JPS54155063A - Photo-variable attenuator - Google Patents
Photo-variable attenuatorInfo
- Publication number
- JPS54155063A JPS54155063A JP6325378A JP6325378A JPS54155063A JP S54155063 A JPS54155063 A JP S54155063A JP 6325378 A JP6325378 A JP 6325378A JP 6325378 A JP6325378 A JP 6325378A JP S54155063 A JPS54155063 A JP S54155063A
- Authority
- JP
- Japan
- Prior art keywords
- electrodes
- lights
- liquid crystal
- attenuation
- voltage
- 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 adjust the quantities of lights, which are formed when lights vertically projected to transparent electrodes holding a liquid crystal permeate the liquid crystal, by low drive voltage by stabilizing said quantities of lights, and to miniaturize this device, by adjusting said electrodes by applying voltage to said electrodes.
CONSTITUTION: A liquid crystal 4 is enclosed between transparent electrodes 3, photo-fibers 2 are mounted at right angles to the electrodes 3 and lights are projected. When voltage is not applied to the electrodes 3, the liquid crystal is transparent and the quantity of attenuation is minimum, but the quantity of attenuation increases with the rise of applied voltage. Since there is the correspondence of 1 to 1 between applied voltage and the quantity of attenuation, the quantity of attenuation can be controlled by adjusting applied voltage.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6325378A JPS54155063A (en) | 1978-05-29 | 1978-05-29 | Photo-variable attenuator |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6325378A JPS54155063A (en) | 1978-05-29 | 1978-05-29 | Photo-variable attenuator |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54155063A true JPS54155063A (en) | 1979-12-06 |
Family
ID=13223896
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6325378A Pending JPS54155063A (en) | 1978-05-29 | 1978-05-29 | Photo-variable attenuator |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54155063A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58192017A (en) * | 1982-05-06 | 1983-11-09 | Nippon Telegr & Teleph Corp <Ntt> | Optical switch |
JPH0564825U (en) * | 1992-02-03 | 1993-08-27 | 株式会社アドバンテスト | Optical sensor with optical chopper |
-
1978
- 1978-05-29 JP JP6325378A patent/JPS54155063A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58192017A (en) * | 1982-05-06 | 1983-11-09 | Nippon Telegr & Teleph Corp <Ntt> | Optical switch |
JPH0564825U (en) * | 1992-02-03 | 1993-08-27 | 株式会社アドバンテスト | Optical sensor with optical chopper |
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