Optical pickup and optical information storage medium system using the same
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United States of America Patent
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Jan 7, 2014
Grant Date -
Nov 8, 2012
app pub date -
May 3, 2012
filing date -
May 6, 2011
priority date (Note) -
In Force
status (Latency Note)
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Abstract
An optical pick-up is provided. The optical pick-up includes a light source, a first objective lens configured to focus light emitted from the light source on a high-density optical information storage medium, a photo-detector configured to detect a signal by receiving light reflected from the high-density optical information storage medium, an optical-path changer configured to convert a travel path of incident light to allow the light emitted from the light source to proceed toward the high-density optical information storage medium, and to allow the light reflected from the high-density optical information storage medium to proceed toward the photo-detector, and a blocking device disposed in an optical path of signal light reflected from a target reproducing/recording layer of the high-density optical information storage medium, passes through the first objective lens, and proceeds toward the photo-detector.
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