OPTICAL PICKUP DEVICE AND OPTICAL DISC APPARATUS APPLYING THE SAME

OPTICAL PICKUP DEVICE AND OPTICAL DISC APPARATUS APPLYING THE SAME

PROBLEM TO BE SOLVED: To provide an optical pickup capable of making a circular shape of a light spot with respect to light from a semiconductor laser light source and capable of reducing jitter or crosstalk.SOLUTION: An optical pickup device 100 comprises a polarization plate 59 which is disposed o...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: PARK SOO-HAN, PARK SE-JUN, KO SEIYU, MORISHITA ICHIRO, PARK SEONG-SU, SIN DONG-JIN
Format: Patent
Sprache:eng
Schlagworte:
INFORMATION STORAGE
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER
PHYSICS
Online-Zugang:Volltext bestellen
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
container_end_page
container_issue
container_start_page
container_title
container_volume
creator PARK SOO-HAN
PARK SE-JUN
KO SEIYU
MORISHITA ICHIRO
PARK SEONG-SU
SIN DONG-JIN
description PROBLEM TO BE SOLVED: To provide an optical pickup capable of making a circular shape of a light spot with respect to light from a semiconductor laser light source and capable of reducing jitter or crosstalk.SOLUTION: An optical pickup device 100 comprises a polarization plate 59 which is disposed on an optical path between a semiconductor laser light source 20 and an objective lens 30, which polarizes light outputted from the semiconductor laser light source to elliptically-polarized light, and which is disposed such that a major axis of the elliptically-polarized light is parallel to a major axis of the laser light. The polarization plate has a phase difference such that a light spot with respect to the elliptical laser light has a circular shape, and the phase difference may be more than 1/4 wavelength and equal to or less than 3/10 wavelength. The polarization plate has a phase difference such that a diameter ratio (minor axis/major axis) of the light spot to the elliptical laser light is equal to or greater than 0.9 and equal to or less than 1.
format Patent
fullrecord <record><control><sourceid>epo_EVB</sourceid><recordid>TN_cdi_epo_espacenet_JP2012146384A</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>JP2012146384A</sourcerecordid><originalsourceid>FETCH-epo_espacenet_JP2012146384A3</originalsourceid><addsrcrecordid>eNrjZHDyDwjxdHb0UQjwdPYODVBwcQ3zdHZVcPRzUYDJuHgGOys4BgQ4BjmGhAaDWD6Rnn7uCiEergrBjr6uPAysaYk5xam8UJqbQcnNNcTZQze1ID8-tbggMTk1L7Uk3ivAyMDQyNDEzNjCxNGYKEUANm0rYQ</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>patent</recordtype></control><display><type>patent</type><title>OPTICAL PICKUP DEVICE AND OPTICAL DISC APPARATUS APPLYING THE SAME</title><source>esp@cenet</source><creator>PARK SOO-HAN ; PARK SE-JUN ; KO SEIYU ; MORISHITA ICHIRO ; PARK SEONG-SU ; SIN DONG-JIN</creator><creatorcontrib>PARK SOO-HAN ; PARK SE-JUN ; KO SEIYU ; MORISHITA ICHIRO ; PARK SEONG-SU ; SIN DONG-JIN</creatorcontrib><description>PROBLEM TO BE SOLVED: To provide an optical pickup capable of making a circular shape of a light spot with respect to light from a semiconductor laser light source and capable of reducing jitter or crosstalk.SOLUTION: An optical pickup device 100 comprises a polarization plate 59 which is disposed on an optical path between a semiconductor laser light source 20 and an objective lens 30, which polarizes light outputted from the semiconductor laser light source to elliptically-polarized light, and which is disposed such that a major axis of the elliptically-polarized light is parallel to a major axis of the laser light. The polarization plate has a phase difference such that a light spot with respect to the elliptical laser light has a circular shape, and the phase difference may be more than 1/4 wavelength and equal to or less than 3/10 wavelength. The polarization plate has a phase difference such that a diameter ratio (minor axis/major axis) of the light spot to the elliptical laser light is equal to or greater than 0.9 and equal to or less than 1.</description><language>eng</language><subject>INFORMATION STORAGE ; INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER ; PHYSICS</subject><creationdate>2012</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&amp;date=20120802&amp;DB=EPODOC&amp;CC=JP&amp;NR=2012146384A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,778,883,25551,76302</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&amp;date=20120802&amp;DB=EPODOC&amp;CC=JP&amp;NR=2012146384A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>PARK SOO-HAN</creatorcontrib><creatorcontrib>PARK SE-JUN</creatorcontrib><creatorcontrib>KO SEIYU</creatorcontrib><creatorcontrib>MORISHITA ICHIRO</creatorcontrib><creatorcontrib>PARK SEONG-SU</creatorcontrib><creatorcontrib>SIN DONG-JIN</creatorcontrib><title>OPTICAL