JPH0289624U - - Google Patents
Info
- Publication number
- JPH0289624U JPH0289624U JP16966788U JP16966788U JPH0289624U JP H0289624 U JPH0289624 U JP H0289624U JP 16966788 U JP16966788 U JP 16966788U JP 16966788 U JP16966788 U JP 16966788U JP H0289624 U JPH0289624 U JP H0289624U
- Authority
- JP
- Japan
- Prior art keywords
- pickup device
- transmittance
- optical pickup
- optical
- annular zones
- 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 6
- 238000002834 transmittance Methods 0.000 claims 2
- 238000003384 imaging method Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Optical Head (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16966788U JPH0289624U (en]) | 1988-12-27 | 1988-12-27 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16966788U JPH0289624U (en]) | 1988-12-27 | 1988-12-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0289624U true JPH0289624U (en]) | 1990-07-16 |
Family
ID=31459932
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16966788U Pending JPH0289624U (en]) | 1988-12-27 | 1988-12-27 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0289624U (en]) |
-
1988
- 1988-12-27 JP JP16966788U patent/JPH0289624U/ja active Pending
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