KR0123094B1 - Optical pick-up system - Google Patents

Optical pick-up system

Info

Publication number
KR0123094B1
KR0123094B1 KR94010432A KR19940010432A KR0123094B1 KR 0123094 B1 KR0123094 B1 KR 0123094B1 KR 94010432 A KR94010432 A KR 94010432A KR 19940010432 A KR19940010432 A KR 19940010432A KR 0123094 B1 KR0123094 B1 KR 0123094B1
Authority
KR
South Korea
Prior art keywords
hologram device
laser beam
optical
reflects
transmits
Prior art date
Application number
KR94010432A
Other languages
Korean (ko)
Other versions
KR950034117A (en
Inventor
Yang-Oh Choe
Original Assignee
Daewoo 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 Daewoo Electronics Co Ltd filed Critical Daewoo Electronics Co Ltd
Priority to KR94010432A priority Critical patent/KR0123094B1/en
Publication of KR950034117A publication Critical patent/KR950034117A/en
Application granted granted Critical
Publication of KR0123094B1 publication Critical patent/KR0123094B1/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
    • G11B7/1353—Diffractive elements, e.g. holograms or gratings
    • 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
    • G11B7/125—Optical beam sources therefor, e.g. laser control circuitry specially adapted for optical storage devices; Modulators, e.g. means for controlling the size or intensity of optical spots or optical traces
    • G11B7/127—Lasers; Multiple laser arrays
    • G11B7/1275—Two or more lasers having different wavelengths
    • 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
    • G11B7/1395—Beam splitters or combiners

Landscapes

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

Abstract

a first and a second hologram device which generate laser beam of different wavelength in sequence and are installed vertically with each other; a beam splitter which is located on the optical path of the first and the second hologram device, and reflects or transmits the laser beam of different wavelength, and reflects or transmits the beam reflected from each recording surface of an optical disc towards the first and the second hologram device; a first and a second reflection film total-transmitting the laser beam generated from the first hologram device and total-reflecting the laser beam generated from the second hologram device; and a focusing means focusing the optical beam transmitting the beam splitter on each record surface of the optical disc.
KR94010432A 1994-05-13 1994-05-13 Optical pick-up system KR0123094B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR94010432A KR0123094B1 (en) 1994-05-13 1994-05-13 Optical pick-up system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR94010432A KR0123094B1 (en) 1994-05-13 1994-05-13 Optical pick-up system

Publications (2)

Publication Number Publication Date
KR950034117A KR950034117A (en) 1995-12-26
KR0123094B1 true KR0123094B1 (en) 1997-11-12

Family

ID=19382979

Family Applications (1)

Application Number Title Priority Date Filing Date
KR94010432A KR0123094B1 (en) 1994-05-13 1994-05-13 Optical pick-up system

Country Status (1)

Country Link
KR (1) KR0123094B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015065078A1 (en) 2013-10-31 2015-05-07 타이코에이엠피(유) Sensing block and battery package including same

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6256283B1 (en) 1996-10-01 2001-07-03 Matsushita Electric Industrial Co., Ltd. Optical pickup having a common light beam path for passing either of a plurality of kinds of light beams
KR100238074B1 (en) * 1997-01-20 2000-02-01 윤종용 Optical pickup for dvd and cd-r

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015065078A1 (en) 2013-10-31 2015-05-07 타이코에이엠피(유) Sensing block and battery package including same

Also Published As

Publication number Publication date
KR950034117A (en) 1995-12-26

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Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 20090901

Year of fee payment: 13

LAPS Lapse due to unpaid annual fee