JPS6233659B2 - - Google Patents
Info
- Publication number
- JPS6233659B2 JPS6233659B2 JP10890877A JP10890877A JPS6233659B2 JP S6233659 B2 JPS6233659 B2 JP S6233659B2 JP 10890877 A JP10890877 A JP 10890877A JP 10890877 A JP10890877 A JP 10890877A JP S6233659 B2 JPS6233659 B2 JP S6233659B2
- Authority
- JP
- Japan
- Prior art keywords
- light beam
- light
- disk surface
- image
- astigmatism
- 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
- 201000009310 astigmatism Diseases 0.000 claims description 32
- 230000003287 optical effect Effects 0.000 claims description 29
- 230000004907 flux Effects 0.000 claims description 17
- 238000001514 detection method Methods 0.000 description 14
- 238000010586 diagram Methods 0.000 description 12
- 238000000034 method Methods 0.000 description 10
- 108091008695 photoreceptors Proteins 0.000 description 10
- 238000003384 imaging method Methods 0.000 description 8
- 230000008859 change Effects 0.000 description 4
- 230000004075 alteration Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- GGCZERPQGJTIQP-UHFFFAOYSA-N sodium;9,10-dioxoanthracene-2-sulfonic acid Chemical compound [Na+].C1=CC=C2C(=O)C3=CC(S(=O)(=O)O)=CC=C3C(=O)C2=C1 GGCZERPQGJTIQP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Automatic Focus Adjustment (AREA)
- Holo Graphy (AREA)
- Optical Recording Or Reproduction (AREA)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10890877A JPS5443005A (en) | 1977-09-12 | 1977-09-12 | Method and apparatus for automatic focus controlling |
| US05/940,660 US4223348A (en) | 1977-09-12 | 1978-09-08 | Automatic focussing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10890877A JPS5443005A (en) | 1977-09-12 | 1977-09-12 | Method and apparatus for automatic focus controlling |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1685087A Division JPS62188032A (ja) | 1987-01-27 | 1987-01-27 | 光学的情報読取装置 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5443005A JPS5443005A (en) | 1979-04-05 |
| JPS6233659B2 true JPS6233659B2 (enrdf_load_stackoverflow) | 1987-07-22 |
Family
ID=14496674
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10890877A Granted JPS5443005A (en) | 1977-09-12 | 1977-09-12 | Method and apparatus for automatic focus controlling |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5443005A (enrdf_load_stackoverflow) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60263338A (ja) * | 1984-06-08 | 1985-12-26 | Sony Corp | フォーカス誤差検出装置 |
| JPS6145419A (ja) * | 1984-08-09 | 1986-03-05 | Fujitsu Ltd | 光ピツクアツプ |
| JPH073697B2 (ja) * | 1988-02-26 | 1995-01-18 | 松下電器産業株式会社 | 光ヘッド装置 |
| JP5861469B2 (ja) | 2012-01-23 | 2016-02-16 | 日本電気硝子株式会社 | ガラス管の清浄切断装置と清浄切断方法 |
-
1977
- 1977-09-12 JP JP10890877A patent/JPS5443005A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5443005A (en) | 1979-04-05 |
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