PICKUP DEVICE AND OPTICAL DISC APPARATUS APPLYING THE SAME</title><description>PROBLEM TO BE SOLVED: To provide an optical pickup capable of making a circular shape of a light spot with respect to light from a semiconductor laser light source and capable of reducing jitter or crosstalk.SOLUTION: An optical pickup device 100 comprises a polarization plate 59 which is disposed on an optical path between a semiconductor laser light source 20 and an objective lens 30, which polarizes light outputted from the semiconductor laser light source to elliptically-polarized light, and which is disposed such that a major axis of the elliptically-polarized light is parallel to a major axis of the laser light. The polarization plate has a phase difference such that a light spot with respect to the elliptical laser light has a circular shape, and the phase difference may be more than 1/4 wavelength and equal to or less than 3/10 wavelength. The polarization plate has a phase difference such that a diameter ratio (minor axis/major axis) of the light spot to the elliptical laser light is equal to or greater than 0.9 and equal to or less than 1.</description><subject>INFORMATION STORAGE</subject><subject>INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER</subject><subject>PHYSICS</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2012</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZHDyDwjxdHb0UQjwdPYODVBwcQ3zdHZVcPRzUYDJuHgGOys4BgQ4BjmGhAaDWD6Rnn7uCiEergrBjr6uPAysaYk5xam8UJqbQcnNNcTZQze1ID8-tbggMTk1L7Uk3ivAyMDQyNDEzNjCxNGYKEUANm0rYQ</recordid><startdate>20120802</startdate><enddate>20120802</enddate><creator>PARK SOO-HAN</creator><creator>PARK SE-JUN</creator><creator>KO SEIYU</creator><creator>MORISHITA ICHIRO</creator><creator>PARK SEONG-SU</creator><creator>SIN DONG-JIN</creator><scope>EVB</scope></search><sort><creationdate>20120802</creationdate><title>OPTICAL PICKUP DEVICE AND OPTICAL DISC APPARATUS APPLYING THE SAME</title><author>PARK SOO-HAN ; PARK SE-JUN ; KO SEIYU ; MORISHITA ICHIRO ; PARK SEONG-SU ; SIN DONG-JIN</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_JP2012146384A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>2012</creationdate><topic>INFORMATION STORAGE</topic><topic>INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER</topic><topic>PHYSICS</topic><toplevel>online_resources</toplevel><creatorcontrib>PARK SOO-HAN</creatorcontrib><creatorcontrib>PARK SE-JUN</creatorcontrib><creatorcontrib>KO SEIYU</creatorcontrib><creatorcontrib>MORISHITA ICHIRO</creatorcontrib><creatorcontrib>PARK SEONG-SU</creatorcontrib><creatorcontrib>SIN DONG-JIN</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>PARK SOO-HAN</au><au>PARK SE-JUN</au><au>KO SEIYU</au><au>MORISHITA ICHIRO</au><au>PARK SEONG-SU</au><au>SIN DONG-JIN</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>OPTICAL PICKUP DEVICE AND OPTICAL DISC APPARATUS APPLYING THE SAME</title><date>2012-08-02</date><risdate>2012</risdate><abstract>PROBLEM TO BE SOLVED: To provide an optical pickup capable of making a circular shape of a light spot with respect to light from a semiconductor laser light source and capable of reducing jitter or crosstalk.SOLUTION: An optical pickup device 100 comprises a polarization plate 59 which is disposed on an optical path between a semiconductor laser light source 20 and an objective lens 30, which polarizes light outputted from the semiconductor laser light source to elliptically-polarized light, and which is disposed such that a major axis of the elliptically-polarized light is parallel to a major axis of the laser light. The polarization plate has a phase difference such that a light spot with respect to the elliptical laser light has a circular shape, and the phase difference may be more than 1/4 wavelength and equal to or less than 3/10 wavelength. The polarization plate has a phase difference such that a diameter ratio (minor axis/major axis) of the light spot to the elliptical laser light is equal to or greater than 0.9 and equal to or less than 1.</abstract><oa>free_for_read</oa></addata></record>
fulltext fulltext_linktorsrc
identifier
ispartof
issn
language eng
recordid cdi_epo_espacenet_JP2012146384A
source esp@cenet
subjects INFORMATION STORAGE
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER
PHYSICS
title OPTICAL PICKUP DEVICE AND OPTICAL DISC APPARATUS APPLYING THE SAME
url https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-01-15T15%3A05%3A48IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-epo_EVB&rft_val_fmt=info:ofi/fmt:kev:mtx:patent&rft.genre=patent&rft.au=PARK%20SOO-HAN&rft.date=2012-08-02&rft_id=info:doi/&rft_dat=%3Cepo_EVB%3EJP2012146384A%3C/epo_EVB%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_id=info:pmid/&rfr_iscdi=true