JPH0430645B2 - - Google Patents
Info
- Publication number
- JPH0430645B2 JPH0430645B2 JP59251382A JP25138284A JPH0430645B2 JP H0430645 B2 JPH0430645 B2 JP H0430645B2 JP 59251382 A JP59251382 A JP 59251382A JP 25138284 A JP25138284 A JP 25138284A JP H0430645 B2 JPH0430645 B2 JP H0430645B2
- Authority
- JP
- Japan
- Prior art keywords
- light
- recording
- information
- disk
- lens
- 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.)
- Expired - Lifetime
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
-
- 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
- G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
- G11B7/26—Apparatus or processes specially adapted for the manufacture of record carriers
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Thermal Transfer Or Thermal Recording In General (AREA)
- Optical Record Carriers And Manufacture Thereof (AREA)
- Optical Recording Or Reproduction (AREA)
- Manufacturing Optical Record Carriers (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明はビデオデイスク、デイジタルオーデイ
オデイスク等の光記録円盤、特にその原盤とその
記録装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to optical recording discs such as video discs and digital audio discs, and particularly to master discs thereof and recording devices thereof.
円盤に光学的に情報を記録する場合の情報記録
層として種々の材料が検討されている。斯かる材
料として金属、金属と酸化物の複合体、半導体、
有機物等を用い、その熱作用等でピツトを形成し
たり、反射率を変化させたりする場合、レーザ光
等の情報を記録する記録光がその情報記録層で反
射されるため、記録の状態をモニタすることが可
能である。しかしながら斯かる材料の多くは、情
報を正確に記録する点において、ホトレジストに
代表される感光性樹脂等に劣つている。そこで商
業ペースで円盤を大量に製造する場合の情報記録
層としては、殆どの場合ホトレジストが使用され
る。
Various materials are being considered as an information recording layer when optically recording information on a disk. Such materials include metals, metal-oxide composites, semiconductors,
When using organic materials to form pits or change reflectance due to their thermal effects, recording light such as laser light that records information is reflected by the information recording layer, so the recording state cannot be changed. It is possible to monitor. However, many of these materials are inferior to photosensitive resins such as photoresists in terms of accurately recording information. Therefore, in most cases, photoresist is used as the information recording layer when discs are manufactured in large quantities at a commercial pace.
しかしながらホトレジストは微細なピツトでも
正確に転写できる特徴を有する反面、露光後に現
像処理を必要とし、記録時（マスタリング時）に
おいてはモニタができないという欠点を有してい
る。従つて現像処理終了後の検査を待たなけれ
ば、マスタリングが成功であつたのか、あるいは
失敗であつたのが判明せず、失敗であつたときは
再度同じ時間を掛けてマスタリングをやりなおす
必要があつた。
However, although photoresist has the characteristic of being able to accurately transfer even minute pits, it has the disadvantage that it requires development treatment after exposure and cannot be monitored during recording (mastering). Therefore, unless you wait for the inspection after the development process is completed, it will not be possible to determine whether mastering was a success or a failure, and if it is a failure, you will have to repeat the mastering process over the same amount of time. Ta.
第１図は本発明の光記録円盤とその記録装置を
模式的に表している。円盤１は基板２と基板２の
上に形成された情報記録層３とより構成されてい
る。基板２はガラス、合成樹脂等よりなり、情報
記録層３はホトレジスト等の感光性樹脂と、記録
光が照射されたとき励起され、蛍光（燐光）等の
光を発する発光物質との混合材料により構成され
ている。勿論感光性樹脂自体を発光性を有するも
のとすることができる場合はそれでもよいし、ま
た基板２に発光性物質を混在分散させることもで
きる（例えば蛍光ガラスの如く）。さらに第２図
に示す如く、基板２と情報記録層３との間に発光
物質からなる発光物質４を形成するようにしても
よい。
FIG. 1 schematically represents an optical recording disk and its recording device according to the present invention. The disk 1 is composed of a substrate 2 and an information recording layer 3 formed on the substrate 2. The substrate 2 is made of glass, synthetic resin, etc., and the information recording layer 3 is made of a mixed material of a photosensitive resin such as photoresist and a luminescent substance that is excited when irradiated with recording light and emits light such as fluorescence (phosphorescence). It is configured. Of course, if the photosensitive resin itself can be made luminescent, it may be used, or a luminescent substance can also be mixed and dispersed in the substrate 2 (for example, fluorescent glass). Furthermore, as shown in FIG. 2, a luminescent material 4 made of a luminescent material may be formed between the substrate 2 and the information recording layer 3.
