JPH01158639A - Information recording carrier - Google Patents
Information recording carrierInfo
- Publication number
- JPH01158639A JPH01158639A JP62317093A JP31709387A JPH01158639A JP H01158639 A JPH01158639 A JP H01158639A JP 62317093 A JP62317093 A JP 62317093A JP 31709387 A JP31709387 A JP 31709387A JP H01158639 A JPH01158639 A JP H01158639A
- Authority
- JP
- Japan
- Prior art keywords
- hologram
- recording carrier
- information
- information recording
- tracks
- 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
- 238000000034 method Methods 0.000 claims abstract description 4
- 230000003287 optical effect Effects 0.000 claims description 5
- 230000001681 protective effect Effects 0.000 abstract description 4
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 11
- 239000010410 layer Substances 0.000 description 9
- 239000000758 substrate Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 239000002184 metal Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 239000012790 adhesive layer Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 235000008375 Decussocarpus nagi Nutrition 0.000 description 1
- 244000309456 Decussocarpus nagi Species 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
Landscapes
- Diffracting Gratings Or Hologram Optical Elements (AREA)
- Holo Graphy (AREA)
- Optical Record Carriers And Manufacture Thereof (AREA)
- Manufacturing Optical Record Carriers (AREA)
- Credit Cards Or The Like (AREA)
Abstract
Description
【発明の詳細な説明】
（発明の技術分野）
この発明は、ＣＤ、 ＬＶ、光カード等の情報記録担体
に関し、さらに詳しくは、記録情報と共にホログラムが
形成されている情報記録担体に関する。DETAILED DESCRIPTION OF THE INVENTION (Technical Field of the Invention) The present invention relates to an information recording carrier such as a CD, LV, optical card, etc., and more particularly to an information recording carrier on which a hologram is formed together with recorded information.
（技術的背景と解決すべき問題点）
従来、ＣＤ、 ＬＶ、光カード等の情報記録担体にホロ
グラムを形成する場合には情報記録担体とは別にホログ
ラムを形成した基材を製造しておき、そして、この基材
面に接着剤層を層設して上記情報記録担体の表面にラミ
ネート又は転写していた。(Technical background and problems to be solved) Conventionally, when forming a hologram on an information recording carrier such as a CD, LV, or optical card, a base material on which a hologram is formed is manufactured separately from the information recording carrier. Then, an adhesive layer is provided on the surface of this base material, and the adhesive layer is laminated or transferred onto the surface of the information recording carrier.
また、信号記録エリア以外にホログラムを形成していた
ためたとえばＣＤやＬＶの場合、内周部、外周部の極め
て小さな面積にホログラムを形成していた。しかし、こ
のような方法では製造工程か極めて複雑で生産数９歩留
りが悪く、コストも高いとた。Furthermore, since the hologram was formed in areas other than the signal recording area, for example, in the case of CDs and LVs, the hologram was formed in extremely small areas on the inner and outer peripheries. However, with this method, the manufacturing process is extremely complicated, yields are low, and costs are high.
（発明の目的）
この発明は上述のような事情からなされたものであり、
この発明の目的は、情報記録担体の製造時に情報トラッ
クと共にホログラムを同時に形成することにより、製造
工程を簡略化すると共に表面積を有効に使った情報記録
担体を提供することにある。(Object of the invention) This invention was made under the above circumstances,
An object of the present invention is to provide an information recording carrier that simplifies the manufacturing process and makes effective use of its surface area by simultaneously forming a hologram along with an information track during the production of the information recording carrier.
（問題点を解決するための手段）
この発明は、記録情報が記録された情報トラックが所定
の間隔で複数本配列されている再生専用の情報記録担体
に関し、この発明の上記目的は、前記情報トラック間の
表面に物体からの光の波面に相当する干渉縞が凹凸層で
形成されたホログラムを有することで達成される。(Means for Solving the Problems) The present invention relates to a reproduction-only information recording carrier in which a plurality of information tracks on which recorded information is recorded are arranged at predetermined intervals. This is achieved by having a hologram formed of an uneven layer on the surface between the tracks, in which interference fringes corresponding to the wavefront of light from the object are formed.
（発明の作用）
この発明の情報記録担体では、情報トラック及びホログ
ラムの干渉縞を製造時に同時に形成することで、製造工
程を簡略化することができる。また表面積を有効に使っ
た大面積のホログラムを付与することができる。(Function of the Invention) In the information recording carrier of the present invention, the information track and the interference fringes of the hologram are simultaneously formed during manufacturing, thereby simplifying the manufacturing process. Furthermore, it is possible to provide a large-area hologram by effectively using the surface area.
（発明の実施例）
第１図はこの発明の一実施例である情報記録担体１の正
面を示し、第２図はそのＸ−Ｘ断面を示している。(Embodiment of the Invention) FIG. 1 shows the front of an information recording carrier 1 which is an embodiment of the invention, and FIG. 2 shows its XX cross section.
