JPS59207034A - 光学系ピツクアツプ - Google Patents
光学系ピツクアツプInfo
- Publication number
- JPS59207034A JPS59207034A JP58080613A JP8061383A JPS59207034A JP S59207034 A JPS59207034 A JP S59207034A JP 58080613 A JP58080613 A JP 58080613A JP 8061383 A JP8061383 A JP 8061383A JP S59207034 A JPS59207034 A JP S59207034A
- Authority
- JP
- Japan
- Prior art keywords
- light
- light receiving
- returned
- error signal
- luminous flux
- 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 title claims description 41
- 230000004907 flux Effects 0.000 claims abstract description 14
- 230000005534 acoustic noise Effects 0.000 abstract description 7
- 239000010410 layer Substances 0.000 description 11
- 238000001514 detection method Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 239000004065 semiconductor Substances 0.000 description 6
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000010287 polarization Effects 0.000 description 3
- 210000001747 pupil Anatomy 0.000 description 3
- 239000004925 Acrylic resin Substances 0.000 description 2
- 229920000178 Acrylic resin Polymers 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 229920003217 poly(methylsilsesquioxane) Polymers 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Automatic Focus Adjustment (AREA)
- Optical Recording Or Reproduction (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58080613A JPS59207034A (ja) | 1983-05-09 | 1983-05-09 | 光学系ピツクアツプ |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58080613A JPS59207034A (ja) | 1983-05-09 | 1983-05-09 | 光学系ピツクアツプ |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59207034A true JPS59207034A (ja) | 1984-11-24 |
| JPH0430090B2 JPH0430090B2 (enrdf_load_stackoverflow) | 1992-05-20 |
Family
ID=13723181
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58080613A Granted JPS59207034A (ja) | 1983-05-09 | 1983-05-09 | 光学系ピツクアツプ |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59207034A (enrdf_load_stackoverflow) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0221431A (ja) * | 1988-07-08 | 1990-01-24 | Fujitsu Ltd | 光ヘッド信号検知方法と光検知器 |
-
1983
- 1983-05-09 JP JP58080613A patent/JPS59207034A/ja active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0221431A (ja) * | 1988-07-08 | 1990-01-24 | Fujitsu Ltd | 光ヘッド信号検知方法と光検知器 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0430090B2 (enrdf_load_stackoverflow) | 1992-05-20 |
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