JPS554017A - Photo switch - Google Patents
Photo switchInfo
- Publication number
- JPS554017A JPS554017A JP7602378A JP7602378A JPS554017A JP S554017 A JPS554017 A JP S554017A JP 7602378 A JP7602378 A JP 7602378A JP 7602378 A JP7602378 A JP 7602378A JP S554017 A JPS554017 A JP S554017A
- Authority
- JP
- Japan
- Prior art keywords
- light
- information
- modulator
- filter
- polarized state
- 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.)
- Granted
Links
Abstract
PURPOSE: To protect information and control signals from the effect of electrode induction by controlling the operation of a photo switch by the light of the wavelength differing from the wavelength of the light signal having been modulated by information.
CONSTITUTION: Unless there is applied voltage from an FF5 to a light modulator 1 when the information light 10 having been obtained through direct modulation of a semiconductor laser enters in the polarized state parallel to the plane of the figure, it advances straight in crystal 2 and transmits through a filter 3, thus becoming exit light 11. Next, when control light 20 is entered, it is reflected by the filter 3 and operates the FF5 via photoelectric transducer 4, thereby applying the voltage to the modulator 1. Because of this, the polarized state of the information light 10 out from the modulator 1 becomes perpendicular to the plane of the figure, advances by refracting at the crystal 2 and becomes exit light 12. At this time, the polarized state of the control light 20, eventually the reflected light position in the filter 3, also change but if the element 4 is made sufficiently large in size, it will not adversely affect photoswitching operation at all. In addition, the use of the FF enables the control light to be applied in a pulselike manner.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7602378A JPS554017A (en) | 1978-06-22 | 1978-06-22 | Photo switch |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7602378A JPS554017A (en) | 1978-06-22 | 1978-06-22 | Photo switch |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS554017A true JPS554017A (en) | 1980-01-12 |
JPS6144293B2 JPS6144293B2 (en) | 1986-10-02 |
Family
ID=13593219
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7602378A Granted JPS554017A (en) | 1978-06-22 | 1978-06-22 | Photo switch |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS554017A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57187131A (en) * | 1981-05-13 | 1982-11-17 | Mitsubishi Metal Corp | Formed goods setting material with turntable |
JPS57199533A (en) * | 1981-06-03 | 1982-12-07 | Mitsubishi Metal Corp | Parts loading device of reforming press |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0615029B2 (en) * | 1987-05-26 | 1994-03-02 | 荏原インフイルコ株式会社 | Water collection device in treatment tower |
-
1978
- 1978-06-22 JP JP7602378A patent/JPS554017A/en active Granted
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57187131A (en) * | 1981-05-13 | 1982-11-17 | Mitsubishi Metal Corp | Formed goods setting material with turntable |
JPS57199533A (en) * | 1981-06-03 | 1982-12-07 | Mitsubishi Metal Corp | Parts loading device of reforming press |
Also Published As
Publication number | Publication date |
---|---|
JPS6144293B2 (en) | 1986-10-02 |
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