JPH056741B2 - - Google Patents
Info
- Publication number
- JPH056741B2 JPH056741B2 JP58014864A JP1486483A JPH056741B2 JP H056741 B2 JPH056741 B2 JP H056741B2 JP 58014864 A JP58014864 A JP 58014864A JP 1486483 A JP1486483 A JP 1486483A JP H056741 B2 JPH056741 B2 JP H056741B2
- Authority
- JP
- Japan
- Prior art keywords
- light
- signal
- lens
- optical memory
- optical
- 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 - Lifetime
Links
- 230000003287 optical effect Effects 0.000 claims description 22
- 238000001514 detection method Methods 0.000 claims description 6
- 239000000758 substrate Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 description 17
- 230000006870 function Effects 0.000 description 4
- 239000011521 glass Substances 0.000 description 3
- 238000005342 ion exchange Methods 0.000 description 3
- 230000010287 polarization Effects 0.000 description 3
- 239000004065 semiconductor Substances 0.000 description 3
- 238000003491 array Methods 0.000 description 2
- 201000009310 astigmatism Diseases 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 239000002131 composite material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000001259 photo etching Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 230000001360 synchronised effect Effects 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
- G11B7/135—Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
-
- 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
- G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
- G11B7/085—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam into, or out of, its operative position or across tracks, otherwise than during the transducing operation, e.g. for adjustment or preliminary positioning or track change or selection
- G11B7/08547—Arrangements for positioning the light beam only without moving the head, e.g. using static electro-optical elements
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Head (AREA)
- Focusing (AREA)
- Automatic Focus Adjustment (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP58014864A JPS59142758A (ja) | 1983-02-01 | 1983-02-01 | 光学的読み取り装置 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP58014864A JPS59142758A (ja) | 1983-02-01 | 1983-02-01 | 光学的読み取り装置 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5315046A Division JP2580987B2 (ja) | 1993-12-15 | 1993-12-15 | 光学的書き込み読み取り装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS59142758A JPS59142758A (ja) | 1984-08-16 |
JPH056741B2 true JPH056741B2 (US06272168-20010807-M00014.png) | 1993-01-27 |
Family
ID=11872884
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP58014864A Granted JPS59142758A (ja) | 1983-02-01 | 1983-02-01 | 光学的読み取り装置 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS59142758A (US06272168-20010807-M00014.png) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62106322U (US06272168-20010807-M00014.png) * | 1985-12-19 | 1987-07-07 | ||
DE68923833T2 (de) * | 1988-06-20 | 1996-06-13 | Mitsubishi Electric Corp | Optischer Kopf mit Kippkorrekturservomechanismus. |
JP2580987B2 (ja) * | 1993-12-15 | 1997-02-12 | セイコーエプソン株式会社 | 光学的書き込み読み取り装置 |
JP3048912B2 (ja) * | 1996-02-06 | 2000-06-05 | 日本電気株式会社 | 光ヘッド装置 |
KR20060064647A (ko) * | 2003-08-20 | 2006-06-13 | 코닌클리케 필립스 일렉트로닉스 엔.브이. | 광 기록매체 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS53112039A (en) * | 1977-03-09 | 1978-09-30 | Philips Nv | Optical memory for mechanically addressing |
JPS5753702A (en) * | 1980-09-16 | 1982-03-30 | Nippon Sheet Glass Co Ltd | Lens body |
JPS57205833A (en) * | 1981-06-12 | 1982-12-17 | Sony Corp | Optical reproducing device |
-
1983
- 1983-02-01 JP JP58014864A patent/JPS59142758A/ja active Granted
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS53112039A (en) * | 1977-03-09 | 1978-09-30 | Philips Nv | Optical memory for mechanically addressing |
JPS5753702A (en) * | 1980-09-16 | 1982-03-30 | Nippon Sheet Glass Co Ltd | Lens body |
JPS57205833A (en) * | 1981-06-12 | 1982-12-17 | Sony Corp | Optical reproducing device |
Also Published As
Publication number | Publication date |
---|---|
JPS59142758A (ja) | 1984-08-16 |
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