MY118337A - An optical system for shaping beam and an optical pickup employing the same. - Google Patents

An optical system for shaping beam and an optical pickup employing the same.

Info

Publication number
MY118337A
MY118337A MYPI98000147A MYPI9800147A MY118337A MY 118337 A MY118337 A MY 118337A MY PI98000147 A MYPI98000147 A MY PI98000147A MY PI9800147 A MYPI9800147 A MY PI9800147A MY 118337 A MY118337 A MY 118337A
Authority
MY
Malaysia
Prior art keywords
light
optical
optical system
plates
light source
Prior art date
Application number
MYPI98000147A
Inventor
Chul-Woo Lee
Pyong-Yong Seong
Tae-Kyung Kim
Original Assignee
Samsung Electronics Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Samsung Electronics Co Ltd filed Critical Samsung Electronics Co Ltd
Publication of MY118337A publication Critical patent/MY118337A/en

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
    • G11B7/135—Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
    • G11B7/1372—Lenses
    • G11B7/1378—Separate aberration correction lenses; Cylindrical lenses to generate astigmatism; Beam expanders
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
    • G02B19/0033—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use
    • G02B19/0085—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with both a detector and a source
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
    • G02B19/0004—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed
    • G02B19/0009—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed having refractive surfaces only
    • G02B19/0014—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed having refractive surfaces only at least one surface having optical power
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
    • G02B19/0033—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use
    • G02B19/0047—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with a light source
    • G02B19/0052—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with a light source the light source comprising a laser diode
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/09—Beam shaping, e.g. changing the cross-sectional area, not otherwise provided for
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/09—Beam shaping, e.g. changing the cross-sectional area, not otherwise provided for
    • G02B27/0938—Using specific optical elements
    • G02B27/095—Refractive optical elements
    • G02B27/0955—Lenses
    • G02B27/0966—Cylindrical lenses
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
    • G11B7/135—Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
    • G11B7/1365—Separate or integrated refractive elements, e.g. wave plates
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
    • G11B7/135—Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
    • G11B7/1398—Means for shaping the cross-section of the beam, e.g. into circular or elliptical cross-section
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S5/00—Semiconductor lasers
    • H01S5/005—Optical components external to the laser cavity, specially adapted therefor, e.g. for homogenisation or merging of the beams or for manipulating laser pulses, e.g. pulse shaping

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • General Physics & Mathematics (AREA)
  • Optical Head (AREA)

Abstract

A BEAM-SHAPING OPTICAL SYSTEM INCLUDES A LIGHT SOURCE (51), A PLURALITY OF PLATES (55, 57), AND A CYLINDRICAL LENS (53) DISPOSED BETWEEN THE LIGHT SOURCE AND THE PLURALITY OF PLATES, WHEREIN THE PLURALITY OF PLATES AND THE CYLINDRICAL LENS HAVE AN OPTICAL FEATURE IN WHICH THE LIGHT OUTPUT FROM THE LIGHT SOURCE IS BEAM-SHAPED TO HAVE A DESIRED SHAPE IN THE CROSS-SECTION OF THE LIGHT BEAM, RESPECTIVELY. AN OPTICAL PICKUP USING THE BEAM-SHAPED LIGHT WHICH IS DIVERGED BY THE OPTICAL SYSTEM CAN OBTAIN CONVERGENCE LIGHT REFLECTED FROM AN OPTICAL STORAGE MEDIUM (61). SINCE THE CONVERGENCE LIGHT TRANSMITTING ONLY ONE PLATE HAS ASTIGMATISM AS IT IS, A SEPARATE LENS IS NOT USED FOR LIGHT DETECTION AND USE A PHOTO DETECTOR (63) ADAPTED FOR EMPLOYING AN ASTIGMATIC METHOD, TO PERFORM A FOCUSSING SERVO. (FIG. 5A, 5B)
MYPI98000147A 1997-01-28 1998-01-14 An optical system for shaping beam and an optical pickup employing the same. MY118337A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019970002498A KR100288967B1 (en) 1997-01-28 1997-01-28 Optical system for beam shaping and optical pickup employing the same

Publications (1)

Publication Number Publication Date
MY118337A true MY118337A (en) 2004-10-30

Family

ID=19495768

Family Applications (1)

Application Number Title Priority Date Filing Date
MYPI98000147A MY118337A (en) 1997-01-28 1998-01-14 An optical system for shaping beam and an optical pickup employing the same.

