a wedged plate beam splitter, a second objective lens and a collimator. The present invention deploys two independent transmitting paths. The retrieving paths share the beam splitter and the photo-detector commonly at the returning route.

REFERENCES:
patent: 2002/0088922 (2002-07-01), Schmitz et al.

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