JPS5511270A - Ultrasonic light modulator - Google Patents
Ultrasonic light modulatorInfo
- Publication number
- JPS5511270A JPS5511270A JP8550078A JP8550078A JPS5511270A JP S5511270 A JPS5511270 A JP S5511270A JP 8550078 A JP8550078 A JP 8550078A JP 8550078 A JP8550078 A JP 8550078A JP S5511270 A JPS5511270 A JP S5511270A
- Authority
- JP
- Japan
- Prior art keywords
- electrodes
- electro
- acoustic transducer
- light
- diffracted
- 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 increase the modulation speed by shaping the distribution of intensity of diffracted light to the angle of incident light in a rectangular form, by forming the electrodes of electro-acoustic transducer so that the width of electrodes may vary along the light transmission direction.
CONSTITUTION: An electro-acoustic transducer 2 made of piezo-electric crystal plate such as lithium niobate crystal is adhered on an acousto-optical medium 1, and the contour of electrodes 6a to 6c on the upper surface thereof is formed in sinx function. And an electrode 7 on the lower surface is divided and lead wires are connected so that the phase of the voltage applied to the electrode 6b may be inverted with respect to that of the voltage applied to adjoining electrodes 6a to 6c. As a result, the distribution of excitation of sound wave due to the electro-acoustic transducer 2 is formed in sinx/x function, so that the angular characteristic of diffracted light 4 transmitted beneath the central axis of the elctrode pattern and diffracted by sound wave may have a rectangular form. Therefore, by confining the incident light 3, the modulation speed may be accelerated.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8550078A JPS5511270A (en) | 1978-07-12 | 1978-07-12 | Ultrasonic light modulator |
US06/057,150 US4299449A (en) | 1978-07-12 | 1979-07-12 | Acoustooptic modulator |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8550078A JPS5511270A (en) | 1978-07-12 | 1978-07-12 | Ultrasonic light modulator |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5511270A true JPS5511270A (en) | 1980-01-26 |
JPS6210411B2 JPS6210411B2 (en) | 1987-03-06 |
Family
ID=13860646
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8550078A Granted JPS5511270A (en) | 1978-07-12 | 1978-07-12 | Ultrasonic light modulator |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5511270A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61184092A (en) * | 1985-05-29 | 1986-08-16 | Furuno Electric Co Ltd | Transmiting and receiving device |
JPS61222399A (en) * | 1985-03-27 | 1986-10-02 | Furuno Electric Co Ltd | Wave transmitter-receiver |
JPS61243383A (en) * | 1985-04-19 | 1986-10-29 | Furuno Electric Co Ltd | Wave receiver/transmitter |
JPS61274497A (en) * | 1985-05-29 | 1986-12-04 | Furuno Electric Co Ltd | Sound wave transmitter-receiver |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5047642A (en) * | 1973-08-22 | 1975-04-28 | ||
JPS51136431A (en) * | 1975-05-21 | 1976-11-25 | Hagiwara Denki Kk | Diferacted electric sound transducer |
-
1978
- 1978-07-12 JP JP8550078A patent/JPS5511270A/en active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5047642A (en) * | 1973-08-22 | 1975-04-28 | ||
JPS51136431A (en) * | 1975-05-21 | 1976-11-25 | Hagiwara Denki Kk | Diferacted electric sound transducer |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61222399A (en) * | 1985-03-27 | 1986-10-02 | Furuno Electric Co Ltd | Wave transmitter-receiver |
JPS61243383A (en) * | 1985-04-19 | 1986-10-29 | Furuno Electric Co Ltd | Wave receiver/transmitter |
JPH0412828B2 (en) * | 1985-04-19 | 1992-03-05 | Furuno Electric Co | |
JPS61184092A (en) * | 1985-05-29 | 1986-08-16 | Furuno Electric Co Ltd | Transmiting and receiving device |
JPS61274497A (en) * | 1985-05-29 | 1986-12-04 | Furuno Electric Co Ltd | Sound wave transmitter-receiver |
JPH0426278B2 (en) * | 1985-05-29 | 1992-05-06 | Furuno Electric Co |
Also Published As
Publication number | Publication date |
---|---|
JPS6210411B2 (en) | 1987-03-06 |
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