JPH01154527U - - Google Patents
Info
- Publication number
- JPH01154527U JPH01154527U JP4900588U JP4900588U JPH01154527U JP H01154527 U JPH01154527 U JP H01154527U JP 4900588 U JP4900588 U JP 4900588U JP 4900588 U JP4900588 U JP 4900588U JP H01154527 U JPH01154527 U JP H01154527U
- Authority
- JP
- Japan
- Prior art keywords
- optical disk
- reflected light
- recording surface
- written
- 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.)
- Pending
Links
- 230000003287 optical effect Effects 0.000 claims description 8
- 230000000903 blocking effect Effects 0.000 claims 1
- 230000001678 irradiating effect Effects 0.000 claims 1
- 238000011144 upstream manufacturing Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 1
Landscapes
- Optical Recording Or Reproduction (AREA)
- Optical Head (AREA)
Description
第１図および第２図は本考案の光デイスク装置
の一実施例を示す構成図、第３図は従来の光デイ
スク装置の一例を示す構成図である。
１……光デイスク、２……スピンドルモータ、
３……レーザ光源、４……集光レンズ、５……ビ
ームスプリツタ、６……対物レンズ、７……受光
素子、８……信号検出回路、９……シヤツタ機構
。
FIGS. 1 and 2 are block diagrams showing an embodiment of the optical disk device of the present invention, and FIG. 3 is a block diagram showing an example of a conventional optical disk device. 1... Optical disk, 2... Spindle motor,
3... Laser light source, 4... Condensing lens, 5... Beam splitter, 6... Objective lens, 7... Light receiving element, 8... Signal detection circuit, 9... Shutter mechanism.
Claims (1)
イスクに信号を書き込む書込みモードと光デイス
クの記録面により反射された反射光を利用して光
デイスクに書き込まれた信号を読み出す再生モー
ドとを有する光デイスク装置において、前記反射
光を受光する受光素子の前段に書込みモード時に
おける反射光を遮断するシヤツタ機構を配置して
なる光デイスク装置。 It has a write mode in which a signal is written on the optical disk by irradiating the recording surface of the optical disk with a laser beam, and a reproduction mode in which the signal written on the optical disk is read out using reflected light reflected by the recording surface of the optical disk. An optical disc device, wherein a shutter mechanism for blocking reflected light during a write mode is disposed upstream of a light-receiving element that receives the reflected light.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4900588U JPH01154527U (en) | 1988-04-12 | 1988-04-12 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4900588U JPH01154527U (en) | 1988-04-12 | 1988-04-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01154527U true JPH01154527U (en) | 1989-10-24 |
Family
ID=31275127
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4900588U Pending JPH01154527U (en) | 1988-04-12 | 1988-04-12 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01154527U (en) |
-
1988
- 1988-04-12 JP JP4900588U patent/JPH01154527U/ja active Pending
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