Country Status (9)

Country Link
JP (1) JPH10208291A (en)
KR (1) KR100288967B1 (en)
CN (1) CN1156722C (en)
DE (1) DE19802389B4 (en)
GB (1) GB2322455B (en)
HK (1) HK1009876A1 (en)
MY (1) MY118337A (en)
NL (1) NL1008116C2 (en)
RU (1) RU2176097C2 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3347676B2 (en) 1998-10-29 2002-11-20 キヤノン株式会社 Illumination device and projection display device using the same
KR20010054955A (en) * 1999-12-08 2001-07-02 구자홍 Optical Pickup Apparatus
DE10117402A1 (en) * 2001-04-06 2002-10-10 Thomson Brandt Gmbh Light beam shaping device converts elliptical beam cross-section into circular beam cross-section by extending shorter elliptical axis and reducing longer elliptical axis
DE10248769B3 (en) * 2002-10-18 2004-07-15 Osram Opto Semiconductors Gmbh Optical device for geometric shaping of light beam profile e.g. for coupling laser radiation emitted by laser diode with input end of optical fibre
US10514154B2 (en) 2012-03-18 2019-12-24 Robe Lighting S.R.O. Multisource beam shaping system
US10551038B2 (en) 2012-03-18 2020-02-04 Robe Lighting S.R.O. Modular multisource beam shaping system
CN103279005B (en) * 2013-05-13 2015-08-19 深圳市绎立锐光科技开发有限公司 LASER Light Source, wavelength convert light source, conjunction radiant and optical projection system
CN104836114B (en) * 2015-05-27 2018-04-06 中国工程物理研究院应用电子学研究所 A kind of fast and slow axis beam quality homogenizer of semiconductor laser
CN112448264A (en) * 2019-09-02 2021-03-05 华信光电科技股份有限公司 Miniature laser line module
CN111939304A (en) * 2020-10-19 2020-11-17 武汉光谷航天三江激光产业技术研究院有限公司 Laser virus killing device based on beam shaping and refraction and reflection control

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1204199A (en) * 1982-02-19 1986-05-06 Shigeo Kubota Optical apparatus
JPS60241013A (en) * 1984-05-16 1985-11-29 Matsushita Electric Ind Co Ltd Optical pickup
EP0310711B1 (en) * 1987-10-05 1993-09-01 Hitachi, Ltd. Optical device with phase-locked diodelaser array
JPH01211332A (en) * 1988-02-19 1989-08-24 Matsushita Electric Ind Co Ltd Optical head
JPH0827968B2 (en) * 1988-08-19 1996-03-21 松下電器産業株式会社 Beam shaping device and optical head device
JPH0289384A (en) * 1988-09-27 1990-03-29 Sony Corp Semiconductor laser device
EP0429243A3 (en) * 1989-11-17 1991-12-27 Minnesota Mining And Manufacturing Company Beam shaping system using diffraction
US5237457A (en) * 1990-10-04 1993-08-17 Asahi Kogaku Kogyo Kabushiki Kaisha Apparatus for adjusting an optical axis including a laser beam source and a beam shaping prism
JPH04287011A (en) * 1991-03-18 1992-10-12 Hitachi Ltd Optical scanner and recording device using the same
US5251060A (en) * 1991-09-30 1993-10-05 Sumitomo Electric Industries, Ltd. Light-source unit

Also Published As

Publication number Publication date
GB2322455A (en) 1998-08-26
GB9707538D0 (en) 1997-06-04
JPH10208291A (en) 1998-08-07
CN1156722C (en) 2004-07-07
KR19980066783A (en) 1998-10-15
HK1009876A1 (en) 1999-06-11
RU2176097C2 (en) 2001-11-20
DE19802389B4 (en) 2005-06-02
NL1008116A1 (en) 1998-07-29
DE19802389A1 (en) 1998-08-20
CN1189669A (en) 1998-08-05
GB2322455B (en) 1999-01-13
NL1008116C2 (en) 2000-07-13
KR100288967B1 (en) 2001-05-02

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