JPH0416684U - - Google Patents
Info
- Publication number
- JPH0416684U JPH0416684U JP1990029219U JP2921990U JPH0416684U JP H0416684 U JPH0416684 U JP H0416684U JP 1990029219 U JP1990029219 U JP 1990029219U JP 2921990 U JP2921990 U JP 2921990U JP H0416684 U JPH0416684 U JP H0416684U
- Authority
- JP
- Japan
- Prior art keywords
- optical disk
- diffraction grating
- recording area
- pattern
- signal
- 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
- 230000003287 optical effect Effects 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims 1
- 230000001678 irradiating effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Landscapes
- Optical Record Carriers And Manufacture Thereof (AREA)
- Optical Recording Or Reproduction (AREA)
Description
第１図は、本考案の光デイスクの一実施例を説
明するためのもので、Ａ図はデイスク全体の平面
図、Ｂ図は一部の断面図、第２図は、読取装置の
一実施例を説明するための概略構成図、第３図は
、本考案による光デイスクの他の実施例を説明す
るためのもので、Ａ図はデイスク全体の平面図、
Ｂ図は一部の拡大図である。
１……デイスク外周、２……中心穴、３……プ
ログラム記録領域、４……回折格子パターン、５
……基板裏面、６……反射膜、７……保護膜、２
１……光デイスク、２２……回折光パターン、２
３……半導体レーザ、２５……位置センサー、２
６……演算回路。
Fig. 1 is for explaining one embodiment of the optical disc of the present invention, Fig. A is a plan view of the entire disc, Fig. B is a sectional view of a part, and Fig. 2 is an embodiment of the reading device. FIG. 3 is a schematic configuration diagram for explaining an example, and FIG. 3 is for explaining another embodiment of the optical disk according to the present invention, and FIG. A is a plan view of the entire disk.
Figure B is a partially enlarged view. 1... Disk outer periphery, 2... Center hole, 3... Program recording area, 4... Diffraction grating pattern, 5
... Back side of substrate, 6 ... Reflective film, 7 ... Protective film, 2
1... Optical disk, 22... Diffraction light pattern, 2
3... Semiconductor laser, 25... Position sensor, 2
6... Arithmetic circuit.
Claims (1)
を施したことを特徴とする光デイスク。 (2) 光デイスクの信号非記録領域に施された回
折格子となるパターンに対して光線を照射する手
段と、該パターンからの回折光の位置を検知する
検知手段を備えたことを特徴とする光デイスク読
取装置。[Claims for Utility Model Registration] (1) An optical disk characterized in that a pattern serving as a diffraction grating is applied to a non-signal recording area. (2) It is characterized by comprising means for irradiating a light beam onto a pattern serving as a diffraction grating provided in a signal non-recording area of an optical disk, and a detection means for detecting the position of diffracted light from the pattern. Optical disc reader.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990029219U JPH0621108Y2 (en) | 1990-03-22 | 1990-03-22 | Optical disc and reader |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990029219U JPH0621108Y2 (en) | 1990-03-22 | 1990-03-22 | Optical disc and reader |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0416684U true JPH0416684U (en) | 1992-02-12 |
| JPH0621108Y2 JPH0621108Y2 (en) | 1994-06-01 |
Family
ID=31531991
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1990029219U Expired - Fee Related JPH0621108Y2 (en) | 1990-03-22 | 1990-03-22 | Optical disc and reader |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0621108Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994006113A1 (en) * | 1992-08-28 | 1994-03-17 | Toppan Printing Co., Ltd. | Optical information recording medium and method of reading the same information |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56165935A (en) * | 1980-04-21 | 1981-12-19 | Rca Corp | Method and device for reading mark on information record |
| JPS57103109A (en) * | 1980-12-19 | 1982-06-26 | Pioneer Video Corp | Centering device for recording track of recording disk |
| JPS63161427U (en) * | 1987-04-10 | 1988-10-21 |
-
1990
- 1990-03-22 JP JP1990029219U patent/JPH0621108Y2/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56165935A (en) * | 1980-04-21 | 1981-12-19 | Rca Corp | Method and device for reading mark on information record |
| JPS57103109A (en) * | 1980-12-19 | 1982-06-26 | Pioneer Video Corp | Centering device for recording track of recording disk |
| JPS63161427U (en) * | 1987-04-10 | 1988-10-21 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994006113A1 (en) * | 1992-08-28 | 1994-03-17 | Toppan Printing Co., Ltd. | Optical information recording medium and method of reading the same information |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0621108Y2 (en) | 1994-06-01 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |