JPS59125727U - 光学式情報ピツクアツプ装置 - Google Patents
光学式情報ピツクアツプ装置Info
- Publication number
- JPS59125727U JPS59125727U JP1983021331U JP2133183U JPS59125727U JP S59125727 U JPS59125727 U JP S59125727U JP 1983021331 U JP1983021331 U JP 1983021331U JP 2133183 U JP2133183 U JP 2133183U JP S59125727 U JPS59125727 U JP S59125727U
- Authority
- JP
- Japan
- Prior art keywords
- pickup device
- light receiving
- optical information
- light
- information pickup
- 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
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
- G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
- G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
- G11B7/0908—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for focusing only
- G11B7/0912—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for focusing only by push-pull method
-
- 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
- G11B7/13—Optical detectors therefor
- G11B7/133—Shape of individual detector 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
- G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
- G11B7/0901—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for track following only
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。
め要約のデータは記録されません。
Description
第1図は本考案の実施例を示す図、第2図は第1図の装
置中の受光素子の受光面を示す図、第3図aないしC及
び第4図aないしCはフォーカスサーボ信号の検出動作
を説明する図、第5図は対物レンズとディスクの相対的
位置の変化に対するフォーカスサーボ信号の変化を示す
図、第6図はトラッキングサーボ信号の検出動作を説明
する図である。 主要部分の符号の説明、1・・・・・・光源、2・・・
・・・ビームスプリッタ、3・・・・・・コリメータレ
ンズ、4・・・・・・対物レンズ、5・・・・・・ディ
スク、6・・・・・・受光素子。
置中の受光素子の受光面を示す図、第3図aないしC及
び第4図aないしCはフォーカスサーボ信号の検出動作
を説明する図、第5図は対物レンズとディスクの相対的
位置の変化に対するフォーカスサーボ信号の変化を示す
図、第6図はトラッキングサーボ信号の検出動作を説明
する図である。 主要部分の符号の説明、1・・・・・・光源、2・・・
・・・ビームスプリッタ、3・・・・・・コリメータレ
ンズ、4・・・・・・対物レンズ、5・・・・・・ディ
スク、6・・・・・・受光素子。
Claims (3)
- (1)所定トラックに沿って設けられた光学的パターン
によって情報を記録した記録媒体から情報を検出するピ
ックアップ装置であって、受光素子と、前記記録媒体に
向けて単一光ビームを照射せしめ前記記録媒体からの反
射ビームを前記受光素子に導く光学系とからなり、前記
受光素子の受光面が互いに隣接する一対の内方受光面と
、前記一対の内方受光面を囲む外方受光面とからなるこ
とを特徴とする光学式情報ピックアップ装置。 - (2)前記内方受光面は円形であることを特徴とする実
用新案登録請求の範囲第1項記載の光学式情報ピックア
ップ装置。 - (3)前記内方受光面の中心を結ぶ直線と反射ビームに
おける前記受光素子上のトラック方向とが互いに略45
度の角度をなしていることを特徴とする実用新案登録請
求の範囲第1項記載の光学式情報ピックアップ装置。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1983021331U JPS59125727U (ja) | 1983-02-15 | 1983-02-15 | 光学式情報ピツクアツプ装置 |
GB08403834A GB2137744B (en) | 1983-02-15 | 1984-02-14 | Optical information pickup apparatus |
US06/580,308 US4633454A (en) | 1983-02-15 | 1984-02-15 | Optical information pickup apparatus |
FR8402311A FR2541029B1 (fr) | 1983-02-15 | 1984-02-15 | Appareil de lecture optique d'informations |
DE19843405433 DE3405433A1 (de) | 1983-02-15 | 1984-02-15 | Optisches abtastgeraet zum abtasten von informationen |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1983021331U JPS59125727U (ja) | 1983-02-15 | 1983-02-15 | 光学式情報ピツクアツプ装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS59125727U true JPS59125727U (ja) | 1984-08-24 |
JPH0320911Y2 JPH0320911Y2 (ja) | 1991-05-07 |
Family
ID=12052150
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1983021331U Granted JPS59125727U (ja) | 1983-02-15 | 1983-02-15 | 光学式情報ピツクアツプ装置 |
