JPS6410440A - Optical memory medium - Google Patents
Optical memory mediumInfo
- Publication number
- JPS6410440A JPS6410440A JP62165700A JP16570087A JPS6410440A JP S6410440 A JPS6410440 A JP S6410440A JP 62165700 A JP62165700 A JP 62165700A JP 16570087 A JP16570087 A JP 16570087A JP S6410440 A JPS6410440 A JP S6410440A
- Authority
- JP
- Japan
- Prior art keywords
- thin film
- memory medium
- compd
- bits
- rotatory power
- 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
Landscapes
- Thermal Transfer Or Thermal Recording In General (AREA)
- Optical Record Carriers And Manufacture Thereof (AREA)
Abstract
PURPOSE:To make non-destructive reading out of a recording by using linearly polarized light and rotation of the plane of deflection by using a thin film of a chiral compd. the optically rotatory power of which is changed by photoirradiation as a memory medium, projecting laser on the desired point thereof and recording the bits formed by changing the optical rotatory power thereof. CONSTITUTION:The thin film of the chiral compd. the optically rotatory power of which is changed by photoirradiation is used as the memory medium. 2,2'- dihydroxy-1,1'-binaphtyl which is an optically active material is put as this compd. into a K-cell and is deposited by evaporation on a glass substrate under vacuum evaporation. The laser beam is projected on the thin film formed in such a manner to record the prescribed bits. The desired bits which are thereby formed are read out by rotation of the plane of deflection using the linearly polarized light. The memory medium is made of an org. material to eliminate the contamination, etc., of the medium and to facilitated the formation of the thin film as well as to enable the non-destructive reading out.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62165700A JPH0630964B2 (en) | 1987-07-01 | 1987-07-01 | Optical memory-medium |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62165700A JPH0630964B2 (en) | 1987-07-01 | 1987-07-01 | Optical memory-medium |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6410440A true JPS6410440A (en) | 1989-01-13 |
JPH0630964B2 JPH0630964B2 (en) | 1994-04-27 |
Family
ID=15817389
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62165700A Expired - Lifetime JPH0630964B2 (en) | 1987-07-01 | 1987-07-01 | Optical memory-medium |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0630964B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0418930A2 (en) * | 1989-09-22 | 1991-03-27 | Sanyo Electric Co., Ltd. | Recording medium and reproducing method therefor |
US6027543A (en) * | 1996-06-07 | 2000-02-22 | Shiro Yoshizaki | Method for removing a heavy metal from sludge |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63249691A (en) * | 1987-04-06 | 1988-10-17 | Teijin Ltd | Optical recording medium and optical recording and reproduction methods using said medium |
JPS63259850A (en) * | 1987-04-17 | 1988-10-26 | Nippon Telegr & Teleph Corp <Ntt> | Optical recording method |
-
1987
- 1987-07-01 JP JP62165700A patent/JPH0630964B2/en not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63249691A (en) * | 1987-04-06 | 1988-10-17 | Teijin Ltd | Optical recording medium and optical recording and reproduction methods using said medium |
JPS63259850A (en) * | 1987-04-17 | 1988-10-26 | Nippon Telegr & Teleph Corp <Ntt> | Optical recording method |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0418930A2 (en) * | 1989-09-22 | 1991-03-27 | Sanyo Electric Co., Ltd. | Recording medium and reproducing method therefor |
US6027543A (en) * | 1996-06-07 | 2000-02-22 | Shiro Yoshizaki | Method for removing a heavy metal from sludge |
Also Published As
Publication number | Publication date |
---|---|
JPH0630964B2 (en) | 1994-04-27 |
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