１０は半導体レーザ、アルゴンレーザ等の光源
であり、光源１０より発せられ、記録情報により
変調された記録光は、コリメータレンズ１１、ビ
ームスプリツタ１２、1/4波長板１３、ダイクロ
イツクミラー（２色性反射鏡）１４、対物レンズ
１５を介して円盤１に照射されるようになつてい
る。円盤１により反射された反射光は対物レンズ
１５、ダイクロイツクミラー１４、1/4波長板１
３を透過してビームスプリツタ１２で反射され、
収束レンズ１６、シリンドリカルレンズ１７を介
して受光素子１８上に照射される。１９はダイク
ロイツクミラー１４で反射された発光物質が発し
た光を受光素子２０上に照射する、必要に応じ設
けられる凸レンズである。２１は受光素子２０か
ら信号をモニタするモニタ手段である。 Reference numeral 10 denotes a light source such as a semiconductor laser or an argon laser. Recording light emitted from the light source 10 and modulated by recording information is transmitted through a collimator lens 11, a beam splitter 12, a quarter-wave plate 13, and a dichroic mirror (2). The light is irradiated onto the disk 1 via a chromatic reflector (chromatic reflector) 14 and an objective lens 15. The light reflected by the disk 1 is transmitted through an objective lens 15, a dichroic mirror 14, and a 1/4 wavelength plate 1.
3 and is reflected by the beam splitter 12,
The light is irradiated onto the light receiving element 18 via the converging lens 16 and the cylindrical lens 17. Reference numeral 19 denotes a convex lens provided as necessary, which irradiates light emitted from the luminescent material reflected by the dichroic mirror 14 onto the light receiving element 20. Reference numeral 21 denotes a monitor means for monitoring signals from the light receiving element 20.
しかしてその動作を説明する。記録情報により
変調された光源１０から発せられた記録光は、コ
リメータレンズ１１で略平行光とされ、ビームス
プリツタ１２、1/4波長板１３、ダイクロイツク
ミラー１４を介して対物レンズ１５に入射され、
円盤１の情報記録層３上に収束される。ダイクロ
イツクミラー１４は記録光の波長の光は透過する
が、円盤１の発光物質が発する波長の光は反射す
るようになされている。従つて情報記録層３は記
録情報に対応して露光される。情報記録層３は僅
かではあるが記録光を反射する（但しその反射光
から情報をモニタできる程ではない）。この反射
光は対物レンズ１５、ダイクロイツクミラー１
４、1/4波長板１３を介してビームスプリツタ１
２に入射されるが、1/4波長板１３を往復するた
め偏向方向が入射光の場合に較べ90度変化し、ビ
ームスプリツタ１２で反射される。この反射光は
収束レンズ１６で収束され、シリンドリカルレン
ズ１７を介して受光素子１８上に照射される。シ
リンドリカルレンズ１７により非点収差が与えら
れるので、公知の原理に基いて受光素子１８の出
力を利用して対物レンズ１５を駆動し、フオーカ
ス制御を行うことができる。
The operation will now be explained. Recording light emitted from a light source 10 modulated by recording information is made into approximately parallel light by a collimator lens 11, and enters an objective lens 15 via a beam splitter 12, a quarter-wave plate 13, and a dichroic mirror 14. is,
The light is focused on the information recording layer 3 of the disk 1. The dichroic mirror 14 transmits light having the wavelength of the recording light, but reflects light having the wavelength emitted by the luminescent material of the disk 1. Therefore, the information recording layer 3 is exposed to light corresponding to the recorded information. The information recording layer 3 reflects the recording light, albeit slightly (however, it is not to the extent that information can be monitored from the reflected light). This reflected light passes through the objective lens 15 and the dichroic mirror 1.
4. Beam splitter 1 via 1/4 wavelength plate 13
However, since the light travels back and forth through the quarter-wave plate 13, the polarization direction changes by 90 degrees compared to the case of incident light, and is reflected by the beam splitter 12. This reflected light is converged by a converging lens 16 and irradiated onto a light receiving element 18 via a cylindrical lens 17. Since astigmatism is imparted by the cylindrical lens 17, focus control can be performed by driving the objective lens 15 using the output of the light receiving element 18 based on a known principle.
一方上述した如く、円盤１の記録光が照射され
る部分は発光物質が存在するから、記録光が照射
されると発光物質が励起され、記録光とは異なる
波長（一般にはレーザ光より長い波長）の光が、
実時間あるいは短時間の遅延の後発せられる。そ
の発光時間は例えば10-5乃至10-1の間の所定時間
となるように設定される。また発光物質はピツト
に較べ充分微細に分散されているので、発光領域
は記録光の照射領域と略々対応する。そしてこの
発光物質が発する光はダイクロイツクミラー１４
を透過できず、反射されるので、対物レンズ１
５、ダイクロイツクミラー１４、凸レンズ１９の
経路で受光素子２０上に照射される。従つて受光
素子２０の出力は略々記録情報に対応しており、
受光素子２０の出力の供給を受けているモニタ手
段２１により、記録情報を時間あるいは僅かの時
間遅れでモニタすることができ、例えば光源１０
の記録レベル（エネルギー）の制御、円盤１に形
成されるトラツクのピツチの制御等を行うことが
できる。 On the other hand, as mentioned above, since there is a luminescent substance in the part of the disk 1 that is irradiated with the recording light, when the recording light is irradiated, the luminescent substance is excited and the wavelength is different from that of the recording light (generally, the wavelength is longer than the laser beam). ) light is
Emitted in real time or after a short delay. The light emission time is set to be a predetermined time between 10 -5 and 10 -1 , for example. Furthermore, since the luminescent substance is dispersed more finely than the pits, the luminescent area approximately corresponds to the irradiation area of the recording light. The light emitted by this luminescent material is reflected by the dichroic mirror 14.