情報記録担体１は扁平な円盤状をしており、記録情報が
光学的に再生されるようになっている。The information recording carrier 1 has a flat disk shape, and recorded information is optically reproduced.
情報記録担体１には第２図のように、ポリカーボネート
等の樹脂の基材４上に画像、音声等の記録情報がスパイ
ラルに配列されたビットで成る情報トラックＡＴと、こ
の情報トラックＡＴ間に物体からの光の波面に相当する
干渉縞が凹凸層で形成されたホログラムの凹凸層ＨＴと
が設けられている。情報トラックＡＴ及びホログラムの
凹凸層ＨＴの表面にはＡＪ２等の金属反射膜３か蒸着又
は、スパッタリングされ、この表面には保護膜２が設け
られでいる。上記情報トラックＡＴ及びホログラムの凹
凸層ＨＴは、第３図のように情報トラックＡＴ間の深さ
Ｈｌ（例えば０．５μ）とホログラムの凹凸層ＨＴの深
さＨ２（例えば０．０５μ）との比が
好ましくは
のようになっている。As shown in FIG. 2, the information recording carrier 1 has an information track AT consisting of bits in which recording information such as images and audio is arranged in a spiral on a resin base material 4 such as polycarbonate, and an information track AT between the information tracks AT. A holographic uneven layer HT is provided in which interference fringes corresponding to the wavefront of light from an object are formed of an uneven layer. A metal reflective film 3 such as AJ2 is deposited or sputtered on the surfaces of the information track AT and the uneven layer HT of the hologram, and a protective film 2 is provided on this surface. As shown in FIG. 3, the information track AT and the uneven layer HT of the hologram have a depth Hl (for example, 0.5μ) between the information tracks AT and a depth H2 (for example, 0.05μ) of the uneven layer HT of the hologram. The ratio is preferably as follows.
次に、この発明の情報記録担体１を使用したコンパクト
ディスクの製法について第４図〜第１θ図を参照して説
明する。Next, a method for manufacturing a compact disc using the information recording carrier 1 of the present invention will be explained with reference to FIGS. 4 to 1θ.
まず、第４図のような平滑なガラス基板１２の表面にレ
ジスト１１を塗布して感光基板１０を製造する。第５図
のようなホログラム光学装置４０を使用して物体４１の
物体光ＬＫ２及び参照光ＬＫＩを感光基板１０のレジス
ト１１面に照射してホログラム干渉縞を形成する。引き
続き、現像せず第６図のように同一感光基板１０のレジ
スト１１面にＣＤフォーマット等の記録情報に従ったビ
ットをレーザ光ＬＫ３で形成した後、現像して第７図の
ような情報トラック訂及びホログラムの凹凸層ＨＴを有
した原版２０を製造した。この原版２０を基に第８図の
ようなスタンパ３０（例えはニッケル製）を製造した後
、ポリカーボネート樹脂を使用し、射出成形機（例えは
名機製作所製Ｍ７０Ａ−ＤＭ ）で射出成形（型締力４
５トン）して第９図のような基材４を製造した。第１０
図のようにこの表面にＡｌ等の金属反射膜３（８００人
厚１を形成した後、第２図のように保護膜２（１０μ厚
）を設けてコンパクトディスク（１２０ｍｍφ、１．２
ｍ厚）を製造した。このコンパクトディスクは明るいホ
ログラムを有すると同時に、ＣＤプレイヤで再生した場
合も市販品のソフトと同質の音質が得られた。また、帯
域幅３０ＫＩＩＺて４４ｄｂの再生Ｃ／Ｎ 、シンボル
エラー率ｌＸｌ０−’で得られることを確認した。First, a photosensitive substrate 10 is manufactured by coating a resist 11 on the surface of a smooth glass substrate 12 as shown in FIG. Using a hologram optical device 40 as shown in FIG. 5, the object light LK2 and reference light LKI of the object 41 are irradiated onto the resist 11 surface of the photosensitive substrate 10 to form hologram interference fringes. Subsequently, without developing, bits according to recording information such as CD format are formed on the resist 11 surface of the same photosensitive substrate 10 using laser beam LK3 as shown in FIG. 6, and then developed to form information tracks as shown in FIG. 7. An original plate 20 having a textured layer HT and a hologram was manufactured. After manufacturing a stamper 30 (for example, made of nickel) as shown in FIG. 8 based on this master plate 20, injection molding (mold Tightening force 4
5 tons) to produce a base material 4 as shown in FIG. 10th
As shown in the figure, after forming a metal reflective film 3 (800 mm thick) such as Al on this surface, a protective film 2 (10 μm thick) is provided as shown in Figure 2, and a compact disc (120 mmφ, 1.2
m thickness) was manufactured. This compact disc had a bright hologram, and at the same time, when played on a CD player, the sound quality was the same as that of commercially available software. It was also confirmed that a reproduced C/N of 44 db with a bandwidth of 30KIIZ and a symbol error rate of lXl0-' can be obtained.
