JPS5467444A - Reflecting mirror having variable focal point - Google Patents
Reflecting mirror having variable focal pointInfo
- Publication number
- JPS5467444A JPS5467444A JP13357577A JP13357577A JPS5467444A JP S5467444 A JPS5467444 A JP S5467444A JP 13357577 A JP13357577 A JP 13357577A JP 13357577 A JP13357577 A JP 13357577A JP S5467444 A JPS5467444 A JP S5467444A
- Authority
- JP
- Japan
- Prior art keywords
- electrode
- reflecting mirror
- electret
- layer
- focal point
- 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
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract 1
- 238000010276 construction Methods 0.000 abstract 1
- 229910052802 copper Inorganic materials 0.000 abstract 1
- 239000010949 copper Substances 0.000 abstract 1
- 238000001704 evaporation Methods 0.000 abstract 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 abstract 1
- 229910052737 gold Inorganic materials 0.000 abstract 1
- 239000010931 gold Substances 0.000 abstract 1
- 125000006850 spacer group Chemical group 0.000 abstract 1
Landscapes
- Optical Elements Other Than Lenses (AREA)
- Optical Recording Or Reproduction (AREA)
Abstract
PURPOSE: To provide a small and light reflecting mirror, which has excellent responsibility in high frequency range, by arranging a fixed electrode, which has an electret, and a flexible variable electrode, which has a mirror surface, in a manner to face each other through an air layer.
CONSTITUTION: When an AC voltage is impressed through an air layer constructed of an insulating spacer 13 between a fixed electrode 12, which is composed of a conductive layer 10 and an electret layer 11, and a flexible variable electrode 15 which is prepared to have a mirror surface by evaporating gold or copper, the radius of curvature of the electrode 15 is varied through the layer 11 in high response to the voltage applied in high frequency range. As a result, it is possible to provide a light and small reflecting mirror of variable focal point having an excellent responsibility with the use of such simple construction. Incidentally, similar results can be obtained even if the electret is provided on the variable electrode.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13357577A JPS5467444A (en) | 1977-11-09 | 1977-11-09 | Reflecting mirror having variable focal point |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13357577A JPS5467444A (en) | 1977-11-09 | 1977-11-09 | Reflecting mirror having variable focal point |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5467444A true JPS5467444A (en) | 1979-05-30 |
Family
ID=15108008
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13357577A Pending JPS5467444A (en) | 1977-11-09 | 1977-11-09 | Reflecting mirror having variable focal point |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5467444A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013073207A1 (en) * | 2011-11-15 | 2013-05-23 | オムロン株式会社 | Surface potential sensor and copying machine |
-
1977
- 1977-11-09 JP JP13357577A patent/JPS5467444A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013073207A1 (en) * | 2011-11-15 | 2013-05-23 | オムロン株式会社 | Surface potential sensor and copying machine |
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