JPS5545041A - Hologram memory recording method - Google Patents
Hologram memory recording methodInfo
- Publication number
- JPS5545041A JPS5545041A JP11833578A JP11833578A JPS5545041A JP S5545041 A JPS5545041 A JP S5545041A JP 11833578 A JP11833578 A JP 11833578A JP 11833578 A JP11833578 A JP 11833578A JP S5545041 A JPS5545041 A JP S5545041A
- Authority
- JP
- Japan
- Prior art keywords
- holograms
- spacings
- hologram
- recording
- transmittances
- 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
Landscapes
- Holo Graphy (AREA)
Abstract
PURPOSE: To make possible suppression of the reflected components that the 0 order transmitted light at the information reproducing produces in the read lens by blackening the spacings between element holograms through multiple exposure at the hologram recording.
CONSTITUTION: When the rectagular opening 17 of a mask 18 provided immediate before a recording medium 16 is let to be D1×D2, the spacings between element holograms 41, 42... to be vertical direction b1 and horizontal direction b2, and the sizes of element holograms 41, 42... to be vertical a1, horizontal a2, then the abovementioned opening is formed to D1=a1+2b1, D2=a2+2b2. Recording is progressed by providing the overlap of b1, b2 while deviating the recording medium 16 by a1+b1 each in the vertical direction and a2+b2 in the horizontal direction. The holograms are formed in the form that a1×a2 is their effective opening size in the final. Because of this, the respective spacings are recorded doublefold or fourfold and become higher in density, the transmittances of which portions become further smaller as compared to the transmittances of the amplitude hologram portions, thus blackening progresses. As a result, even if a light beam is radiated to the hologram memory plate 25, the 0 order transmitted light receives constant attenuation in the effective opening parts of the holograms.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11833578A JPS5545041A (en) | 1978-09-25 | 1978-09-25 | Hologram memory recording method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11833578A JPS5545041A (en) | 1978-09-25 | 1978-09-25 | Hologram memory recording method |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5545041A true JPS5545041A (en) | 1980-03-29 |
Family
ID=14734111
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11833578A Pending JPS5545041A (en) | 1978-09-25 | 1978-09-25 | Hologram memory recording method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5545041A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS642813U (en) * | 1987-06-18 | 1989-01-10 |
-
1978
- 1978-09-25 JP JP11833578A patent/JPS5545041A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS642813U (en) * | 1987-06-18 | 1989-01-10 | ||
JPH0539122Y2 (en) * | 1987-06-18 | 1993-10-04 |
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