JPS5672419A - Polarization controller - Google Patents
Polarization controllerInfo
- Publication number
- JPS5672419A JPS5672419A JP15041779A JP15041779A JPS5672419A JP S5672419 A JPS5672419 A JP S5672419A JP 15041779 A JP15041779 A JP 15041779A JP 15041779 A JP15041779 A JP 15041779A JP S5672419 A JPS5672419 A JP S5672419A
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- voltage
- polarization
- frequency
- polarizing plate
- 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
- Liquid Crystal (AREA)
Abstract
PURPOSE: To generate two linear polarized lights differing in polarization surfaces by using one linear polarizing plate provided at the incident side of light together with a twisted nematic liquid crystal cell and by applying an alternate low-frequency voltage and high-frequency voltage between the opposite electrodes.
CONSTITUTION: Between two glass plates 1 equipped with transparent electrodes 2, nematic liquid crystal changing in the sign of dielectric anisotropy according to the frequency of an applied voltage is injected and slanting angle (α) from the substrate surface of liquid crystal molecule 5 should be between 2 and 50°. As a voltage of a low frequency is applied with switch S, light passed through linear polarizing plate 4 passes through the liquid crystal layer without turning the polarization surface, so that linear polarized light parallel to the paper surface can be obtained. When a high-frequency voltage is applied with switch S, on the other hand, the light passed through linear polarizing plate 4 outputted with its polarization surface turned by 90° by the liquid crystal layer. Namely, the linear polarized light having the polarization surface perpendicular to the paper surface can be obtained.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15041779A JPS5672419A (en) | 1979-11-19 | 1979-11-19 | Polarization controller |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15041779A JPS5672419A (en) | 1979-11-19 | 1979-11-19 | Polarization controller |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5672419A true JPS5672419A (en) | 1981-06-16 |
Family
ID=15496478
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15041779A Pending JPS5672419A (en) | 1979-11-19 | 1979-11-19 | Polarization controller |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5672419A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7460091B2 (en) | 2003-09-24 | 2008-12-02 | Seiko Epson Corporation | Display apparatus and electronic apparatus |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5083052A (en) * | 1973-06-09 | 1975-07-04 | ||
JPS50104043A (en) * | 1974-01-11 | 1975-08-16 | ||
JPS5270854A (en) * | 1975-12-10 | 1977-06-13 | Seiko Epson Corp | Liquid crystal indication device |
-
1979
- 1979-11-19 JP JP15041779A patent/JPS5672419A/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5083052A (en) * | 1973-06-09 | 1975-07-04 | ||
JPS50104043A (en) * | 1974-01-11 | 1975-08-16 | ||
JPS5270854A (en) * | 1975-12-10 | 1977-06-13 | Seiko Epson Corp | Liquid crystal indication device |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7460091B2 (en) | 2003-09-24 | 2008-12-02 | Seiko Epson Corporation | Display apparatus and electronic apparatus |
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