JPH0338646Y2 - - Google Patents
Info
- Publication number
- JPH0338646Y2 JPH0338646Y2 JP16812885U JP16812885U JPH0338646Y2 JP H0338646 Y2 JPH0338646 Y2 JP H0338646Y2 JP 16812885 U JP16812885 U JP 16812885U JP 16812885 U JP16812885 U JP 16812885U JP H0338646 Y2 JPH0338646 Y2 JP H0338646Y2
- Authority
- JP
- Japan
- Prior art keywords
- optical disk
- displacement
- shielding plate
- light
- amount
- 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 35
- 238000006073 displacement reaction Methods 0.000 claims description 26
- 238000007689 inspection Methods 0.000 claims description 12
- 230000007246 mechanism Effects 0.000 claims description 11
- 238000010586 diagram Methods 0.000 description 4
- 230000035945 sensitivity Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000001678 irradiating effect Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Landscapes
- Optical Recording Or Reproduction (AREA)
- Length Measuring Devices By Optical Means (AREA)
- Optical Transform (AREA)
- Testing Of Optical Devices Or Fibers (AREA)
- Manufacturing Optical Record Carriers (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16812885U JPH0338646Y2 (en:Method) | 1985-10-31 | 1985-10-31 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16812885U JPH0338646Y2 (en:Method) | 1985-10-31 | 1985-10-31 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6276608U JPS6276608U (en:Method) | 1987-05-16 |
| JPH0338646Y2 true JPH0338646Y2 (en:Method) | 1991-08-15 |
Family
ID=31100717
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16812885U Expired JPH0338646Y2 (en:Method) | 1985-10-31 | 1985-10-31 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0338646Y2 (en:Method) |
-
1985
- 1985-10-31 JP JP16812885U patent/JPH0338646Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6276608U (en:Method) | 1987-05-16 |
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