JPS6413117A - Optical modulating method - Google Patents
Optical modulating methodInfo
- Publication number
- JPS6413117A JPS6413117A JP16943587A JP16943587A JPS6413117A JP S6413117 A JPS6413117 A JP S6413117A JP 16943587 A JP16943587 A JP 16943587A JP 16943587 A JP16943587 A JP 16943587A JP S6413117 A JPS6413117 A JP S6413117A
- Authority
- JP
- Japan
- Prior art keywords
- optical modulation
- write
- light
- layer
- 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.)
- Pending
Links
Abstract
PURPOSE:To obtain a optical modulation element having high sensitivity and high density, and also, being excellent in storage and stability, by controlling optical thickness of an optical modulation layer, in the optical modulation element having the optical modulation layer and a reflecting layer. CONSTITUTION:A value of optical thickness of an optical modulation layer is set to an arbitrary value, and a light beam is selected to a state that a reflection is caused by a semipermeable reflecting layer 7, and a multipath reflection is caused between the semipermeable reflecting layer 7 and an electrode and reflecting layer 1. When dyestuff absorbed against wavelength of write light is added into the optical modulation layer, it is absorbed and converted to heat during the multipath reflection. In this state, when a temperature of a heating part is set to above a glass transition point (Tg), and an optical axis of a molecule of the optical modulation layer is varied by applying an electric field at the point concerned, write can be executed. Subsequently, when an erasion light is radiated, and it is set so that the erasion light causes a multipath reflection again at a write part, the write part can be heated again to above Tg by the erasion light. Therefore, when an electric field reverse to the time of write is applied at this point, the recording contents can be erased.
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16943587A JPS6413117A (en) | 1987-07-07 | 1987-07-07 | Optical modulating method |
DE3752080T DE3752080T2 (en) | 1986-12-17 | 1987-12-16 | Device, method and device for optical modulation |
EP92119132A EP0528449B1 (en) | 1986-12-17 | 1987-12-16 | Device, method and apparatus for optical modulation |
US07/133,797 US4995705A (en) | 1986-12-17 | 1987-12-16 | Device, method and apparatus for optical modulation using ferroelectric polymer liquid crystals |
EP87118684A EP0271900B1 (en) | 1986-12-17 | 1987-12-16 | Device, method and apparatus for optical modulation |
DE87118684A DE3788634D1 (en) | 1986-12-17 | 1987-12-16 | Method and device for optical recording. |
DE3788634T DE3788634T4 (en) | 1986-12-17 | 1987-12-16 | Method and device for optical recording. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16943587A JPS6413117A (en) | 1987-07-07 | 1987-07-07 | Optical modulating method |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6413117A true JPS6413117A (en) | 1989-01-18 |
Family
ID=15886547
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16943587A Pending JPS6413117A (en) | 1986-12-17 | 1987-07-07 | Optical modulating method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6413117A (en) |
-
1987
- 1987-07-07 JP JP16943587A patent/JPS6413117A/en active Pending
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