Country Status (5)
Country | Link |
---|---|
US (1) | US4633454A (ja) |
JP (1) | JPS59125727U (ja) |
DE (1) | DE3405433A1 (ja) |
FR (1) | FR2541029B1 (ja) |
GB (1) | GB2137744B (ja) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4499569A (en) * | 1982-09-07 | 1985-02-12 | Discovision Associates | Writing beam focus monitor |
GB2175390A (en) * | 1985-05-14 | 1986-11-26 | Coal Ind | Probe for sensing outlines |
JPS63257925A (ja) * | 1987-04-15 | 1988-10-25 | Nippon Coinco:Kk | 光ヘツドの焦点制御信号検出装置 |
JPS63285732A (ja) * | 1987-05-19 | 1988-11-22 | Pioneer Electronic Corp | 光学式ピックアップ装置 |
JP2887273B2 (ja) * | 1987-05-22 | 1999-04-26 | パイオニア株式会社 | 光学式ピックアップ装置 |
US4958245A (en) * | 1988-04-07 | 1990-09-18 | Insite Peripherals, Inc. | Apparatus and method for optical servo control with media having information storage and servo control regions of different reflectivities |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55125417A (en) * | 1979-03-20 | 1980-09-27 | Matsushita Electric Ind Co Ltd | Photodetector |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL7703076A (nl) * | 1977-03-22 | 1978-09-26 | Philips Nv | Inrichting voor het uitlezen van een stralings- reflekterende registratiedrager. |
NL7706753A (nl) * | 1977-03-23 | 1978-12-22 | Philips Nv | Inrichting voor het uitlezen van een optische stralingsreflekterende informatiedrager. |
GB1603596A (en) * | 1977-06-06 | 1981-11-25 | Mca Disco Vision | Optical transducer and focusing system |
JPS55125547A (en) * | 1979-03-19 | 1980-09-27 | Matsushita Electric Ind Co Ltd | Light detecting unit |
US4445209A (en) * | 1979-08-27 | 1984-04-24 | Discovision Associates | Dithered focusing systems |
US4357533A (en) * | 1980-07-14 | 1982-11-02 | Discovision Associates | Focus detector for an optical disc playback system |
JPS57111837A (en) * | 1980-12-27 | 1982-07-12 | Olympus Optical Co Ltd | Signal detecting system of optical information reader |
US4414658A (en) * | 1981-06-12 | 1983-11-08 | Mcdonnell Douglas Corporation | Linear tracking arrangement in a photographic disc type information containing system |
JPS58200440A (ja) * | 1982-05-19 | 1983-11-22 | Sony Corp | 光学的読取装置 |
-
1983
- 1983-02-15 JP JP1983021331U patent/JPS59125727U/ja active Granted
-
1984
- 1984-02-14 GB GB08403834A patent/GB2137744B/en not_active Expired
- 1984-02-15 FR FR8402311A patent/FR2541029B1/fr not_active Expired
- 1984-02-15 DE DE19843405433 patent/DE3405433A1/de active Granted
- 1984-02-15 US US06/580,308 patent/US4633454A/en not_active Expired - Lifetime
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55125417A (en) * | 1979-03-20 | 1980-09-27 | Matsushita Electric Ind Co Ltd | Photodetector |
Also Published As
Publication number | Publication date |
---|---|
US4633454A (en) | 1986-12-30 |
JPH0320911Y2 (ja) | 1991-05-07 |
GB8403834D0 (en) | 1984-03-21 |
DE3405433C2 (ja) | 1987-04-02 |
GB2137744B (en) | 1986-04-23 |
GB2137744A (en) | 1984-10-10 |
FR2541029B1 (fr) | 1987-05-22 |
FR2541029A1 (fr) | 1984-08-17 |
DE3405433A1 (de) | 1984-08-16 |
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