上述では情報記録担体の形状が円盤状のものを例に説明
したか、形状がカード状のものでｂよく、この場合情報
トラック及びホログラムの凹凸層をカード上に平行に配
列するようにすればよい。In the above description, the information recording carrier has been explained using an example in which the shape is a disk, or it may be in the shape of a card. In this case, the information track and the uneven layer of the hologram may be arranged in parallel on the card. good.
（発明の効果）
この発明の情報記録担体によれば、ホログラムを情報ト
ラックと同じ製造工程で同時に形成しているため、製造
工程が簡単な利点がある。又、生産数及び歩留りが向上
し、コストが安価になる利点がある。(Effects of the Invention) According to the information recording carrier of the present invention, since the hologram and the information track are simultaneously formed in the same manufacturing process, there is an advantage that the manufacturing process is simple. Further, there are advantages in that the number of production and yield is improved, and the cost is reduced.
第１図はこの発明の一実施例である情報記録担体の正面
図、第２図はそのＸ−Ｘ断面図、第３図は情報トラック
とホログラムの凹凸層との関係を説明するための図、第
４図〜第１０図は情報記録担体の製法を説明するための
図である。
１・・・情報記録担体、２・・・保護膜、３・・・金属
反射膜、４基材、ｌＯ・・・感光基板、１１・・・レジ
スト、１２・・・ガラス基板、２０・・・原版、３０・
・・スタンパ、４０・・・ホログラム光学装置、４１・
・・物体。
第４ 凪
第５ 図
早６昌FIG. 1 is a front view of an information recording carrier that is an embodiment of the present invention, FIG. 2 is a sectional view taken along line XX, and FIG. 3 is a diagram for explaining the relationship between the information track and the uneven layer of the hologram. , FIG. 4 to FIG. 10 are diagrams for explaining the method of manufacturing the information recording carrier. DESCRIPTION OF SYMBOLS 1... Information recording carrier, 2... Protective film, 3... Metal reflective film, 4 Base material, 1O... Photosensitive substrate, 11... Resist, 12... Glass substrate, 20...・Original version, 30・
... Stamper, 40... Hologram optical device, 41.
··object. 4th Nagi 5th Zuhaya 6masa
Claims (5)
で複数本配列されている再生専用の情報記録担体におい
て、前記情報トラック間の表面に物体からの光の波面に
相当する干渉縞が凹凸層で形成されたホログラムを有し
ていることを特徴とする情報記録担体。(1) In a reproduction-only information recording carrier in which a plurality of information tracks on which recorded information is recorded are arranged at predetermined intervals, interference fringes corresponding to the wavefront of light from an object are uneven on the surface between the information tracks. An information recording carrier comprising a hologram formed of layers.
の凹凸層の深さＨ２との比がＨ１／Ｈ２≧５である特許
請求の範囲第１項に記載の情報記録担体。(2) The information recording carrier according to claim 1, wherein the ratio between the depth H1 between the information tracks and the depth H2 of the uneven layer of the hologram is H1/H2≧5.
請求の範囲第１項に記載の情報記録担体。(3) The information recording carrier according to claim 1, wherein the recorded information is reproduced by an optical method.
情報トラックが当該カード上に平行に配列されている特
許請求の範囲第１項に記載の情報記録担体。(4) The information recording carrier according to claim 1, wherein when the information recording carrier has a card shape, the information tracks are arranged in parallel on the card.
報トラックが当該円盤上にスパイラルに配列されている
特許請求の範囲第１項に記載の情報記録担体。(5) The information recording carrier according to claim 1, wherein when the information recording carrier has a disc shape, the information tracks are arranged spirally on the disc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62317093A JP2522681B2 (en) | 1987-12-15 | 1987-12-15 | Information record carrier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62317093A JP2522681B2 (en) | 1987-12-15 | 1987-12-15 | Information record carrier |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01158639A true JPH01158639A (en) | 1989-06-21 |
| JP2522681B2 JP2522681B2 (en) | 1996-08-07 |
Family
ID=18084357
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62317093A Expired - Lifetime JP2522681B2 (en) | 1987-12-15 | 1987-12-15 | Information record carrier |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2522681B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01153268U (en) * | 1988-04-13 | 1989-10-23 | ||
| JPH07500938A (en) * | 1991-10-19 | 1995-01-26 | アプライド ホログラフィクス ピーエルシー | optical data storage disk |
-
1987
- 1987-12-15 JP JP62317093A patent/JP2522681B2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01153268U (en) * | 1988-04-13 | 1989-10-23 | ||
| JPH07500938A (en) * | 1991-10-19 | 1995-01-26 | アプライド ホログラフィクス ピーエルシー | optical data storage disk |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2522681B2 (en) | 1996-08-07 |
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