JPS5756807A - Thin film waveguide type head - Google Patents

Thin film waveguide type head

Info

Publication number
JPS5756807A
JPS5756807A JP55133203A JP13320380A JPS5756807A JP S5756807 A JPS5756807 A JP S5756807A JP 55133203 A JP55133203 A JP 55133203A JP 13320380 A JP13320380 A JP 13320380A JP S5756807 A JPS5756807 A JP S5756807A
Authority
JP
Japan
Prior art keywords
thin film
recording medium
cover member
base plate
film waveguide
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
JP55133203A
Other languages
Japanese (ja)
Other versions
JPH035566B2 (en
Inventor
Hideki Hosoya
Kazuya Matsumoto
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Priority to JP55133203A priority Critical patent/JPS5756807A/en
Publication of JPS5756807A publication Critical patent/JPS5756807A/en
Publication of JPH035566B2 publication Critical patent/JPH035566B2/ja
Granted legal-status Critical Current

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
    • G11B7/002—Recording, reproducing or erasing systems characterised by the shape or form of the carrier
    • G11B7/003—Recording, reproducing or erasing systems characterised by the shape or form of the carrier with webs, filaments or wires, e.g. belts, spooled tapes or films of quasi-infinite extent
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/10—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type
    • G02B6/12—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type of the integrated circuit kind
    • G02B6/12004—Combinations of two or more optical elements
    • 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
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • 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
    • G11B7/123—Integrated head arrangements, e.g. with source and detectors mounted on the same substrate
    • G11B7/124—Integrated head arrangements, e.g. with source and detectors mounted on the same substrate the integrated head arrangements including waveguides
    • G11B7/1245—Integrated head arrangements, e.g. with source and detectors mounted on the same substrate the integrated head arrangements including waveguides the waveguides including means for electro-optical or acousto-optical deflection

Abstract

PURPOSE:To prevent damage of a recording medium, by providing a cover member directly or adjacently on the surface of a thin film waveguide, and chamfering the edge opposed to the recording medium. CONSTITUTION:In a thin film waveguide type head which is provided with a semiocnductor laser 3, a tooth electrode 7 for energizing an ultrasonic surface acoustic wave 8 and thin film lenses 5, 9, on a waveguide 2 on a base plate 1, it is covered with a cover member 19 through a spacer 20 so that dust, etc. do not stick onto its surface. On the other hand, the edge of the base plate 1 and the cover member 19, which are opposed to a recording medium 18 is chamfered or made round lest the sharp edge of the head should damage the recording medium 18. In this regard, it is desirable that the cover member 19 is formed by a material whose friction strength is almost equal to that of the base plate 1.
JP55133203A 1980-09-24 1980-09-24 Thin film waveguide type head Granted JPS5756807A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55133203A JPS5756807A (en) 1980-09-24 1980-09-24 Thin film waveguide type head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55133203A JPS5756807A (en) 1980-09-24 1980-09-24 Thin film waveguide type head

Publications (2)

Publication Number Publication Date
JPS5756807A true JPS5756807A (en) 1982-04-05
JPH035566B2 JPH035566B2 (en) 1991-01-25

Family

ID=15099134

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55133203A Granted JPS5756807A (en) 1980-09-24 1980-09-24 Thin film waveguide type head

Country Status (1)

Country Link
JP (1) JPS5756807A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6171431A (en) * 1984-09-14 1986-04-12 Omron Tateisi Electronics Co Optical information processor
JPS6171432A (en) * 1984-09-14 1986-04-12 Omron Tateisi Electronics Co Optical information processor
JPS6277761A (en) * 1985-09-30 1987-04-09 Fuji Photo Film Co Ltd Optical scanning reader
JPS6331033A (en) * 1986-07-25 1988-02-09 Asahi Glass Co Ltd Optical pick-up
FR2628565A1 (en) * 1988-03-14 1989-09-15 Ici Plc OPTICAL READ / WRITE MEMORY SYSTEM AND APPARATUS FOR READING AND / OR WRITING ON OPTIMALLY DETECTED DATA ON A FLEXIBLE SUPPORT
JPH029187A (en) * 1988-03-03 1990-01-12 American Teleph & Telegr Co <Att> Optoelectronic integrated circuit subassembly
JPH02103744A (en) * 1988-10-12 1990-04-16 Sanyo Electric Co Ltd Optical head device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5017521A (en) * 1973-06-15 1975-02-24
JPS50156311A (en) * 1974-06-04 1975-12-17
JPS5268307A (en) * 1975-12-05 1977-06-07 Olympus Optical Co Ltd Lihgt scanner

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5017521A (en) * 1973-06-15 1975-02-24
JPS50156311A (en) * 1974-06-04 1975-12-17
JPS5268307A (en) * 1975-12-05 1977-06-07 Olympus Optical Co Ltd Lihgt scanner

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6171431A (en) * 1984-09-14 1986-04-12 Omron Tateisi Electronics Co Optical information processor
JPS6171432A (en) * 1984-09-14 1986-04-12 Omron Tateisi Electronics Co Optical information processor
JPS6277761A (en) * 1985-09-30 1987-04-09 Fuji Photo Film Co Ltd Optical scanning reader
JPH0554754B2 (en) * 1985-09-30 1993-08-13 Fuji Photo Film Co Ltd
JPS6331033A (en) * 1986-07-25 1988-02-09 Asahi Glass Co Ltd Optical pick-up
JPH029187A (en) * 1988-03-03 1990-01-12 American Teleph & Telegr Co <Att> Optoelectronic integrated circuit subassembly
FR2628565A1 (en) * 1988-03-14 1989-09-15 Ici Plc OPTICAL READ / WRITE MEMORY SYSTEM AND APPARATUS FOR READING AND / OR WRITING ON OPTIMALLY DETECTED DATA ON A FLEXIBLE SUPPORT
JPH02103744A (en) * 1988-10-12 1990-04-16 Sanyo Electric Co Ltd Optical head device

Also Published As

Publication number Publication date
JPH035566B2 (en) 1991-01-25

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