cannot pass through and is reflected, so objective lens 1
5. The light is irradiated onto the light receiving element 20 via the dichroic mirror 14 and the convex lens 19. Therefore, the output of the light receiving element 20 approximately corresponds to the recorded information,
Recorded information can be monitored over time or with a slight time delay by the monitor means 21 supplied with the output of the light receiving element 20. For example, when the light source 10
The recording level (energy) of the disc 1 can be controlled, the pitch of the tracks formed on the disc 1, etc. can be controlled.
情報記録層３を露光した後現像してピツトを形
成し、電鋳等により原盤を製作する以後の工程は
従来の場合と同様である。 The subsequent steps of exposing and developing the information recording layer 3 to form pits and producing a master disc by electroforming or the like are the same as in the conventional case.
以上の如く本発明においては、円盤を、記録光
が照射されたとき発光物質が記録光とは異なる波
長の光を発生するように構成し、記録装置にその
光を受光する手段を設けたので、ホトレジスト等
の感光性樹脂を情報記録層の材料としながらマス
タリング時にモニタが可能となる。
As described above, in the present invention, the disc is configured such that the luminescent material generates light of a wavelength different from that of the recording light when it is irradiated with the recording light, and the recording device is provided with a means for receiving the light. , it becomes possible to monitor during mastering while using a photosensitive resin such as photoresist as the material for the information recording layer.
第１図は本発明の光記録円盤とその記録装置の
模式的断面図、第２図はその光記録円盤の他の実
施例の部分断面図である。
１……円盤、２……基板、３……情報記録層、
４……発光物質層、１０……光源、１１……コリ
メータレンズ、１２……ビームスプリツタ、１３
……1/4波長板、１４……ダイクロイツクミラー、
１５……対物レンズ、１６……収束レンズ、１７
……シリンドリカルレンズ、１８，２０……受光
素子、１９……凸レンズ、２１……モニタ手段。
FIG. 1 is a schematic sectional view of an optical recording disk and its recording device according to the present invention, and FIG. 2 is a partial sectional view of another embodiment of the optical recording disk. 1... Disc, 2... Substrate, 3... Information recording layer,
4... Luminescent material layer, 10... Light source, 11... Collimator lens, 12... Beam splitter, 13
...1/4 wavelength plate, 14...dichroic mirror,
15...Objective lens, 16...Convergent lens, 17
... Cylindrical lens, 18, 20 ... Light receiving element, 19 ... Convex lens, 21 ... Monitoring means.
Claims (1)
る光記録円盤に、記録光を照射して情報を記録す
る光記録円盤の記録方法であつて、 記録光の照射を受けた発光性物質から発光され
る光を検出し、記録状態をモニタしながら、情報
の記録を行うことを特徴とする光記録円盤の記録
方法。[Scope of Claims] 1. A recording method for an optical recording disc that records information by irradiating recording light onto an optical recording disc that has a recording layer containing a photosensitive resin and a luminescent substance, comprising: A recording method for an optical recording disk, characterized in that information is recorded while detecting light emitted from a received luminescent substance and monitoring the recording state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59251382A JPS61129753A (en) | 1984-11-28 | 1984-11-28 | Optical recording disc and its recorder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59251382A JPS61129753A (en) | 1984-11-28 | 1984-11-28 | Optical recording disc and its recorder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61129753A JPS61129753A (en) | 1986-06-17 |
| JPH0430645B2 true JPH0430645B2 (en) | 1992-05-22 |
Family
ID=17222002
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59251382A Granted JPS61129753A (en) | 1984-11-28 | 1984-11-28 | Optical recording disc and its recorder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61129753A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07111785B2 (en) | 1990-01-19 | 1995-11-29 | 富士通株式会社 | optical disk |
| JP2507198B2 (en) * | 1991-04-05 | 1996-06-12 | 助男 松本 | Short nipple making tool |
| JP2573458B2 (en) * | 1992-12-04 | 1997-01-22 | 助男 松本 | Short nipple working jig |
| JP3477024B2 (en) * | 1997-02-25 | 2003-12-10 | 株式会社東芝 | Recording medium, recording method, erasing method, reproducing method, recording / reproducing method, reproducing apparatus, and recording / reproducing apparatus |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5124814U (en) * | 1974-08-13 | 1976-02-24 |
-
1984
- 1984-11-28 JP JP59251382A patent/JPS61129753A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61129753A (en) | 1986-06-17 |
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