JPS5485737A - Diffusion plate device - Google Patents
Diffusion plate deviceInfo
- Publication number
- JPS5485737A JPS5485737A JP15399577A JP15399577A JPS5485737A JP S5485737 A JPS5485737 A JP S5485737A JP 15399577 A JP15399577 A JP 15399577A JP 15399577 A JP15399577 A JP 15399577A JP S5485737 A JPS5485737 A JP S5485737A
- Authority
- JP
- Japan
- Prior art keywords
- meshes
- regions
- considerably
- moire
- corners
- 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
- Optical Elements Other Than Lenses (AREA)
- Holo Graphy (AREA)
Abstract
PURPOSE: To considerably suppress moire with object pattern information produced when sampling meshes are used by forming discontinuous non-transparent portions in the boundaries of respective phase regions of a pseude-random phase plate.
CONSTITUTION: Non-transparent portions are formed with squares of Δ3 in length of one side at respective corners of element regions by which the inteference effect of the four regions with themselves contacting at the corners on the image plane is considerably reduced and noise suppression equivalent to that when sampling meshes are used may be performed and yet the areas of the portions shaded by the meshes decrease considerably and therefore the hologram diameters may be maintained at about the same as those when there are no meshes and moire may be suppressed as well.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15399577A JPS5485737A (en) | 1977-12-20 | 1977-12-20 | Diffusion plate device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15399577A JPS5485737A (en) | 1977-12-20 | 1977-12-20 | Diffusion plate device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5485737A true JPS5485737A (en) | 1979-07-07 |
Family
ID=15574605
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15399577A Pending JPS5485737A (en) | 1977-12-20 | 1977-12-20 | Diffusion plate device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5485737A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009048761A (en) * | 2007-08-21 | 2009-03-05 | Thomson Licensing | Phase mask for holographic data storage |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4998645A (en) * | 1973-01-24 | 1974-09-18 | ||
JPS5117662A (en) * | 1974-08-03 | 1976-02-12 | Matsushita Electric Ind Co Ltd | GIJIRANDAMUKAKUSANHOSHIKI |
JPS529452A (en) * | 1975-07-11 | 1977-01-25 | Matsushita Electric Ind Co Ltd | Diffusion plate |
-
1977
- 1977-12-20 JP JP15399577A patent/JPS5485737A/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4998645A (en) * | 1973-01-24 | 1974-09-18 | ||
JPS5117662A (en) * | 1974-08-03 | 1976-02-12 | Matsushita Electric Ind Co Ltd | GIJIRANDAMUKAKUSANHOSHIKI |
JPS529452A (en) * | 1975-07-11 | 1977-01-25 | Matsushita Electric Ind Co Ltd | Diffusion plate |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009048761A (en) * | 2007-08-21 | 2009-03-05 | Thomson Licensing | Phase mask for holographic data storage |
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