JPH0411219Y2 - - Google Patents
Info
- Publication number
- JPH0411219Y2 JPH0411219Y2 JP1984103768U JP10376884U JPH0411219Y2 JP H0411219 Y2 JPH0411219 Y2 JP H0411219Y2 JP 1984103768 U JP1984103768 U JP 1984103768U JP 10376884 U JP10376884 U JP 10376884U JP H0411219 Y2 JPH0411219 Y2 JP H0411219Y2
- Authority
- JP
- Japan
- Prior art keywords
- signal
- optical disk
- objective lens
- separation
- light receiving
- 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
Links
- 230000003287 optical effect Effects 0.000 claims description 59
- 238000000926 separation method Methods 0.000 claims description 14
- 238000001514 detection method Methods 0.000 claims description 11
- 230000002265 prevention Effects 0.000 claims description 8
- 238000013459 approach Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
Landscapes
- Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10376884U JPS6121018U (ja) | 1984-07-11 | 1984-07-11 | 光デイスク損傷防止装置 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10376884U JPS6121018U (ja) | 1984-07-11 | 1984-07-11 | 光デイスク損傷防止装置 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6121018U JPS6121018U (ja) | 1986-02-06 |
| JPH0411219Y2 true JPH0411219Y2 (zh) | 1992-03-19 |
Family
ID=30663140
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10376884U Granted JPS6121018U (ja) | 1984-07-11 | 1984-07-11 | 光デイスク損傷防止装置 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6121018U (zh) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56111136A (en) * | 1980-02-01 | 1981-09-02 | Pioneer Video Corp | Protective device for reader of optical disc player |
-
1984
- 1984-07-11 JP JP10376884U patent/JPS6121018U/ja active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56111136A (en) * | 1980-02-01 | 1981-09-02 | Pioneer Video Corp | Protective device for reader of optical disc player |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6121018U (ja) | 1986-02-06 |
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