JPH0384919U - - Google Patents
Info
- Publication number
- JPH0384919U JPH0384919U JP14258989U JP14258989U JPH0384919U JP H0384919 U JPH0384919 U JP H0384919U JP 14258989 U JP14258989 U JP 14258989U JP 14258989 U JP14258989 U JP 14258989U JP H0384919 U JPH0384919 U JP H0384919U
- Authority
- JP
- Japan
- Prior art keywords
- optical disk
- laser beam
- aperture
- holder
- spatial filter
- 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 3
- 230000000903 blocking effect Effects 0.000 claims 1
- 238000012544 monitoring process Methods 0.000 claims 1
- 229920002120 photoresistant polymer Polymers 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
- Optical Head (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989142589U JPH0718021Y2 (ja) | 1989-12-09 | 1989-12-09 | 光ディスクの露光装置 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989142589U JPH0718021Y2 (ja) | 1989-12-09 | 1989-12-09 | 光ディスクの露光装置 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0384919U true JPH0384919U (2) | 1991-08-28 |
| JPH0718021Y2 JPH0718021Y2 (ja) | 1995-04-26 |
Family
ID=31689413
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989142589U Expired - Lifetime JPH0718021Y2 (ja) | 1989-12-09 | 1989-12-09 | 光ディスクの露光装置 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0718021Y2 (2) |
-
1989
- 1989-12-09 JP JP1989142589U patent/JPH0718021Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0718021Y2 (ja) | 1995-04-26 |
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